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BIOLOGY

Total questions: 75

Worksheet time: 38mins

Name
Class
Date
1.

What is the form of food produced after photosynthesis?

a)

Cellulose

b)

Starch

c)

Glucose

d)

None of these

2.

What is the function of chlorophyll?

a)

Trapping of sunlight

b)

Helpful in Splitting of water

c)

Reduction of Carbon dioxide into Glucose

d)

All of these

3.

Which part of the plants absorb Carbon dioxide?

a)

Root

b)

Stem

c)

Leaf

d)

Stomata

4.

The autotrophic mode of nutrition requires:

a)

Carbon dioxide and water

b)

Chlorophyll

c)

Sunlight

d)

All of the above

5.

Which of the following is an example of autotroph?

a)

Grass

b)

Mushroom

c)

Amoeba

d)

Paramoecium

6.

Entry of which substance in the guard cells open the stomata?

a)

Carbohydrate

b)

Carbon Dioxide

c)

Starch

d)

Water

7.

What inorganic substances are required for autotrophic nutrition

a)

Carbon dioxide, water

b)

Water, sunlight

c)

Carbon dioxide, sunlight

d)

All

8.

Which process is used by plants for converting inorganic to organic substance

a)

Photosynthesis

b)

Transpiration

c)

Translocation

d)

All

9.

Why is sunlight required during photosynthesis

a)

For energy production

b)

For movements

c)

For respiration

d)

For circulation

10.

What is food stored in animals

a)

Glycogen

b)

Starch

c)

Proteins

d)

Oils

11.

How many molecules of carbon dioxide and water are used in photosynthesis

a)

6,12

b)

12,6

c)

6,6

d)

12,12

12.

What are steps of photosynthesis

a)

Chlorophyll Absorbs sunlight

b)

Light energy converted to chemical energy

c)

Water broken into hydrogen and oxygen

d)

Carbon dioxide converted to carbohydrates

e)

All

13.

Chlorophyll is mainly located in which part of the plant

a)

Green leaf

b)

Bark

c)

Stem

d)

Root

14.

chloroplasts are present in the ___________ of the leaf.

a)

palisade parenchyma

b)

aerenchyma

c)

sclrenchyma

d)

collenchyma

15.

Guard cells are usually ___________________

a)

rectangular in shape

b)

pear-shaped

c)

spherical

d)

kidney shaped

16.

How does most of the water needed by the plant get into its leaves?

a)

It enters through the stomata

b)

The roots absorb it and then it travels up the stem

c)

It's made during a chemical reaction in the leaf

d)

The flowers capture water and deliver it to the leaves

17.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

light + carbon dioxide + water --> glucose + oxygen

b)

carbon dioxide + sugar + water --> oxygen + light

c)

oxygen + light + water --> carbon dioxide + sugar

d)

carbon dioxide + oxygen + water --> Light+ Sugar

18.

Which of the following is the correct way of defining the term photosynthesis?

a)

The process in which autotrophs take in carbon dioxide, water and minerals in the presence of sunlight and chlorophyll to synthesize carbohydrates is called photosynthesis

b)

The process in which carbohydrates are utilised to provide energy is called photosynthesis.

c)

The process in which heterotrophs depend on plants for food is called photosynthesis.

19.

Which of the following events do not occur during photosynthesis?

a)

Absorption of light energy by chlorophyll.

b)

Conversion of light energy to chemical energy.

c)

splitting of water into hydrogen and oxygen.

d)

Oxidation of carbohydrates into carbon dioxide and water

e)

Reduction of carbon dioxide to carbohydrates.

20.

The opening and closing of stomata is a function of _____cells.

a)

mesophyll cells

b)

epidermal cells

c)

guard cells

21.

Which of the following statements about the autotrophs is incorrect?

a)

(a) They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll

b)

(b) They store carbohydrates in the form of starch

c)

(c) They convert carbon dioxide and water into carbohydrates in the absence of sunlight

d)

(d) They constitute the first trophic level in food chains

22.

Which of the following are complex organic substances?

a)

water

b)

nitrogen

c)

proteins

23.

What happens to the unused carbohydrates produced in the plant body?

a)

Gets broken down and dissipated as heat.

b)

Transported to stem in the form of glycogen.

c)

Expelled from plant body through excretion.

d)

Stored in the form of starch for future use.

24.

What do you mean by the term nutrition?

a)

The process of consumption and utilization of food by the body of the organism .

b)

The process of removing energy from inside the body of the organism to outside

c)

The process of studying about different kinds of food.

25.

Which organelle is responsible making food (Glucose) using sunlight?

a)

Cell Membrane

b)

Nucleus

c)

Chloroplast

d)

Mitochondria

26.

Raw material of respiration is

a)

Glucose and carbon dioxide

b)

Glucose and oxygen

c)

Glucose and fructose

d)

Glucose and sucrose

27.

