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

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

Arteries have thick muscular walls

Leukocytes fight disease

The pacemaker of the heart is the SA node

The only artery carrying deoxygenated blood is the aorta

2. Parietal cells perform such function as

Protein digestion

Decreasing in stomach PH

Regulation of blood

Production of stomach

3. Midgut in cockroach is a short narrow tube called

Stomach

Hepatic caeca

Gizzard

Rectum

4. By nature, ribulose is

Carbohydrate

Vitamin

Protein

Fat

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

Nitrites

Nitrogen oxide

Nitrogen

Nitrates

6. The element required by plants in large quantity is

Sulphur

Nitrogen

Phosphorus

Calcium

7. In lungs, air ultimately reaches into

Bronchioles

Trachea

Bronchus

Alveoli

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

The night temperature is going to fall.

Atmosphere outside the stomata is becoming less humid.

Water molecules enter the guard cells.

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

9. Detritivores feed on

Organic debris

Animals

Al of them

Plants

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

Osmotic pressure

Turgor pressure

Water potential

Wall pressure

11. Which one of the following doesn’t help in molecular transport?

Surface tension

Osmosis

Active transport

Diffusion

12. Thin walled ducts present in birds are called

Tracheoles

Parabronchi

Bronchi

Bronchioles

13. Lenticels and hydathodes are small pores with following common attributes..

They allow exchange of gases

They always remain closed

Their opening and closing are not regulated

They are found on the same organ of plants

14. Cuscuta is

Total root parasite

Epiphyte

Total stem parasite

Partial stem parasite

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

Your heart rate normally changes in response to physical activity

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

Normal blood pressure is higher in males than in females

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

16. A pair of insectivorous plants is

Venus fly trap and Rafflesia

Nepenthes and Bladderwort

Drosera and Rafflesia

Dionaea and Viscum

17. Which of the following statements is false?

Scurvy is caused by the deficiency of vitamin C.

Pancreas is both an exocrine and endocrine gland.

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

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

18. An illness which largely affects girls usually just after the onset of puberty.

None of these

Obesity

Bulimia nervosa

Anorexia nervosa

19. Absorption of water by root is increased by

Increase in the rate of photosynthesis

Increase in transpiration

Decrease in transpiration

Decrease in salt uptake?

20. What is the main source of gaseous exchange in plants?

Phloem vessels

Stomata

Xylem vessels

All of them

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