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Worksheets

Biology

Total questions: 216

Worksheet time: 3hrs 38mins

Name
Class
Date
1.

In amoeba food is digested in

a)

food vacuole

b)

mitochondria

c)

psuedoodia

d)

chloroplast

2.

The breakdown of pyruvate to give carbon dioxide water and energy takes place in

a)

Cytoplasm

b)

Mitochondria

c)

chloroplast

d)

Nucleus

3.

Saliva contains an enzyme for digestion of starch

a)

Amylase

b)

Lipase

c)

Trypsin

d)

Glycerol

4.

What protects the inner lining of stomach from hydrochloric acid

a)

Carbon dioxide

b)

Protein

c)

Mucus

d)

Fat layer

5.

Which one is the structural and functional unit of kidney

a)

Nexon

b)

Nephron

c)

Ureter

d)

Urethra

6.

In this type of nutrition solid and complex organic food is directly taken into the body

a)

Saprophytic nutrition

b)

Parasitic nutrition

c)

Holozoic nutrition

d)

None of the above

7.

What is correct about bile juice in human digestion

a)

Bile does not contain any enzyme

b)

Bile is alkaline

c)

Bile salt is present which helps to Tu emulsify the fat

d)

All of the above

8.

Pulmonary veins contain

a)

Oxygenated blood

b)

Deoxygenated blood

c)

Both oxygenated and deoxygenated blood

d)

All of the above

9.

Why do the walls of trachea not collapse when there is less air in it?

a)

Supported by rings of cartilage

b)

Supported by Rib cage

c)

No air is left the question is wrong

d)

Because of strong muscles

10.

Why does lack of oxygen in muscles often lead to cramps among cricketers?

a)

Formation of lactic acid during lack of oxygen

b)

Conversion of pyruvate to ethanol and CO2 in absence of oxygen

c)

Due to formation of CO2 and H2O in mitochondria

d)

None of the above

11.
Functional units of food absorption are-
a)
VILLI
b)
STOMACH
c)
LIVER
d)
FOOD PIPE
12.
The trachea divides into two smaller tubes called ______.
a)
Trachea
b)
Bronchi
c)
Alveoli
d)
Bronchioles
13.
Storage form of glucose molecules (C6H12O6) in plant is-
a)
 Starch
b)
Cellulose
c)
Glycogen
d)
Glucagon
14.
Which of the following is a product of fermentation?
a)
Methanol
b)
Oxygen
c)
Ethanol
d)
Lactic acid
15.

Plants and  animals releases carbon dioxide as a form of ...

a)

Respiration

b)

Excretion

c)

Nutrition

d)

Reproduction

16.

The _____ contains the energy that is released in the respiration process.

a)

oxygen

b)

fructose

c)

glucose

d)

carbon dioxide

17.

Write the water soluble form of proteins.

a)

Glucose

b)

Amino acids

c)

Glycerol

d)

Pyruvate

18.

The blood leaving the tissues becomes richer in

a)

Carbon dioxide

b)

Water

c)

Heamoglobin

d)

Oxygen

19.
What are the products of anaerobic respiration?
a)
Glucose and oxygen
b)
Carbon dioxide and water
c)
Lactic acid
d)
Carbon monoxide
20.
What is cellular respiration?
a)
the breakdown of glucose  to release ATP
b)
the breakdown of glucose to release NADH
c)
the breakdown of glucose to release FADH
d)
the breakdown of glucose to release carbon
21.

Which of the following structure is where cellular respiration occurs in the cell?

a)

nucleus

b)

cytoplasm

c)

mitochondria

d)

vacuoles

22.

In which mode of nutrition an organism de-rives its food from the body of another living organism without killing it?

a)

Saprotrophic

b)

Parasitic

c)

Holozoic

d)

Autotrophic

23.

Roots of the plants absorb water from the soil through the process of:

a)

Diffusion

b)

Transpiration

c)

Osmosis

d)

None of these

24.

The site of photosynthesis in the cells of a leaf is

a)

Chloroplast

b)

Mitochondria

c)

Cytoplasm

d)

Protoplasm

25.

Which region of the alimentary canal absorbs the digested food?

a)

Liver

b)

Small Intestine

c)

Large Intestine

d)

Stomach

26.

