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. Exchange of gases between blood and alveolar air in lungs occurs by:

Osmosis

All of these

Active transport

Simple diffusion

2. Basis of stomatal opening is

Endosmosis

Plasmolysis of guard cells

Exosmosis

Decrease in cell sap concentration

3. Diffusion is very important for plants since it is the only means of

Gaseous exchange within plant

Sugar transport from phloem to sink

Water translocation in root

Mineral translocation in root

4. The lacteal is found in the _________ and is involved with _______

Villi the absorption of fatty acids

Duodenum: hydrolysis of lipids

Colon; the reabsorption of water

Stomach: release of hormones

5. It stimulates the production and release of secretin:

Mucous secreted by intestine

NaHCO₃ secreted from pancreas

Bile salts secreted by live

HCI present in chyme

6. In which animal respiration takes place by skin?

Earthworm

Fish

Frog

Earthworm and Frog

7. Which of the following correctly follows the flow of blood in the human body?

Left atrium—left ventricle—pulmonary artery—lungs—pulmonary vein—right atrium

Right ventricle—pulmonary artery—lungs—pulmonary vein—left atrium

Right ventricle—aorta—body—left atrium—left ventricle—pulmonary artery

Left atrium—left ventricle—pulmonary artery—pulmonary vein—right atrium

8. Chyme is formed by the action of

Oral cavity

Large intestine

Small intestine

Stomach

9. By which process gases are exchanged during respiration?

All of them

Diffusion

Osmosis

Active transpiration

10. Function of villus is:

To secrete intestinal juices for digestion

To act as sieve tor indigested food

To increase the surface area of the gut wall

To protect the inner wall from sharp pieces of toot.

11. Drosera catches insects by means of

Tentacles secreting shining liquid

Pitcher

Bladder

Adhesive disc

12. The liver stores carbohydrates in the form of:

Starch

Glycogen

Glucose

ATP

13. Which one of the followina statements is correct with reference to the circulation of blood in a mammal?

Pulmonary artery returns oxygenated blood from the lungs to the left auricle.

Venous blood is returned to the left auricle.

Left auricle receives oxygenated blood from the lungs.

Pulmonary vein carries venous blood from right auricle to lungs

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

That the blood vessels are paired

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

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

That the blood circulated twice as quickly

15. All of the following are part of the first line of defense EXCEPT

Skin

Stomach acid

Leukocytes

CiIia

16. Fats are digested in:

Large intestine

Stomach

Small intestine

Buccal of villus

17. In trees, death of protoplasts is essential for a vital function such as

Water transport

Food transport

water and food transport

Stomatal movements

18. Which of the following is NOT part of the lymphatic system?

adenoids

liver

spleen

Tonsils

19. Which of the following is the most likely cause for wider opening of stomata?

Water molecules enter the guard cells.

Secretion of salt molecules by adjacent guard cells is taking place.

The night temperature is going to fall.

Atmosphere outside the stomata is becoming less humid.

20. 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 tricuspid valve, y is bicuspid

x is bicuspid valve, y is semilunar valve

x is semilunar valve, y is tricuspid valve

x is bicuspid valve, y is tricuspid valve

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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