Biology 11 Chapter - 10 Form and Function in Plants -19

Biology 11 Chapter - 10
Form and Function in Plants -19

1. In vernalization, the stimulus of the low temperature is received by?

a) Shoot apex
b) Leaves
c) Root apex
d) All of these

2. The most effective amount of temperature for vernalization is ___degree centigrade?

a) 4
b) 3
c) 6
d) 10

3. The temperature range for vernalization is ___ degree centigrade?

a) 0 to 10
b) 10 to 20
c) 0 to 20
d) 10 to 30

4. Plants lasting for two years are called?

a) Biennials
b) Annuals
c) Perennials
d) None of these

5. The hormone which induces vernalization is known as?

a) Vernalin
b) Cytokinin
c) Auxin
d) Abscisic acid

6. Vernalin is actually?

a) Gibberellin
b) Cytokinin
c) Auxin
d) Ethene

7. It is found essentically in organic compounds

a) calcium
b) nitrogen
c) carbon
d) phosphorus

8. Chlorosis occurs due to the deficiency of

a) sulphur
b) magnesium
c) phosphorus
d) calcium

9. Carnivorous plants use insects as a source of

a) wate
b) glucose
c) oxygen
d) nitrogen

10. Most of the uptake of water and minerals from soil takes place througha) epidermal cells
b) root cap
c) root
d) root hair

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