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Pollen grains are stored for long period...

Pollen grains are stored for long period without losing its viability in

A

liquid nitrogen

B

liquidsulphur

C

liquidsulphur at -`196°c`

D

liquidsulphur at `-196.5°c`

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The correct Answer is:
A
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MAXIMUM PUBLICATION-SEXUAL REPRODUCTION IN FOLLOWING PLANTS-EXERCISE
  1. Egg apparatus of angiosperms consist of One synergid and two egg ce...

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  2. In some organisms, karyokinesis is not followed by cytokinesis as e re...

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  3. During the formation of embryo sac, the functional megaspore undergoes

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  4. One adavantage of Cleistogamy is

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  5. Which one of the following statements is not true?

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  6. Sporopollenin is chemically

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  7. Which one of the following pairs of plant structures has haploid numbe...

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  8. What does filiform apparatus do at the entrance into ovule. It

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  9. Which one of the following plant products is the hardest ?

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  10. A typical angiosperm embryo sac at maturity is

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  11. Why sometimes, even diploid offspring is produced through parthenogene...

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  12. Pollen grains are stored for long period without losing its viability ...

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  13. Filliform apparatus of an embryosac is located at

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  14. Double fertilization is very common in

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  15. In Citrus and mango the polymbryony is the special feature of occuranc...

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  16. Triple fusion takes place in angiosperm is due to

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  17. In 40 percent of angiosperms, pollen grains are shed at

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  18. In artificial hybridization bagging is done to

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  19. How many mitotic divisions are required for the formation of mature em...

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  20. The allergies and bronchial affictions in some people often leading to...

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