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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) `-160^(@)C`
(B) `-120^(@)C`
(C) `-196^(@)C`
(D) `-80^(@)C`

A

`-160^(@)C`

B

`-120^(@)C`

C

`-196^(@)C`

D

`-80^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
C
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KUMAR PRAKASHAN-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Section -F (Multiple Choice Questions)
  1. The ovule of angiosperm equals to what?

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  2. By which agents is pollination carried out in Eichhornia and Lotus? (...

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  3. In majority angiosperms…… (A) There are filiform apparatus in egg cel...

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  4. Which of the following statement is not true? (A) Insects which consu...

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  5. By what name is cotyledon of maize seed is known ?

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  6. The front end of filament is connected to what?

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  7. Which process is associated in seed formation without fertilisation in...

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  8. Which of the following is not correct? (A) outer layer of pollen gra...

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  9. Double fertilisation is a unique characteristics of which plant? (A) ...

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  10. Functional megaspore develops into…. In gymnosperms (A) Ovule (B) E...

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  11. A dioecious flowering plant prevents both ….. (A) Self fertilisation ...

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  12. Attractants and rewards are required for (A) anemophily (B) entomop...

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

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  14. Which one of the following plants shows a very close relationship with...

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  15. Double fertilization is

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  16. Which of the following has proved helpful in preserving pollen as foss...

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  17. The phenomenon observed in some plants where in parts of the sexual ap...

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  18. Which one of the following statements regarding post-fertilization dev...

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  19. In some seeds such as black pepper and beet nucellus may be persistent...

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  20. What is the fate of the male gametes discharged in the synergid? (A) ...

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