10.6 Life Processes- Set 1

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Questions are created by Dr. Abhijit Saha. If you have any suggestions please give at the end. Check other chapters also.

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 *

2 points

Hormones

Enzymes

Steroids

None of the above

2. Nutrients have important roles in (tick the most appropriate option) *

2 points

Growth and development

Obtaining energy

developing resistance against diseases

all of the above

3. Photosynthetic plants store carbohydrates in the form of *

2 points

Glycogen

Lipids

Starch

Glucose

4. Which of the following events is not a part of light reaction of photosynthesis? *

2 points

Splitting of water

Absorption of Light energy

Generating ATP

Reduction of Carbon di oxide

5. Identify the incorrect statement related to stomata *

2 points

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? *

2 points

Cuscuta

Lice

Tapeworm

Earthworm

7. Saliva contains an enzyme called *

2 points

Ptyalin

Pepsin

Trypsin

Lipase

8. Find the incorrect statement *

2 points

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? *

2 points

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? *

2 points

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 *

2 points

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. *

2 points

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. *

2 points

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. *

2 points

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? *

2 points

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 *

2 points

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. *

2 points

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? *

2 points

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)? *

2 points

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 *

2 points

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

How was this question paper? *

Very tough

Moderate

Quite easy

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