What are the products of anaerobic respiration

a)

Glucose and oxygen

b)

Water and carbon dioxide

c)

Lactic acid

d)

Carbon monoxide

28.

Which equation shows the reaction for anaerobic respiration

a)

Carbon dioxide + water—> glucose and oxygen

b)

Glucose + oxygen-----> lactic acid Plus and energy

c)

Glucose + oxygen----> carbon dioxide, water and energy

d)

Glucose----> lactic acid and energy

29.

Respiratory pigment in human body is

a)

Chlorophyll

b)

Water

c)

Hemoglobin

d)

Anthocyanin

30.

Which of these is the difference between aerobic and anaerobic respiration in humans

a)

Aerobic respiration releases less energy than anaerobic does

b)

Glucose is completely broken down in aerobic respiration but not in anaerobic respiration

c)

Anaerobic respiration produces ethanol but aerobic respiration does not

31.

Where in the cell does aerobic respiration takes place

a)

Nucleus

b)

Cytoplasm

c)

mitochondria

d)

Cell membrane

32.

What is the molecule produced in mitochondria when glucose is broken down

a)

ATP

b)

ADP

c)

DNA

d)

NADP

33.

Lactic acid fermentation occurs in your muscles after a workout because your cells are struggling to get

a)

Glucose

b)

Sunlight

c)

Oxygen

d)

water

34.

This is a tube about 12 cm long with C shaped rings of cartilage

a)

Nasal cavity

b)

Trachea

c)

Oral cavity

d)

Pharynx

35.

Cluster of tiny air sacs that allows exchange of Oxygen and Carbon dioxide

a)

Larynx

b)

Pharynx

c)

Alveoli

d)

Bronchioles

36.

Muscular structure that helps to expand and contract the lungs forcing air in and out

a)

Alveoli

b)

Nasal cavity

c)

diaphragm

d)

Pharynx

37.

This is a tube like passage used for food, liquid and air

a)

Larynx

b)

Trachea

c)

Pharynx

d)

Lungs

38.

Alveoli increase the surface area in the lungs to allow

a)

More nutrients to be absorbed

b)

to breathe slowly

c)

To breathe faster

d)

More Oxygen and Carbon dioxide to exchange

39.

The part of human respiratory system which moisten the air and has hair to trap the dust particle

a)

Nasal cavity

b)

Larynx

c)

Glottis

d)

Bronchi

40.

Given the following structures:

1. Alveoli

2. Bronchi

3. Bronchioles

Which of the following is a correct order in which air would flow after inhalation

a)

1,2,3

b)

2,3,1

c)

2,1,3

d)

3,2,1

41.

Which of the following is not a characteristic of human lungs

a)

Both right and left lungs are composed of three lobes

b)

Bronchi divide to form bronchioles

c)

Capillary supply is abundant to facilitate gas exchange with the blood

d)

The alveoli are tiny air sacs arranged in clusters

42.

The movement of oxygen from the alveoli to the blood and from the blood to the tissues is due to the process of

a)

Osmosis

b)

Phagocytosis

c)

Cytokinesis

d)

Diffusion

43.

The role of the mucus and cilia in the respiratory system is to

a)

Warm the air

b)

Humidify the air

c)

Clean the air

d)

All of the options are true

44.

Left lung has two lobes and right long has three lobes because to accommodate

a)

Liver

b)

Stomach

c)

Pancreas

d)

Heart

45.

The outer covering of human lungs is called

a)

Pleural membrane

b)

Pericardium

c)

Cilia

d)

Epithelial tissue

46.

Name the Pores in a leaf through which respiratory exchange of gases takes place

a)

Lenticels

b)

Vacuoles

c)

Xylem

d)

Stomata

47.

When air is blown from mouth into a test tube containing lime water the lime water turns milky due to the presence of

a)

Carbon dioxide

b)

Oxygen

c)

Nitrogen

d)

Water vapour

48.

Rate of breathing in aquatic organism is much faster than Terrestrial organism due to

a)

Amount of oxygen in air is less than Water

b)

Amount of oxygen in water is less than air

c)

As they don't have lungs

d)

As they are very small

49.

The use of oxygen by the cells to release energy from food is called

a)

Photosynthesis

b)

Diffusion

c)

Osmosis

d)

cellular respiration

50.

During inhalation the diaphragm moves

a)

Downward

b)

Upward

c)

Right

d)

Left

51.

_____ Involves the use of oxygen to break down carbohydrates

a)

RESPIRETION

b)

EXCRETION

c)

RESPIRATION

d)

DIFFUSION

52.

Exchange of gases in unicellular organisms like amoeba takes place by ____

a)

DIFFUTION

b)

DIFFUSION

c)

DIFUSION

d)

DEFFUSION

53.

