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Pollen grains can be stored for several ...

Pollen grains can be stored for several years in liquid nitrogen having a temperature of :

A

`-120^@`

B

`-80^@`

C

`-196^@`

D

`-160^@`

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The correct Answer is:
C
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MODERN PUBLICATION-SEXUAL REPRODUCTION IN FLOWERING PLANT-EXERCISE
  1. Triple fusion in angiosperms is the fusion of second sperm with :

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  2. Total number of nuclei involved in double fertilization in angiosperms...

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  3. Pollen grains can be stored for several years in liquid nitrogen havin...

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  4. Name the process of formation of microspore from pollen mother cells.

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  5. Name the outer hard covering of pollen grains made up of sporopollenin...

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  6. What term is used for inner wall of the pollen grain?

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  7. Name the plant in which the pollen grains are not covered by exine.

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  8. What is the shield shaped single cotyledon of monocut called ?

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  9. Which part of ovule forms perisperm ?

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  10. Name the smallest flower of the world.

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  11. Name the largest flower of the world.

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  12. Which part of flower serves as landing platform of pollen grain?

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  13. Which term is used for basal bulging part of the pistil ?

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  14. What term is used for pollination achieved within same flower ?

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  15. What term is applied for transfer of pollen grains from anther to stig...

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  16. What is the special mechanism to produce seed without fertilization ?

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  17. Occurrance of more than one embryo in a seed.

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  18. True fruit is formed from .

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  19. The inactivity state of an embryo.

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  20. Name the structure that covers the root tip.

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