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Dichogamy favouring cross-pollination is...

Dichogamy favouring cross-pollination is a type of floral mechanism where

A

Anthers and stigma are placed at different levels

B

Stamens and stigmas mature at different times

C

Strucure of anther and stigma act as barrier

D

Pollen is unable to germinate on its own stigma

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The correct Answer is:
B
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AAKASH SERIES-SEXUAL REPRODUCTION IN FLOWERING PLANTS -EXERCISE - II
  1. Xenia refers to the effect of pollen on

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  2. If a pollen of a flower falls on the stigma of another flower belongin...

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  3. Dichogamy favouring cross-pollination is a type of floral mechanism wh...

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  4. When the pollen grains are not trasferred from anthers to the stigma i...

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  5. Entomophilous flowers are

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  6. A close relation between flower and pollinating agent is best exhibite...

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  7. The insect Blastophaga grossorum is associated with the pollination of

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  8. Fusion of one male gamete with the egg cell and fusion of another male...

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  9. The movement of pollen tube towards embryo sac is

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  10. At what stage of endosperm development, you will observe nuclear or ce...

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  11. Milky water of green coconut is

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  12. Food material in exalbuminous seed is mainaly stored in

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  13. In the formation of 50 zygotes in a tobacco plant, the minimum number ...

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  14. When a diploid female plant is crossed with a tetraploid male, the plo...

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  15. The formation of fruits without fertilization is known as

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  16. Apospory is defined as

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  17. Apomixis in plant means development of a plant

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  18. Pollination in Vallisneria is by

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  19. The total number of nuclei involved in double fertilisation in angiosp...

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  20. A dry, one-celled and one-seeded fruit developing from a bicarpellary,...

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