The percentage of light absorbed by the leaf is ___________?

Related Mcqs:

1. Which of the following light is least absorbed by the plants?

   A. Orange
   B. Red
   C. Blue
   D. Green

2. Which of the light is mainly absorbed by the plants?

   A. Orange
   B. Red
   C. Green
   D. Both A and B

3. What percentage of light reaching the earth is used in photosynthesis?

   A. 25%
   B. 10%
   C. 5%
   D. 1%

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

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

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

   A. Gibberellins
   B. Cytokinins
   C. Auxins
   D. Abscisic Acid

6. Stomata cover only ______________ of leaf surface?

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

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

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

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

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

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

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

   Updated by: Haya Rai

10. Gibberellins may be substituted for ___________ light, therefore promote flowering in long day plants?

    A. White
    B. Red
    C. Blue
    D. Green