The only promoter of leaf senescence in the following plant hormones is________________?

Related Mcqs:

1. The leaf is bilobed with midrib between them. The plant is____________?

   A. Saraccnia
   B. Dionaea
   C. Pitcher plant
   D. None of these

2. The contraction of which of the following muscle fibers, is controlled by hormones?

   A. A smooth muscle
   B. A cardiac muscle
   C. A skeletal muscle.
   D. All of these

3. The percentage of light absorbed by the leaf is ___________?

   A. 20%
   B. 15%
   C. 10%
   D. 1%

4. Stomata cover only ______________ of leaf surface?

   A. 0.03 – 0.04%
   B. 10%
   C. 1-2 %
   D. 50%

5. There are _________ stomata per square cm of leaf surface in Tobacco plants?

   A. 1200
   B. 12000
   C. 100,000
   D. 1000

6. The air spaces may comprise upto _________ of total volume of leaf surface?

   A. 30%
   B. 20%
   C. 40%
   D. 50%

7. The place of attachment of leaf with the shoot is called__________?

   A. Pith.
   B. Pit.
   C. Petiole
   D. Ecdysone

   Updated by: Haya Rai

8. Stress indicating hormones are____________?

   A. Cortisol
   B. Adrenaline
   C. ACTH
   D. All of these

   Submitted by: Muhammad Jamlish Roy

9. Which of the following plant group first formed true leaves________________?

   A. Psilopsida
   B. Lycopsida
   C. Sphenopsida
   D. Pteropsida

10. Which of the following plant group first formed true leaves?

    A. Psilopsida
    B. Lycopsida
    C. Sphenopsida
    D. Pteropsida

    Submitted by: Navid Muhammad