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

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

MCAT Biology Notes from Chapter 9 [Life process in Animals and Plants (nutrition/ gaseous exchange/ transport)] for Medical College Entry Test Preparation

1. In planaria numerous small braches which end blindly are called as

Intestinal caeca

Digestive tract

Intestinal and Hepatic

Hepatic caeca

2. A yellow substance oozing out from wound has

Lymph + RBC dead bacteria

Lymph + WBC + dead bacteria

Lymph + dead leucocytes

Lymph RBC + WBC

3. The movement of materials through the vascular tissue of plants is called

Transpiration

Translocation

Transduction

Transcription

4. Which of the following theory gives the latest explanation for the closure of stomata?

Starch glucose theory

Munch theory

Active K transport theory

fluid mosaic theory

5. Fats are digested in:

Small intestine

Buccal of villus

Stomach

Large intestine

6. A double layered sac structure that protects lungs is:

Pleura

Peritonium

Capsule

Pericardium

7. Hydrochloric acid is secreted by

Mucous cells

Zymogen cells

None of them

Oxyntic cells

8. All of the following are correct about the normal direction of blood flow EXCEPT

Right atrium → tricuspid valve

Lungs → pulmonary vein

Aortic semilunar valve → aorta

Vena cava → right ventricle

9. Function of villus is:

To secrete intestinal juices for digestion

To protect the inner wall from sharp pieces of toot.

To act as sieve tor indigested food

To increase the surface area of the gut wall

10. Parietal cells perform such function as

Decreasing in stomach PH

Production of stomach

Regulation of blood

Protein digestion

11. __________ is elimination of indigestible wastes form body.

Absorption

Assimilation

Egestion

Ingestion

12. Carbon dioxide is carried as bicarbonate ions combined with ___ plasma:

magnesium

Sodium

Potassium

Iron

13. First component of food to be digested in our digestive track is.

Vitamins

Carbohydrate

Lipid

Protein

14. What is the function of bile salts?

All of them

Assimilation of fat

Emulsification of fats

Absorption of fats

15. organisms can exist in inorganic environment.

Heterotrophic

None of them

Autotrophic

Autotrophic and Heterotrophic

16. The opening between the right atrium and the right ventricle is guarded by a valve called _x_, whereas _y guards the opening of the left atrium and the left ventricle

x is bicuspid valve, y is semilunar valve

x is bicuspid valve, y is tricuspid valve

x is semilunar valve, y is tricuspid valve

x is tricuspid valve, y is bicuspid

17. In succulent plants, the stomata are open at night and close during day. Which among the following would be the best hypothesis to explain the mechanism of stomatal action at night only?

Low CO₂ concentration accumulates organic acids resulting in the increased concentration of cell sap.

Increase in CO₂ concentration, conversion of organic acids into starch resulting in the increased Conversion into sugars resulting in K+ transport.

CO₂ accumulates, reduces pH, stimulates enzymes, resulting in accumulation of sugars.

CO₂ used up, increased pH results in accumulation of sugars.

18. Mammals are said to have a “double circulatory system this means

That there are two types of blood vessels attached to every organ an artery and a vein

That the blood circulated twice as quickly

That the blood vessels are paired

That there are two system one from’ the heart to the lungs and back to the heart, and the other to the heart from rest of the body

19. How many pairs of spiracles are present in cockroach?

20 pairs

60 pairs

50 pairs

10 Pairs

20. When a cell is fully turgid, which of the following will be zero’?

Suction pressure

Osmotic pressure

Turgor pressure

Wall pressure

Online MCQs Test preparation for Biology MCAT (Medical College Admission Test Preparation Notes) helps students practice effectively. These multiple-choice questions are taken from Chapter 9 “Life process in Animals and Plants” of the Biology MCAT textbook.

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