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

1. When a potato piece is kept in a highly concentrated salt solution then the

Potato is deplasmolysed

Potato is plasmolyzed

There is no effect due to isotonic solution

Potato cells get bursted

2. In lungs, air ultimately reaches into

Trachea

Bronchioles

Alveoli

Bronchus

3. In which animal respiration takes place by skin?

Earthworm

Earthworm and Frog

Fish

Frog

4. 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 tricuspid valve

x is tricuspid valve, y is bicuspid

x is semilunar valve, y is tricuspid valve

x is bicuspid valve, y is semilunar valve

5. Transpiration occurs through

All aerial parts

Stem

Leaves

Roots

6. Photorespiration occurs during time.

Night

Day

Night and Day

None of them

7. Which of the following statements is false?

Blood from the right side of the heart is carried to the lungs by the pulmonary artery.

Pancreas is both an exocrine and endocrine gland.

The term pleura refers the double layered covering of the kidney.

Scurvy is caused by the deficiency of vitamin C.

8. Exchange of substances between individual cells and their environments takes place by

Active transport

All of the above

Osmosis

Diffusion

9. A charge that is related to inspiration in humans is:

Floor of buccal cavity is raised

Diaphragm becomes dome shaped

Ribs move inward and downward

Lungs are inflated

10. Pharynx of planaria opens in

Stomach

Oesophagus

Intestine

Absent

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

None of them

Autotrophic

Heterotrophic

Autotrophic and Heterotrophic

12. projects from the large intestine between ileum and colon.

Caecum

Jejunum

Colon

Rectum

13. In rainy season, the doors get wet due to

Diffusion

Imbibition

Endosmosis

Absorption

14. Stomata opens at night and closes during day in

Hydrophytes

Xerophytes

Mesophytes

Gametophytes

15. By which process gases are exchanged during respiration?

Osmosis

Active transpiration

Diffusion

All of them

16. It stimulates the production and release of secretin:

Bile salts secreted by live

Mucous secreted by intestine

NaHCO₃ secreted from pancreas

HCI present in chyme

17. give rise to macrophages, which destroy larger particles by phagocvtosis.

lnterterons

Neutrophils

Antitoxins

Lymphocyte

18. Of the processes which occur in leaves, the one which may lower their temperature (cooling effect) is

Respiration

Photosynthesis

hydrolysis

Transpiration

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

Active K transport theory

Munch theory

Starch glucose theory

fluid mosaic theory

20. Most plants obtain nitrogen from the soil in the form of:

Nitrogen oxide

Nitrites

Nitrogen

Nitrates

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