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The phenomenon observed in some plants w...

The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilisation is called

A

parthenocarpy

B

apomixis

C

vegetative propagation

D

sexual reproduction

Text Solution

Verified by Experts

The correct Answer is:
B

Apomixis is the phenomenon of formation of seeds without fertilisation. These embryos are genetically identical to the parental plant.
Other options are not correct to parthenocarpy and apornixis are different phenomenon . Parthenocarpy is the formation of fruits without fertilisation and hence the fruits are seedless, e.g., banana.
(i) Vegetative propagation or reproduction is a form of asexual reproduction in plants, in which new organisms arise without production of seeds or spores.
(ii) Sexual reproduction involves formation of the male and female gemetes , either by the same individual or by different individuals of the opposite sex. These gametes fuse of form the zygote which develops to form the new organism.
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  5. The phenomenon wherein, the ovary develops into a fruit without fertil...

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  6. Name the component cells of the 'egg-apparatus' in an embryo sac.

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  7. Name the part of gynoecium that determines the compatible nature of po...

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  8. Name the common function that cotyledons and nucellus perform.

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  9. Complete the following flow chart

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  10. Indicate the stages where meiosis and mitosis occur (1, 2 or 3 ) in th...

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  11. In the diagram given below, show the path of a pollen tube from the pl...

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  13. In a case of polyembryony if an embryo develops from the synergid and ...

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  14. Can an unfertilised, apomictic embryo sac give rise to diploid embryo ...

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  15. The three cells found in a pollen grain when it is shed at 3-celled st...

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  16. What is self-incompatibility ?

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  17. Name the type of pollination in self-incompatible plants.

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  18. Draw the diagram of a mature embryo sac and show its eight -uncleate, ...

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  19. Which is the triploid tissue in a fertilised ovule? How is the triploi...

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  20. Are pollination and fertilisation necessary in apomixis? Give reasons.

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