Which of the following is not a digestive enzyme contained in the pancreatic juice?


i. Lipase


ii. Hydrochloric acid


iii. Mucus


iv. Trypsin

a)

i and iv

b)

i and ii

c)

ii and iii

d)

i and iii

27.

The excretory unit of the human excretory system is known as:

a)

Nephron

b)

Nephridia

c)

Neurons

d)

Kidney

28.

Which one of the following has a smaller intestine

a)

Carnivores

b)

Herbivores

c)

Both (a) and (b)

d)

None of the above

29.

Name the tube which connects the kidneys to the urinary bladder

a)

Urethra

b)

Nephron

c)

Oesophagus

d)

Ureters

30.

The procedure used for cleaning the blood of a person by separating urea from it is called:

a)

Osmosis

b)

Dialysis

c)

Filtration

d)

Diffusion

31.

Name a circulatory fluid in the human body other than blood.

a)

Platelets

b)

RBCs

c)

Lymph

d)

Plasma

32.

Gland not associated with the alimentary canal is

a)

Liver

b)

salivary gland

c)

Pancreas

d)

Adrenal

33.

Normal blood pressure (systolic/diastolic) is

a)

120 / 80 mm of HG

b)

60/80 mm of HG

c)

120/60 mm of HG

d)

180 / 80 mm of HG

34.

Which of the following is not correct

a)

Deoxygenated blood is poured into right Atrium of heart

b)

The excretory unit of flatworm are flame cells

c)

Human kidney has about 1 million nephridia

d)

Trachids and vessels are non living conducting tissue

35.

(a)   a long thin spindle-shaped cells with pits in the thick cell wall

36.

The expansion of an artery each time the blood is forced into it is called

(a)  

37.

Gums and resins are the (a)   products of plants

38.

Glamorous act as a dialysis bag

a)

True

b)

False

39.

Moment of muscles are kar in mouth to push food into alimentary canal

a)

True

b)

False

40.

Carbohydrates are the compounds of our food which is digested by enzyme which is present in saliva as well as in pancreatic juice

a)

True

b)

False

41.

Mention how organisms like bread mould and mushrooms obtain their food

4 lines
42.
A cell's control center that directs all of the activities that take place in the cell is the
a)
Chromosome
b)
Vacuole
c)
Nucleus
d)
Mitochondria
43.
Found only in plant cells, this organelle enables the plant to make its own food through the process of photosynthesis.
a)
Cytoplasm
b)
Cell Wall
c)
Chloroplast
d)
Mitochondria
44.

Full form of ATP

a)

Adenosinetriphosphate

b)

Adenosidiphosphate

c)

Adrenalin

d)

Adoxide

45.

The blood vessels which carry oxygenated blood

a)

Vein

b)

Artery

c)

Both

d)

None

46.
What is the name of the "plant food" produced by photosynthesis?
a)
glucose
b)
carbohydrates
c)
chloroplast
d)
lunch
47.
What gas does a plant take IN for photosynthesis
a)
oxygen
b)
nitrogen
c)
carbon dioxide
d)
helium
48.
 What is the main function or job of the organ system displayed?
a)
To store food until it is absorbed into the lungs
b)
To convert and breakdown food into nutrients and energy to be absorbed into the circulatory system
c)
To provide the body with structure
d)
TO eliminate liquid waste
49.
Which organ pumps blood throughout your body?
a)
cell
b)
brain
c)
tissue
d)
heart
50.

The valve present between right atrium and right ventricle.

a)

tricuspid

b)

bicuspid

c)

pulmonary

d)

aortic

51.

It is the site of gaseous exchange in human lungs.

a)

villi

b)

alveoli

c)

trachea

d)

larynx

52.

In unicellular organisms like amoeba gaseous exchange takes place through the process of ____________.

a)

osmosis

b)

transportation

c)

diffusion

d)

elimination

53.

The substance in plants and animals that act as an energy currency.

a)

DNA

b)

RNA

c)

ADP

d)

ATP

54.

_______________ is the final product of glycolysis.

a)

carbon dioxide

b)

ATP

c)

Pyruvic acid

d)

acetyl coA

55.

