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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

Structure 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. The term xenia denotes the effect of pollen on the

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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 transferred from anthers to the stigma ...

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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 in the carpel towards the embryo sac is

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  10. At which stage one can distinguish between nuclear and cellular type o...

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  11. Milky water of green tender conconut called coconut milk is

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  12. Food material in exalbuminous seed is mainaly stored in

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  13. How many meiosis are required to produce 50 seeds of tobacco? (a) 62 ...

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  14. When a diploid femlae palnt is crossed with a tetrapoid male the ploid...

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  15. Formation of seed without fertilization is known as

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  16. Apospory is direct formation of

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  17. Apomixis is deveolpment of new plant

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  18. The pollination in Vallisneria is

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

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  20. Dry indehiscent single-seeded fruit formed from bicarpellary syncarpou...

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