Life process in Animals and Plants – Online MCQs Test – Biology MCAT

1. Urea is formed in

Gall bladder

Liver

Urinary bladder

Kidney

2. Trypsinogen is activated to trypsin by

Lipase

Pepsin

Gastrin

Enterokinase

3. Absorption of water by root is increased by

Increase in the rate of photosynthesis

Decrease in transpiration

Decrease in salt uptake?

Increase in transpiration

4. The site/s where most of the uptake of water and minerals take place is/are

Underground stern

Root cells

None of these

Root hairs

5. Nitrogen fixing bacteria are present in _____ of leguminous plants.

Root nodules

Stem

Leaflets

Seedlings

6. Function of gall bladder is:

Storage of bile

Production of bile

Formation of enzymes

Formation of bile salts

7. Opening of wind pipe is closed by

Glottis

None of them

Larynx

Epiglottis

8. After infection of germs immunity acquired is

Passive immunity

Artificial immunity

Active and Passive immunity

Active immunity

9. Pharynx of planaria opens in

Stomach

Oesophagus

Absent

Intestine

10. Pepsinogen is secreted by

Oxyntic cells

Parietal cells

Zymopen cells

Mucous cells

11. All of the Following are correct about human circulation EXCEPT

The pacemaker of the heart is the SA node

Arteries have thick muscular walls

Leukocytes fight disease

The only artery carrying deoxygenated blood is the aorta

12. On the basis of mode of nutrition, organisms are

Autotrophic

Autotrophic and Heterotrophic

Heterotrophic

None of them

13. All of the following are correct about human circulation EXCEPT

Your heart rate normally changes in response to physical activity

Blood in capillaries travels slowly to allow for diffusion of nutrients and waste

Normal blood pressure is higher in males than in females

The average heart rate and pulse is about 70 beats per minute

14. Stomata communicates with the spaces present between

All of them

Phloem

Mesophyhll

Xylem

15. It stimulates the production and release of secretin:

Mucous secreted by intestine

Bile salts secreted by live

NaHCO₃ secreted from pancreas

HCI present in chyme

16. Wilting of leaves in hot weather is due to

Lack of water absorption

Excessive transpiration

Excessive water absorption by roots

Excess of transpiration as compared to water absorption

17. The terminal part which is the site for exchange of gases

Alveoli

Air sacs

Trachioles

Trachea

18. Which is true about plasma cells?

They offer permanent resistance to disease.

When activated they turn into memory cells.

They fight antigens and die in battle.

They are found only in people who are infected with me AIDS virus.

19. Na+, K+ dependent ATPase activity helps in the transport of

K+ inward only

Na inward only

K+ inward. Na+ outward

K+ outward, Na+ inward

20. Blocking of arteries is due to deposition of fats and calcium is called

Arteriosclerosis

Heart syndrome.

Atherosclerosis

Emphysema

Life process in Animals and Plants (nutrition/ gaseous exchange/ transport)-Medical College Admission Test Preparation Notes