Glycolysis takes place in the __________ of the cell.

a)

mitochondria

b)

ribosomes

c)

cytoplasm

d)

Golgi complex

56.

_________________ artery carries deoxygenated blood.

a)

aortic

b)

pulmonary

c)

renal

d)

inferior

57.

chloroplasts are present in the ___________ of the leaf.

a)

palisade parenchyma

b)

aerenchyma

c)

sclrenchyma

d)

collenchyma

58.

in plants food is stored i the form of

a)

glycogen

b)

starch

c)

maltose

d)

glucose

59.

The waste product generated during photosynthesis is

a)

carbon dioxide

b)

oxygen

c)

nitrogen

d)

water

60.

In plants waste products are stored as ------ and --------

a)

water and glucose

b)

glycogen and starch

c)

resins and gums

d)

starch and water

61.

The autotrophic mode of nutrition requires

a)

Carbon dioxide and water

b)

Sunlight

c)

Chlorophyll

d)

All of the above

62.

The breakdown of pyruvate to give carbon dioxide water and energy takes place in

a)

Cytoplasm

b)

Mitochondria

c)

chloroplast

d)

Nucleus

63.

Saliva contains an enzyme for digestion of starch

a)

Amylase

b)

Lipase

c)

Trypsin

d)

Glycerol

64.

Energy transformation that takes place in the process of photosynthesis

a)

Solar to chemical

b)

Solar to electrical

c)

Solar to mechanical

d)

Nanak Dev

65.

Give an example of an organism whose digestion is intracellular

a)

Plant

b)

Amoeba

c)

Tiger

d)

Insect

66.

Which is the largest gland in human body

a)

Pancreas

b)

Liver

c)

Adrenal

d)

Pituitary

67.

What protects the inner lining of stomach from hydrochloric acid

a)

Carbon dioxide

b)

Protein

c)

Mucus

d)

Fat layer

68.

The maintenance of optimum concentration of water and salts in the body fluids

a)

Ingestion

b)

Respiration

c)

Excretion

d)

Osmoregulation

69.

Which one is the structural and functional unit of kidney

a)

Nexon

b)

Nephron

c)

Ureter

d)

Urethra

70.

In this type of nutrition solid and complex organic food is directly taken into the body

a)

Saprophytic nutrition

b)

Parasitic nutrition

c)

Holozoic nutrition

d)

None of the above

71.

What is correct about bile juice in human digestion

a)

Bile does not contain any enzyme

b)

Bile is alkaline

c)

Bile salt is present which helps to Tu emulsify the fat

d)

All of the above

72.

Which one is correct about artery

a)

Thin walled

b)

carries blood to from the Heart to other parts of the body

c)

Situated just under the skin

d)

None of the above

73.

Pulmonary veins contain

a)

Oxygenated blood

b)

Deoxygenated blood

c)

Both oxygenated and deoxygenated blood

d)

All of the above

74.

Why do the walls of trachea not collapse when there is less air in it?

a)

Supported by rings of cartilage

b)

Supported by Rib cage

c)

No air is left the question is wrong

d)

Because of strong muscles

75.

Why does lack of oxygen in muscles often lead to cramps among cricketers?

a)

Formation of lactic acid during lack of oxygen

b)

Conversion of pyruvate to ethanol and CO2 in absence of oxygen

c)

Due to formation of CO2 and H2O in mitochondria

d)

None of the above

76.

Name the type of blood vessels,which carry blood from organs to the heart.

a)

artery

b)

veins

c)

capillaries

77.

Which enzyme is present in human saliva?

a)

Salivary tripsin

b)

Salivary amylase

c)

Salivary lipase

78.

Which is the stored form of carbohydrates in plants and animals respectively?

a)

starch and glycogen

b)

starch and glucose

c)

starch and maltose

79.

what are the end products of photosynthesis?

a)

oxygen,carbondioxide and water

b)

oxygen ,glucose and water

c)

oxygen and water

80.

vocal cords occur in:

a)

pharynx

b)

larynx

c)

glottis

d)

bronchial tube

81.

what is the mode of nutrition in fungi?

a)

autotropic

b)

heterotropic

c)

saprophytic

d)

parasitic

82.

How many pairs of salivary glands are found in humans?

a)

4

b)

2

c)

6

d)

3

83.

