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Class 10

Explore popular questions from Life Processes for Class 10. This collection covers Life Processes previous year Class 10 questions hand picked by experienced teachers.

Life Processes

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Q 1. Circulatory system is open in

Prawn

B

Toad

C

Lizard

D

Pigeon

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Q 2. Which is not excretory organ?

A

Skin

B

Kidney

C

Liver

Pancreas

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Q 3. Special excretory organ is lacking in :

A

Earthworm

Amoeba

C

Man

D

Insects

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Q 4. In which form is food transported in plants

Sucrose

B

Fructose

C

Glucose

D

Lactose

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Q 5. From where does {tex}\mathrm{CO_2}{/tex} comes, when we exhale?

A

from air that we breathe in

B

from water

C

from dead cells of our body

from oxidation of food

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Q 6. Photosynthesis take place in

green stem of desert plant

B

Roots of eucalyptus

C

Stamen of mustard

D

All of the above

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Q 7. Excretion is a function of

A

Intestine

Kidney

C

Stomach

D

None

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Q 8. Respiration in plants take place in

A

Day time

B

Night time

Both (a) & (b)

D

None

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Q 9. Air contain {tex}\mathrm{CO_2}{/tex} and {tex}\mathrm{O2}{/tex}, while inspiration

A

{tex}\mathrm{CO_2}{/tex} come in and {tex}\mathrm{O_2}{/tex} out

B

{tex}\mathrm{O_2}{/tex} come in {tex}\mathrm{CO_2}{/tex} out

C

{tex}\mathrm{CO_2}{/tex} and {tex}\mathrm{O_2}{/tex} both come out

{tex}\mathrm{CO_2}{/tex} and {tex}\mathrm{O_2}{/tex} both comes in

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Q 10. Energy is produced by the process of

A

Digestion

B

Assimilation

Respiration

D

Excretion

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Q 11. Disease caused due to excess of sugar in blood?

Diabetes

B

Hepatitis

C

TB

D

BP

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Q 12. Crocodile have _______number of chambers of heart in comparison to human.

A

more

B

less

equal

D

none

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Q 13. The end product of carbohydrate digestion is

A

Maltose

B

Sucrose

Glucose

D

Lactose

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Q 14. Oxygen evolved during photosynthesis comes from

A

{tex}\mathrm{CO_2}{/tex}

{tex}\mathrm{H_2O}{/tex}

C

Both (A) and (B)

D

None of these

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Q 15. The atmosphere contains {tex}\mathrm{CO_2}{/tex} by volume

A

0.1%

B

0.5%

0.03%

D

0.3%

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Q 16. A cell that lacks chloroplast does not

A

Evolve carbon dioxide

Liberate oxygen

C

Require water

D

Utilize carbohydrates

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Q 17. Rate of photosynthesis is independent of

A

Quality of light

{tex}\mathrm{NO_2}{/tex}

C

Light duration

D

{tex}\mathrm{CO_2}{/tex}

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Q 18. Most effective wavelength of light for photosynthesis is

Red

B

Yellow

C

Green

D

Violet

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Q 19. Photolysis of water takes place in

A

Calvin cycle

B

Glycolysis

Light phase

D

Dark Phase

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Q 20. Man needs carbohydrates as a source of energy and he can get this energy from

A

Cellulose

Starch

C

Both (A) and (B)

D

None of these

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Q 21. Trypsin converts

A

Fats into fatty acids

B

Starch and glycogen into maltose

Proteins into peptones

D

Sucrose into glucose and fructose

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Q 22. Liver cells secrete

A

Lipase

Bile and no enzyme

C

Trypsin

D

Amylase

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Q 23. Glycogen is stored in

Liver and muscles

B

Liver only

C

Pancreas

D

Muscles only

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Q 24. Gastric juice contains

A

HCl

B

Renin

C

Pepsin

All of these

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Q 25. Saliva contains

Ptyalin

B

Renin

C

Trypsin

D

All of these