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

Related Mcqs:

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

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

2. Stomata cover only ______________ of leaf surface?

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

3. Proteins comprise of ___________% of the total dry weight of a cell?

   A. 40%
   B. 50%
   C. 60%
   D. 70%

4. The phylum chrordata comprise about how many species?

   A. 25,000
   B. 50,000
   C. 100,000
   D. 10,00,000

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

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

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

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

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

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

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

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

   Updated by: Haya Rai

9. Which of the following animals has a respiratory system with one way flow of the air through the lungs, and the air is renewed after inspiration?

   A. Cockroach
   B. Earthworm
   C. Aves
   D. Frogs

10. Sporangia of which of the following tracheopytes develop singly on the upper side of sporophylls which may or may not be arranged to form strobili_____________?

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