Blood vessel carry blood from lungs to heart through:

a)

pulmonary artery

b)

pulmonary vein

84.

Which of the following structures is involved in gaseous exchange in woody stem of a plant?

a)

stomata

b)

guard cell

c)

lenticel

d)

epidermis

85.

villi present on the internal wall of intestine help in the

a)

emulsification of fats

b)

breakdown of protein

c)

absorption of digested food

d)

digestion of carbohydrates

86.

correct route of blood flow in a human

a)

Left atrium-->Left Ventricle-->Lungs-->Right Ventricle-->Right Atrium

b)

Left atrium-->Left Ventricle-->Right Ventricle-->Right Atrium ----->Lungs

c)

Right Atrium-->Right Ventricle-->Left Ventricle -->Left atrium-->

Lungs

d)

Right Atrium-->Right Ventricle-->Lungs -->Left atrium-->Left Ventricle

87.

The site of exchange of wastes,nutrients,gases and hormones between the blood and body cell are the :

a)

arteries

b)

arterioles

c)

capillaries

d)

veins

88.

Which one indicates hypertension or high blood pressure

a)

120/80

b)

130/80

c)

110/70

d)

140/90

89.

veins can be differentiated from arteries because the veins:

a)

have valves

b)

have hard walls

c)

have pure blood in them

d)

have thick walls

90.

The breakdown of pyruvate to give carbondioxide ,water and energy takes place in:

a)

cytoplasm

b)

mitochondria

c)

chloroplast

d)

nucleus

91.

Digestion of starch starts from:

a)

stomach

b)

intestine

c)

oesophagus

d)

mouth

92.

Man is (a)   in nutrition.

93.

Blood circulation in human is called (a)   circulation

94.

Largest digestive gland in the human body is (a)  

95.

The structural and functional unit of lungs is (a)  

96.

The (a)   prevents the entry of food into the respiratory tract.

97.

Which of the following increases in muscle cell when they are lacking in oxygen?

a)

Carbon dioxide

b)

Lactose

c)

Lactic acid

d)

Uric acid

98.

In cockroaches, air enters the body through:

a)

Lungs

b)

Gills

c)

Spiracles

d)

Skin

99.

One of the following does not have a nucleus. This one is:

a)

Red blood cell

b)

White blood cell

c)

Guard cell

d)

Epidermal cell

100.

The blood leaving the tissue s becomes richer in:

a)

Carbon dioxide

b)

Water

c)

Heamoglobin

d)

Oxygen

101.

Blood is pumped from the heart to the entire body by the :

a)

Lungs

b)

Ventricles

c)

Atria

d)

Nerves

102.

Which vein brings clean blood from the lungs into the heart ?

a)

Renal vein

b)

Pulmonary vein

c)

Vena cava

d)

Hepatic vein

103.

Which blood vessels doesn't carry any carbon dioxide ?

a)

Pulmonary artery

b)

Vena cava

c)

Hepatic vein

d)

Pulmonary vein

104.

The phloem tissue in plants is responsible for the transport of :

a)

Water

b)

Water and minerals

c)

Sugar

d)

All of the above

105.

Which of the following has a three chambered heart ?

a)

Pigeon

b)

Lizard

c)

Fish

d)

Lion

106.

The excretory unit in the human excretory system is called :

a)

Nephron

b)

Neuron

c)

Nephridia

d)

Kidneys

107.

The cell in our blood which destroy disease causing germs, are:

a)

Platelets

b)

Skin cells

c)

RBCs

d)

WBCs

108.

The procedure of cleaning the blood of a person by using a kidney machine is known as :

a)

Ketolysis

b)

Hydrolysis

c)

Dialysis

d)

Photolysis

109.

Gums and resins are the products of plants.

(a)  

110.

One cell-thick vessels are called

I.

a)

Arteries

b)

Veins

c)

Capillaries

111.

Blood consist of what fluid medium?

a)

Lymph

b)

Platelets

c)

Plasma

112.

What does the left side of the heart do?

a)

The left side of the heart pumps blood through the lungs where it gets oxygen. SHOW ANSWER

b)

The left side of the heart receives the blood containing oxygen and pumps blood to the rest of the body.

c)

The left side of the heart controls the muscles on the left side of the body,

d)

The left side of the heart supplys our arms with blood

113.

