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Worksheets

Life Processes

Total questions: 60

Worksheet time: 3600secs

Name
Class
Date
1.

Raw materials used in the autotrophic mode of nutrition is:

a)

Glucose, Starch, Fructose

b)

Protein, Fats

c)

Carbon dioxide, water

d)

Hydrogen, Oxygen

2.

Photosynthesis is:

a)

Trapping energy of sunlight to form glucose.

b)

Synthesis of photosensitive compounds.

c)

Oxidation of glucose

d)

Oxidation of carbon dioxide

3.

Chlorophyll is mainly located in which part of the plant

a)

Green leaf

b)

Bark

c)

Stem

d)

Root

4.

Chlorophyll has a porphyrin ring with _ _ _ _ _ at the centre.

a)

Iron (Fe)

b)

Chromium (Cr)

c)

Magnesium (Mg)

d)

Carbon (C)

5.

Chlorophyll pigment is located in which organelle of a cell?

a)

Mitochondria

b)

Vacuole

c)

Plastid

d)

Chloroplast

6.

Apart from the plant which microorganism also do photosynthesis:

a)

Algae and cyanobacteria

b)

Fungi

c)

Paramecium

d)

Amoeba

7.

Heterotrophic nutrition is

a)

The utilization of energy obtained by the plants.

b)

Breakdown of Glucose into energy

c)

Oxidation of Glucose

d)

All

8.

Digestion of food in amoeba occurs in

a)

Nucleus

b)

Cytoplasm

c)

Food vacuole

d)

None

9.

Which of the following statements about the autotrophs is incorrect?

a)

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

b)

They store carbohydrates in the form of starch

c)

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

d)

They constitute the first trophic level in food chains

10.

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

11.

The valve present between right atrium and right ventricle.

a)

tricuspid

b)

bicuspid

c)

pulmonary

d)

aortic

12.

In CAM plants CO2 is stored in the form of _________ in the vacuoles.

a)

lactic acid

b)

malic acid

c)

palmitic acid

d)

linoleic acid

13.

It is the site of gaseous exchange in human lungs.

a)

villi

b)

alveoli

c)

trachea

d)

larynx

14.

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

a)

osmosis

b)

transportation

c)

diffusion

d)

elimination

15.

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

a)

DNA

b)

RNA

c)

ADP

d)

ATP

16.

_______________ is the final product of glycolysis.

a)

carbon dioxide

b)

ATP

c)

Pyruvic acid

d)

acetyl coA

17.

Glycolysis takes place in the __________ of the cell.

a)

mitochondria

b)

ribosomes

c)

cytoplasm

d)

Golgi complex

18.

The continuous contractions and relaxations of the digestive organs is called

a)

peristalsis

b)

photosynthesis

c)

expansion

d)

constriction

19.

_________________ artery carries deoxygenated blood.

a)

aortic

b)

pulmonary

c)

renal

d)

inferior

20.

chloroplasts are present in the ___________ of the leaf.

a)

palisade parenchyma

b)

aerenchyma

c)

sclrenchyma

d)

collenchyma

21.

_________________ artery carries deoxygenated blood.

a)

aortic

b)

pulmonary

c)

renal

d)

inferior

22.

Glycolysis takes place in the __________ of the cell.

a)

mitochondria

b)

ribosomes

c)

cytoplasm

d)

Golgi complex

23.

_______________ is the final product of glycolysis.

a)

carbon dioxide

b)

ATP

c)

Pyruvic acid

d)

acetyl coA

24.

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

a)

DNA

b)

RNA

c)

ADP

d)

ATP

25.

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

a)

osmosis

b)

transportation

c)

diffusion

d)

elimination

26.

It is the site of gaseous exchange in human lungs.

a)

villi

b)

alveoli

c)

trachea

d)

larynx

27.

The valve present between right atrium and right ventricle.

a)

tricuspid

b)

bicuspid

c)

pulmonary

d)

aortic

28.

Lymph does not comprise of

a)

Red Blood Corpuscles

b)

Lymphocytes

c)

Leucocytes

d)

Nitrogenous Waste

29.

Crocodiles have ______ chambered heart.

a)

two

b)

three

c)

four

d)

none of these

30.

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

31.

Which among of the following substances are reabsorbed in the nephron?

a)

Urea, Uric acid, Amino acid

b)

Glucose, Amino acids, Salts

c)

Glucose, Urea, Creatinine

d)

KCl, Urea, Glucose

32.