Terrestrial animal intake oxygen from ____

a)

PLANTS

b)

BIOSPHERE

c)

WATER

d)

ATMOSPHERE

54.

The complete oxidation of food yielding carbondioxide,water and energy in the presence of oxygen is ____

a)

ANAEROBIC RESPIRATION

b)

AEROBIC RESPIRATION

c)

EXTERNAL RESPIRATION

d)

INTERNAL RESPIRATION

55.

In plants during the day time ____ is Intaked and ____ released

a)

CARBON MONOXIDE, OXYGEN

b)

OXYGEN, CARBONDIOXIDE

c)

CARBONDIOXIDE, OXYGEN

d)

HELIUM,OXYGEN

56.

Aquatic animals take oxygen ____ in water

a)

DISSOLVED

b)

FRESH

c)

DISOLVED

d)

DISOULVED

57.

In animals as their body size is large so ____ is not enough

a)

EXCRETION

b)

RESPIRATION

c)

TRANPIRATION

d)

DIFFUSION

58.

In plants During the night time ____ is intaked and ____ is released

a)

WATER, CARBANDIOXIDE

b)

OXYGEN, CARBONDIOXIDE

c)

CARBONDIOXIDE, OXYGEN

d)

CARBANDIOXIDE, WATER

59.

Partial oxidation of food in the absence of oxygen in release of same amount of energy is ____

a)

INTERNAL RESPIRATION

b)

AEROBIC RESPIRATION

c)

ANAEROBIC RESPIRATION

d)

EXTERNAL RESPIRATION

60.

What is the two types of respiration

a)

ETERNAL RESPIRATION, INTERNAL RESPIRATION

b)

INGESION

c)

EXTERNAL RESPIRATION, INTERNAL RESPIRATION

d)

INGESTION

61.

_____ Respiration occurs in lungs where oxygen diffuses into the blood and carbondioxide diffuses into the alveolar air

a)

EXTERNAL

b)

OXIDIATION

c)

INTERNAL

d)

ABSORPTION

62.

Which Helps in carrying out the gases to the cells and out of the cells

a)

LYMPH

b)

HAMOGLOBIN

c)

PLASMA

d)

HAEMOGLOBIN

63.

Bronchi(1)-Nasal cavity(2)-Larynx(3)-Trachea(4)-Internal nostrils(5)-Pharynx(6)-Alveoli(7)-External nostrils(8)-Bronchioles(9)

a)

1->2->4->9->6->5->8->7

b)

8->2->5->6->3->4->1->9->7

c)

9->6->5->8->7->1->2->4

d)

1->2->3->4->5->6->7->8->9

64.

____ Respiration occurs in metabolism tissues where oxygen diffuses out of the blood and carbondioxide diffuses out of the cells

a)

TRANSPIRATION

b)

EXTERNAL

c)

INTERNAL

d)

TRANSPORTATION

65.

Respiratory pigment in the humans beings is

a)

RBC

b)

HAEMOGLOBIN

c)

WBC

d)

HAEMOGLOPIN

66.

Fluid similar to plasma but it's colourless with lesser protein

a)

HAEMOGLOBIN

b)

LYMPH

c)

PLATLETS

d)

PLASMA

67.

Blood is also known as

a)

HAEMOGLOBIN

b)

OXYGEN CARRIER

c)

FLUID CONNECTIVE TISSUE

d)

TRANSPORTER

68.

____ Transports oxygen,carbondioxide,food and nitrogenous waste

a)

PLATLETS

b)

PLASMA

c)

BLOOD

d)

HAEMOGLOBIN

69.

Functions of ____ is transport of respiratory gases,hormones,nutrients,enzymes,waste products

a)

BLOOD

b)

PLASMA

c)

HAEMOGLOBIN

d)

WBC

70.

____ Carry oxygenated blood to all parts

a)

VALVES

b)

CAPILLARIES

c)

VEINS

d)

ARTERIES

71.

____ Carry de-oxygenated blood from all parts of the body

a)

ATRIA

b)

VEINS

c)

VENTRICLES

d)

CAPILLARIES

72.

Heart has four chambers two upper and two lower chambers are

a)

ARTRIA, VENTRECLES

b)

ARTRIA, CAPILLARIES

c)

ATRIA, VENTRICLES

d)

ARTRIA, VENTRICLES

73.

Oxygenated blood enters in the left auricle from the lungs through

a)

PULMONARY VEIN

b)

CAPILLARIES

c)

PULMONARY ARTERIES

d)

VEINS

74.

____ Contracts and the blood is pumped to all parts of the body

a)

RIGHT ATRIUM

b)

LEFT VENTRICLE

c)

RIGHT VENTRICLE

d)

LEFT ATRIUM

75.

Respiration involves the use of oxygen to break down ______

a)

CARBONDIOXIDE

b)

PROTEIN

c)

FATS

d)

CARBANDIOXIDE

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