A flap of tissue that prevents blood from flowing backward

a)

Aorta

b)

Atrium

c)

Septum

d)

Valve

114.

_____________________ is the force of blood on the walls of the blood vessels.

a)

Pulse

b)

Heart rate

c)

Blood Pressure

d)

Hypertension

115.

Respiratory pigment in human body is

I.

a)

Chlorophyll

b)

Water

c)

Blood

d)

haemoglobin

116.

In which part of the heart does the aorta originate?

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

117.

What are released from white blood cells in order to protect the body from pathogens?

a)

Clots

b)

Antibodies

c)

Antidotes

d)

Antigens

118.

How many circuits are there in human circulatory system?

a)

1

b)

2

c)

3

d)

4

119.

Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:

a)

Hydrochloric acid

b)

Acetic acid

c)

Lactic acid

120.

The only artery which carries deoxygenated blood is:

a.

a)

Pulmonary artery

b)

Hepatic artery

c)

Coronary artery

121.

What is the word equation for aerobic respiration in plants?

a)

carbon dioxide + water → glucose + oxygen

b)

glucose + carbon dioxide → water + oxygen

c)

glucose + oxygen → carbon dioxide + water

122.

During aerobic respiration glucose is broken down. What is released in this process?

a)

A

b)

B

c)

C

d)

D

123.

The list shows four metabolic processes.

Which of these processes occur in muscles?

a)

A 1 and 2

b)

B 2 and 3

c)

C 3 and 4

d)

D 4 and 1

124.

In humans, right auricle receives______blood from______

a)

Oxygenated, aorta

b)

Deoxygenated, vena cava

c)

Oxygenated, vena cava

d)

Deoxygenated, aorta

125.

If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?

a)

Proteins breaking down into amino acids

b)

Starch breaking down into sugars

c)

Fats breaking down into fatty acids and glycerol

d)

Absorption of vitamins

126.

A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains

a)

complex proteins

b)

simple proteins

c)

fats

d)

starch

127.

In which part of the alimentary canal food is finally digested?

a)

Stomach

b)

Mouth cavity

c)

Large intestine

d)

Small intestine

128.

Choose the function of the pancreatic juice from the following

a)

trypsin digests proteins and lipase carbohydrates

b)

trypsin digests emulsified fats and lipase proteins

c)

trypsin and lipase digest fats

d)

trypsin digests proteins and lipase emulsified fats

129.

During respiration exchange of gases take place in

a)

trachea and larynx

b)

alveoli of lungs

c)

alveoli and throat

d)

throat and larynx

130.

Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by

a)

Labeo, Chameleon, Salamander

b)

Hippocampus, Exocoetus, Anabas

c)

Hyla, Rana, Draco

d)

Whale, Dolphin, Turtle

131.

The blood leaving the tissues becomes richer in

a)

carbon dioxide

b)

water

c)

heamoglobin

d)

oxygen

132.

Which of the following is an incorrect statement?

a)

Organisms grow with time

b)

Organisms must repair and maintain their structure

c)

Movement of molecules does not take place among cells

d)

Energy is essential for life processes

133.

The opening and closing of the stomatal pore depends upon

a)

oxygen

b)

temperature

c)

water in guard cells

d)

concentration of CO2 in stomata

134.

Select the correct statement

a)

Heterotrophs do not synthesise their own food

b)

Heterotrophs utilise solar energy for photosynthesis

c)

Heterotrophs synthesise their own food

d)

Heterotrophs are capable of converting carbon dioxide and

water into carbohydrates

135.

Observe the diagram and choose the option that indicate correct labeling -A,B,C,D and E

a)

A- Pulmonary artery, B- Vein, C- , D- Aorta, E- Right atrium.

b)

A- Left ventricle, B- Pulmonary artery, C- Aorta, D- Right atrium, E- Vein

c)

A-Aorta, B- Pulmonary artery, C- Right atrium, D- Left ventricle, E- Vein

d)

A- Aorta, B- Vein, C- Left ventricle, D- Right atrium, E- Pulmonary artery.