How is food transported to the food vacuole of paramecium?

a)

By movement of cilia

b)

By pseudopodia

c)

Food vacuole directly captures the food

d)

By contractile vacuole

33.

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

a)

Excretion

b)

Respiration

c)

Nutrition

d)

Circulation

34.

The process that involves oxidation of food to release energy is known as _____

a)

Breathing

b)

Excretion

c)

Circulation

d)

respiration

35.

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.

36.

Name the tissue responsible for the transportation of sugar and amino acids in plants.

a)

Xylem

b)

Stomata

c)

root hairs

d)

Phloem

37.

Identify the structure.

a)

Nephron

b)

Alveolar sac

c)

Alimentary canal

d)

None of these

38.

A: The length of the small intestine in cows is longer than in tigers.

R: Cellulose digestion takes lesser time than the digestion of flesh.

a)

Both A and R are true and R is the correct explanation of the A.

b)

Both A and R are true but R is not the correct explanation of the A.

c)

A is true but R is false.


d)

A is false but R is true.

39.

A: Walls of the intestine have numerous villi.

R: These villi increase the surface area of digestion.

a)

Both A and R are true but R is the correct explanation of the A.

b)

Both A and R are true but R is not the correct explanation of the A.

c)

A is true but R is false.

d)

A is false but R is true.

40.

A: When air is passed through lime water, it turns milky.

R: air contains 78% nitrogen and 21% oxygen.


a)

Both A and R are true and R is the correct explanation of the A.

b)

Both A and R are true and R is not the correct explanation of the A.

c)

A is true but R is false.

d)

A is false but R is true.

41.

The largest artery in the human body is _________________

a)

pulmonary artery

b)

venacava

c)

capillaries

d)

aorta

42.

Pericardium is the protective membrane outside the _________

a)

Heart

b)

Kidney

c)

Lungs

d)

Stomach

43.

The blood vessels that carry blood back to the heart is ___________

a)

artery

b)

vein

c)

capillary

d)

platelets

44.

Guard cells are usually ___________________

a)

rectangular in shape

b)

pear-shaped

c)

spherical

d)

kidney shaped

45.

Excess glucose is stored in the form of glycogen in the _____________

a)

pancreas

b)

gall bladder

c)

blood

d)

liver

46.

  1. Amoeba captures its food with the help of _________

a)

tentacles

b)

claws

c)

cillia

d)

pseudopodia

47.

Kind of nutrition in which the organisms feed on dead and decaying organic matter is ____________

a)

Holozoic

b)

saprophytic

c)

parasitic

d)

autotrophic

48.

Villi present on the internal wall of intestine help in

the

a)

emulsification of fats

b)

breakdown of proteins

c)

absorption of digested food

d)

digestion of carbohydrates

49.

During vigorous physical exercise, lactic acid is formed

from glucose inside the muscle cells because

a)

there is lack of oxygen

b)

there is lack of water

c)

there is excess of carbon dioxide

d)

none of the above

50.

Which chambers of human heart contain oxygenated

blood?

a)

Left atrium and left ventricle

b)

Left atrium and right ventricle

c)

Right atrium and left ventricle

d)

Right atrium and right ventricle

51.

The breakdown of pyruvate to give carbon-di-oxide,

water and energy takes place in:

a)

cytoplasm

b)

mitochondria

c)

chloroplast

d)

nucleus

52.

The process of transpiration in plants helps in:

a)

Opening of stomata

b)

Absorption of CO2 from atmosphere

c)

Upward conduction of water and minerals

d)

Absorption of O2 from atmosphere

53.

Instrument used to measure blood pressure is

a)

barometer

b)

thermometer

c)

anemometer

d)

sphygmomanometer

54.

The digestive juice produced by stomach contains

a)

Hydrochloric acid

b)

Pepsin

c)

Mucus

d)

Trypsin

55.

Strongest muscle in our body is

(a)  

56.

Teeth are covered with a thin coating of

a)

Dentine

b)

Crown

c)

Enamel

d)

Cementum

57.

What is the full form of ATP?

(a)  

58.

When do plants do most of their respiration?

a)

Daytime

b)

Nighttime

59.

Diagram shows a model of human respiratory system. K represents....

a)

lung

b)

rib cage

c)

diaphragm

d)

thoracic cavity

60.

Epiglottis is the structure that opens or closes the trachea.

a)

TRUE

b)

FALSE