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The intine of a pollen grain is mainly m...

The intine of a pollen grain is mainly made up of

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Sporopollenin
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pollen grains

Exine of pollen grain

Intine of pollen grain is made of

Diameter of pollen grain is

Assertion : Exine of a pollen grain is made up of sporopollenin which is resistant to high temperature, strong acid or alkali as well as enzymatic degradation. Reason : Sporopollenin is absent in the region of germ pores.

Exine of pollen grain is made up of

The intine of pollen grains is composed of

Study of pollen grains is

Identify the pair of wrong statements I. Intine of pollen grains is made up of sporopollenin, II.l Pollen grains are well preserved as fossils because of the presence of sporopollenin, III. Enzymes can degrade the organic material of the pollen grain exine, IV. Sporopollenin can withstand high temperature, strong acids and alkali

Study of pollen grains is called

ALLEN-SEXUAL REPRODUCTION IN FLOWERING PLANTS-S
  1. The intine of a pollen grain is mainly made up of

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  2. Which of the following statement is correct ?

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  3. Anther of angiosperm generally composed of

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  4. Many pollen tubes are formed during the germination of pollen grains i...

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  5. Pollinia are sac like structures

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  6. Main function of middle layer in microsporangium is

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  7. In which of the following Pollinia are formed ?

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  8. In monocots male gametophyte is represented by

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  9. How many microspores are formed from 10 microspore mother cells by mei...

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  10. Which type of dehiscence of anther is found in most of the Angiosperms...

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  11. Generally how many megaspores take part in the development of female g...

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  12. Reduction division in angiosperm occurs at the time of ?

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  13. Which structure of ovule, takes part in storage of food ?

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  14. Pericarp develops from

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  15. When ovule is straight so the funiculus, chalaza and micropyle lie in ...

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  16. In pea, which type of ovule is found?

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  17. Microscopic structure of the flower that contains vegetative cell ?

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  18. Polygonum type of embryosac is

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  19. The ploidy level of secondary nucleus of embryosac is :-

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  20. Syngamy means.

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  21. The double fertilization is the only characteristic of :-

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