136.
 What is the main function or job of the organ system displayed?
a)
To store food until it is absorbed into the lungs
b)
To convert and breakdown food into nutrients and energy to be absorbed into the circulatory system
c)
To provide the body with structure
d)
TO eliminate liquid waste
137.

The valve present between right atrium and right ventricle.

a)

tricuspid

b)

bicuspid

c)

pulmonary

d)

aortic

138.

It is the site of gaseous exchange in human lungs.

a)

villi

b)

alveoli

c)

trachea

d)

larynx

139.

In unicellular organisms like amoeba gaseous exchange takes place through the process of ____________.

a)

osmosis

b)

transportation

c)

diffusion

d)

elimination

140.

The substance in plants and animals that act as an energy currency.

a)

DNA

b)

RNA

c)

ADP

d)

ATP

141.

_______________ is the final product of glycolysis.

a)

carbon dioxide

b)

ATP

c)

Pyruvic acid

d)

acetyl coA

142.

Glycolysis takes place in the __________ of the cell.

a)

mitochondria

b)

ribosomes

c)

cytoplasm

d)

Golgi complex

143.

_________________ artery carries deoxygenated blood.

a)

aortic

b)

pulmonary

c)

renal

d)

inferior

144.

chloroplasts are present in the ___________ of the leaf.

a)

palisade parenchyma

b)

aerenchyma

c)

sclrenchyma

d)

collenchyma

145.

The breakdown of pyruvate to give carbon dioxide water and energy takes place in

a)

Cytoplasm

b)

Mitochondria

c)

chloroplast

d)

Nucleus

146.

Energy transformation that takes place in the process of photosynthesis

a)

Solar to chemical

b)

Solar to electrical

c)

Solar to mechanical

d)

Nanak Dev

147.

Which is the largest gland in human body

a)

Pancreas

b)

Liver

c)

Adrenal

d)

Pituitary

148.

What protects the inner lining of stomach from hydrochloric acid

a)

Carbon dioxide

b)

Protein

c)

Mucus

d)

Fat layer

149.

Which one is the structural and functional unit of kidney

a)

Nexon

b)

Nephron

c)

Ureter

d)

Urethra

150.

In this type of nutrition solid and complex organic food is directly taken into the body

a)

Saprophytic nutrition

b)

Parasitic nutrition

c)

Holozoic nutrition

d)

None of the above

151.

What is correct about bile juice in human digestion

a)

Bile does not contain any enzyme

b)

Bile is alkaline

c)

Bile salt is present which helps to Tu emulsify the fat

d)

All of the above

152.

Which one is correct about artery

a)

Thin walled

b)

carries blood to from the Heart to other parts of the body

c)

Situated just under the skin

d)

None of the above

153.

Pulmonary veins contain

a)

Oxygenated blood

b)

Deoxygenated blood

c)

Both oxygenated and deoxygenated blood

d)

All of the above

154.

Why do the walls of trachea not collapse when there is less air in it?

a)

Supported by rings of cartilage

b)

Supported by Rib cage

c)

No air is left the question is wrong

d)

Because of strong muscles

155.

Why does lack of oxygen in muscles often lead to cramps among cricketers?

a)

Formation of lactic acid during lack of oxygen

b)

Conversion of pyruvate to ethanol and CO2 in absence of oxygen

c)

Due to formation of CO2 and H2O in mitochondria

d)

None of the above

156.

Choose The Function Of The Pancreatic Juice From The Following

a)

Trypsin digests proteins and lipase carbohydrates

b)

Trypsin digests emulsified fats and lipase proteins

c)

Trypsin and lipase digest fats

d)

Trypsin digests proteins and lipase emulsified fats

157.

When Air Is Blown From Mouth Into A Test-Tube Containing Lime Water, The Lime Water Turned Milky Due To The Presence Of

a)

Carbon dioxide

b)

Oxygen

c)

Nitrogen

d)

Water vapour

158.

The process of obtaining food to meet the energy demands of the body is known as _____.

a)

Excretion

b)

Respiration

c)

Nutrition

d)

Circulation

159.

An enzyme 'X' that converts starch to simple sugars is also the first enzyme to mix with food in the digestive tract. Identify 'X'

a)

Pepsin

b)

Amylase

c)

Lipase

d)

None of these

160.

