Animal and Plant Physiology MCQ’s

By: Prof. Dr. Fazal Rehman | Last updated: May 13, 2025

1. : Transpiration is…
(A) dry environment
(B) high atmospheric humidity
(C) good soil moisture
(D) high wind velocity

2. : Wooden doors are difficult to open or close during rainy season due to…
(A) Osmosis
(B) Diffusion
(C) Plasmolysis
(D) Imbibition

3. : Which of the following is caused by cooling of plants?
(A) Assimilation
(B) Transpiration
(C) Guttation
(D) Photorespiration

4. : Water absorption takes place through ——–
(A) Taproot
(B) Root hairs
(C) Lateral roots
(D) Root cap

5. : Anti-transpirant is…
(A) AUG
(B) IAA
(C) PMA
(D) PAN

6. : Little leaf disease deficiency is…
(A) Manganese
(B) Nitrogen
(C) Zinc
(D) Molybdenum

7. : Bacteroid is…
(A) A bacteria-like substance
(B) Living bacteria
(C) Living bacteria but cannot divide
(D) Dead bacteria

8. : Which of the following is very important for photolysis of water?
(A) Fe
(B) Zn
(C) Mn
(D) Mg

9. : Photosynthesis is the process of…
(A) Reductive, endergonic and catabolic
(B) Reductive, exergonic and catabolic
(C) Reductive, exergonic and anabolic
(D) Reductive, endergonic and anabolic

10. : ——- is the precursor of cytokinins…
(A) Cytidine
(B) Thymine
(C) Adenine
(D) Guanine

11. : Which of the following are not true about polyamines?
(A) Spermidine
(B) Lysine
(C) Spermine
(D) Putrescine

12. : Traumatic acid is…
(A) Wound hormone
(B) Growth hormone
(C) Stress hormone
(D) Flowering hormone