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Q 1. Circulatory system is open in
Prawn
Toad
Lizard
Pigeon
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Q 2. Which is not excretory organ?
Skin
Kidney
Liver
Pancreas
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Q 3. Special excretory organ is lacking in :
Earthworm
Amoeba
Man
Insects
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Q 4. In which form is food transported in plants
Sucrose
Fructose
Glucose
Lactose
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Q 5. From where does {tex}\mathrm{CO_2}{/tex} comes, when we exhale?
from air that we breathe in
from water
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
Roots of eucalyptus
Stamen of mustard
All of the above
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Q 7. Excretion is a function of
Intestine
Kidney
Stomach
None
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Q 8. Respiration in plants take place in
Day time
Night time
Both (a) & (b)
None
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Q 9. Air contain {tex}\mathrm{CO_2}{/tex} and {tex}\mathrm{O2}{/tex}, while inspiration
{tex}\mathrm{CO_2}{/tex} come in and {tex}\mathrm{O_2}{/tex} out
{tex}\mathrm{O_2}{/tex} come in {tex}\mathrm{CO_2}{/tex} out
{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
Digestion
Assimilation
Respiration
Excretion
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Q 11. Disease caused due to excess of sugar in blood?
Diabetes
Hepatitis
TB
BP
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Q 12. Crocodile have _______number of chambers of heart in comparison to human.
more
less
equal
none
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Q 13. The end product of carbohydrate digestion is
Maltose
Sucrose
Glucose
Lactose
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Q 14. Oxygen evolved during photosynthesis comes from
{tex}\mathrm{CO_2}{/tex}
{tex}\mathrm{H_2O}{/tex}
Both (A) and (B)
None of these
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Q 15. The atmosphere contains {tex}\mathrm{CO_2}{/tex} by volume
0.1%
0.5%
0.03%
0.3%
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Q 16. A cell that lacks chloroplast does not
Evolve carbon dioxide
Liberate oxygen
Require water
Utilize carbohydrates
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Q 17. Rate of photosynthesis is independent of
Quality of light
{tex}\mathrm{NO_2}{/tex}
Light duration
{tex}\mathrm{CO_2}{/tex}
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Q 18. Most effective wavelength of light for photosynthesis is
Red
Yellow
Green
Violet
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Q 19. Photolysis of water takes place in
Calvin cycle
Glycolysis
Light phase
Dark Phase
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Q 20. Man needs carbohydrates as a source of energy and he can get this energy from
Cellulose
Starch
Both (A) and (B)
None of these
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Q 21. Trypsin converts
Fats into fatty acids
Starch and glycogen into maltose
Proteins into peptones
Sucrose into glucose and fructose
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Q 22. Liver cells secrete
Lipase
Bile and no enzyme
Trypsin
Amylase
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Q 23. Glycogen is stored in
Liver and muscles
Liver only
Pancreas
Muscles only
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Q 24. Gastric juice contains
HCl
Renin
Pepsin
All of these
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Q 25. Saliva contains
Ptyalin
Renin
Trypsin
All of these