Gland not associated with the alimentary canal is

a)

Liver

b)

salivary gland

c)

Pancreas

d)

Adrenal

161.

Respiratory pigment in human body is

I.

a)

Chlorophyll

b)

Water

c)

Blood

d)

haemoglobin

162.

How many circuits are there in human circulatory system?

a)

1

b)

2

c)

3

d)

4

163.

What is the word equation for aerobic respiration?

a)

carbon dioxide + water → glucose + oxygen

b)

glucose + carbon dioxide → water + oxygen

c)

glucose + oxygen → carbon dioxide + water

164.

The stomach produces acidic hydrochloric acid. Why

a)

Starch is broken down to simple glucose by it.

b)

To neutralise bases present in food.

c)

Pepsin needs an acidic medium to work upon proteins.

d)

None

165.

What is the mode of nutrition in bacteria?

a)

heterotrophic

b)

autotrophic

c)

autotrophic and heterotrophic

d)

none of the above

166.

The breakdown of pyruvate to give carbon dioxide water and energy takes place in

a)

Cytoplasm

b)

Mitochondria

c)

chloroplast

d)

Nucleus

167.

Saliva contains an enzyme for digestion of starch

a)

Amylase

b)

Lipase

c)

Trypsin

d)

Glycerol

168.

Energy transformation that takes place in the process of photosynthesis

a)

Solar to chemical

b)

Solar to electrical

c)

Solar to mechanical

d)

Nanak Dev

169.

Which is the largest gland in human body

a)

Pancreas

b)

Liver

c)

Adrenal

d)

Pituitary

170.

What protects the inner lining of stomach from hydrochloric acid

a)

Carbon dioxide

b)

Protein

c)

Mucus

d)

Fat layer

171.

Which one is the structural and functional unit of kidney

a)

Nexon

b)

Nephron

c)

Ureter

d)

Urethra

172.

What is correct about bile juice in human digestion

a)

Bile does not contain any enzyme

b)

Bile is alkaline

c)

Bile salt is present which helps to Tu emulsify the fat

d)

All of the above

173.

Which one is correct about artery

a)

Thin walled

b)

carries blood to from the Heart to other parts of the body

c)

Situated just under the skin

d)

None of the above

174.

Pulmonary veins contain

a)

Oxygenated blood

b)

Deoxygenated blood

c)

Both oxygenated and deoxygenated blood

d)

All of the above

175.

Why do the walls of trachea not collapse when there is less air in it?

a)

Supported by rings of cartilage

b)

Supported by Rib cage

c)

No air is left the question is wrong

d)

Because of strong muscles

176.

Why does lack of oxygen in muscles often lead to cramps among cricketers?

a)

Formation of lactic acid during lack of oxygen

b)

Conversion of pyruvate to ethanol and CO2 in absence of oxygen

c)

Due to formation of CO2 and H2O in mitochondria

d)

None of the above

177.

Why does lack of oxygen in muscles often lead to cramps among cricketers?

a)

Formation of lactic acid during lack of oxygen

b)

Conversion of pyruvate to ethanol and CO2 in absence of oxygen

c)

Due to formation of CO2 and H2O in mitochondria

d)

None of the above

178.

The first enzyme toomics with food in the digestive system

a)

Trypsin

b)

Pepsin

c)

Salivary amylase

d)

Pancreatic amylase

179.

Energy stored in autotrophs in the form of

a)

Fat

b)

Starch

c)

Protein

d)

Glucose

180.

The enzyme present in infants but absent in adults

a)

Trypsin

b)

Chymotrypsinogen

c)

Renin

d)

Pepsin

181.

Oxygen carries to the tissue in the form of

a)

Carboxyhemoglobin

b)

Oxyhaemoglobin

c)

Carbaminohemoglobin

d)

Carbon monoxide

182.

Which part of nephron water is reabsorbed

a)

Henle loop

b)

Proximal convoluted tubule

c)

Vasa recta

d)

Glomerulus

183.

The cause of muscles cramp

a)

Acetic acid

b)

Lactic acid

c)

Hydrochloric acid

d)

Benzoic acid

184.

The excretory organ in earthworm

a)

Kidney

b)

Nephridia

c)

Malpighian tubules

d)

Flame cells

185.

