10.6 Life Processes- Set 1
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Your Name (in BLOCK letters)
If you are a Kendriya Vidyalaya Student, write name of the KVS Region, else write NA
1. Bio-catalysts are commonly known as
None of the above
2. Nutrients have important roles in (tick the most appropriate option)
Growth and development
developing resistance against diseases
all of the above
3. Photosynthetic plants store carbohydrates in the form of
4. Which of the following events is not a part of light reaction of photosynthesis?
Splitting of water
Absorption of Light energy
Reduction of Carbon di oxide
5. Identify the incorrect statement related to stomata
stomatal pore is guarded by cells called guard cells
opening and closing of Stomatal pore is a function of guard cells
Stomatal pore opens when the guard cells are flaccid
Stomatal pore helps in exchange of gas
6. Which of the following is not parasitic?
7. Saliva contains an enzyme called
8. Find the incorrect statement
Gastric glands are present in walls of the stomach
gastric glands release HCl, mucus and pepsin
pepsin is active in acidic medium
mucus plays no significant role in stomach
9. Small intestine is an important part of the alimentary system. Which of the following is not true?
here complete digestion of food occurs
medium here is alkaline
bile juice acts on fats
Bile juice is a strong lipid digesting enzyme
10. Which statement is true about absorption of food in humans?
Absorption of digested food occurs along the walls of the alimentary system
small intestine is not the only site of food absorption
Villi in small intestine helps food to pass on to large intestine
villi are rich in blood vessels to transport food to different parts
11. Residual volume of air is
the volume of air taken in and out during normal breathing
volume of air that can be forcefully taken in
volume of air that always remain in the lungs
sum total of all air volumes in lungs
12. Find the incorrect statement about transport of respiratory gases in human.
In human the respiratory pigment is haemoglobin
Haemoglobin has very high affinity for oxygen
Haemoglobin is present in RBCs
Oxygen is more soluble than Carbon-di-oxide and thus is transported through plasma
13. Recall the structure of human heart and find the correct statement about it.
Oxygenated blood enters into the right atria
Left ventricle pumps out oxygenated blood
Pulmonary vein carries deoxygenated blood to lungs
Pulmonary artery carries oxygenated blood from lungs to heart
14. You have studied differences between artery and vein. From the statements below, find the incorrect statement.
arteries have thick elastic walls and valves
veins have thinner walls than arteries
blood pressure is higher in arteries
veins carry blood towards heart
15. Which of the statements is not true for describing Lymph?
Lymph is also involved in transportaton
Lymph is tissue fluid
Lymph drains into vessels which finally opens into arteries
Lymph is colourless and contains less proteins
16. Transpiration is
absorption and upward movement of water in plants
loss of water vapour from aerial parts of the leaves
Intake of water vapour from aerial parts through stomata
Loss of water through vein endings of leaf
17. In the diagram two regions are marked A and B. From the statements below find the correct answer.
A is Glomerulus
B is Renal artery
A is Bowmans Capsule
B is Renal tubule
18. Which of the following statements is true for Dark reaction of Photosynthesis?
It occurs in dark i.e. at night only
It may occur in day time also
It occurs in the cytoplasm of mesophyll cells
Here water splits and oxygen is produced
19. Study the experimental setup related to Photosynthesis. Why a watch glass containing Potassium hydroxide is kept in (a)?
Potassium hydroxide absorbs oxygen
Potassium hydroxide absorbs carbon-di-oxide
Potassium hydroxide absorbs Nitrogen
Potassium hydroxide absorbs water vapour
20. Study the experiment and find the correct statement
tube 'a' is not turbid since carbon di oxide of air is injected
Tube 'b' is turbid since oxygen is exhaled into the solution
Tube 'a' will become turbid after some time since oxygen will start reacting
Tube 'b' is turbid due to Carbon di oxide from lungs enters the solution
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