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Formation of embryo directly from nucell...

Formation of embryo directly from nucellus and integument is

A

adventure polyembryony

B

apospory

C

apogamy

D

apomixis

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The correct Answer is:
A
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ARIHANT NEET-SEXUAL REPRODUCTION IN FLOWERING PLANTS -ASORTED QUESTIONS
  1. A nuclear endosperm at a very stage of development

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  2. After the seedling begins to photosynthesise, the cotyledons

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  3. Formation of embryo directly from nucellus and integument is

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  4. Despite high level of heterozygosity, the progeny derived from a seed ...

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  5. The orthid flowers emit a chemical that resembles the odour produced b...

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  6. Development of a portophyte directly from the gametophytic tissue is c...

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  7. What is the function of tapetum in a developing anther?

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  8. An orchid resembles female of an insect so as to get pollinated. The p...

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  9. Movement of pollen tube towards embryo sac is

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  10. Pollen grains are able to tolerate extremes of temperature and desicca...

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  11. Cross pollination is preferred over self pollinationn because it

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  12. During formation of pollen grains, a microspore mother cell undergoes

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  13. In a type of apomixis known as adventure embryony embryos develop dire...

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  14. Formation of more than four spores in a tetrad known as polyspory is f...

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  15. A particular species of plant produces light, non-sticky pollen in lar...

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  16. A seed that lacks endosperm. It may be

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  17. Which of these following are related with embryo sac? Oenothera type...

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  18. In microporangium, microspore tetrad are formed due to

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  19. The Ubish bodies are involved in

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  20. The hydrophilous flowers, pollinated completely under water, are known...

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