Bile juice stored in

a)

Liver

b)

Pancreas

c)

Gall bladder

d)

Small Intestine

186.
What is the study of living organisms known as?
a)
Biology
b)
Anatomy
c)
Zoology
d)
Chemistry
187.
Which of the following is an example of a living organism?
a)
A rock
b)
A tree
c)
A river
d)
A cloud
188.
What is the smallest unit of life known as?
a)
Cell
b)
Organ
c)
Tissue
d)
Virus
189.
What branch of biology deals with the study of plants?
a)
Botany
b)
Entomology
c)
Morphology
d)
Ichthyology
190.
What is the study of animal behavior known as?
a)
Neurobiology
b)
Ecology
c)
Ethology
d)
Physiology
191.
What is the study of heredity and variation of traits in organisms known as?
a)
Geology
b)
Genetics
c)
Evolution
d)
Cytology
192.
What is the study of the physical structure of organisms known as?
a)
Anatomy
b)
Biochemistry
c)
Phylogeny
d)
Microbiology
193.
What is the process of species adapting to their environment over many generations known as?
a)
Classification
b)
Natural selection
c)
Speciation
d)
Hybridization
194.
What is the study of ecosystems, including their physical and chemical components, as well as the organisms within them known as?
a)
Physiology
b)
Anatomy
c)
Ecology
d)
Taxonomy
195.
What is the study of diseases caused by microorganisms known as?
a)
Immunology
b)
Pathology
c)
Bacteriology
d)
Virology
196.

ATP stands for

(a)  

197.

Foods synthesized in the process of Photosynthesis by plants is stored as

a)

Starch

b)

Protein

c)

Vitamins

d)

Fats

198.

Where in a plant cell does photosynthesis take place

a)

Palisade cells

b)

Chlorophyll

c)

Chloroplasts

d)

Vacuole

199.

What is the purpose of photosynthesis?

a)

To release energy

b)

To create glucose

c)

To grow

d)

To get oxygen for respiration

200.

Which of these are limiting factors for photosynthesis? Choose 3 answers.

a)

Light intensity

b)

CO2 concentration

c)

Temperature

d)

Light

e)

CO2 levels

201.

Which of these is the correct equation for photosynthesis?

a)

6O2 + C6H12O6 --> 6CO2 + 6H2O

b)

6O2 + 6CO2 --> C6H12O6 + 6H2O

c)

6CO2 + 12H2O --> C6H12O6 + 6H2O + 6O2

d)

6CO2 + 6H2O --> O2 + C6H12O6

202.

What are the products of photosynthesis?

a)

Oxygen and Energy

b)

Carbon Dioxide and Glucose

c)

Glucose and Oxygen

d)

Oxygen and Water

203.

What protects Stomata and helps it in opening and closing?

a)

Guard Cells

b)

Leaf

c)

Stem

d)

Carbon Dioxide

204.

Identify what is shown in the picture

a)

chlorophyll

b)

stomata

c)

carbon dioxide

d)

veins

205.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
206.

Energy stored in all the fossils fuels is made during the process of

a)

Fossilization

b)

Oxidation

c)

Photosynthesis

d)

De-starching

207.
Most plants appear green because chlorophyll
a)
absorbs green light.
b)
absorbs violet light.
c)
reflects green light.
d)
does not absorb violet light.
208.
What molecule absorbs sunlight for photosynthesis?
a)
chloroplast
b)
thylakoid
c)
grana
d)
chlorophyll
209.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

210.

The Calvin Cycle occurs in the

a)

Thylakoid

b)

Grana

c)

Inner membrane of chloroplast

d)

Stroma

211.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
212.
What is the main purpose of the light dependent reactions?
a)
To provide the energy for the calvin cycle
b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
213.

What supplies the electrons during photolysis?

a)

oxygen

b)

water

c)

glucose

d)

rubisco

214.

Choose the statement that best describes light reaction.

a)

It converts CO2 to sugar molecule

b)

It converts light energy to chemical energy of ATP and NADPH

c)

It takes place in the stroma

215.

Which of the following is not needed to start the light reaction

a)

H2O

b)

ADP + P

c)

CO2

216.

What is the unit of light?

a)

proton

b)

photon

c)

photosystem

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