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Assertion : In plants, apomixis is a for...

Assertion : In plants, apomixis is a form of asexual reporduction that minics sexual reproduction.
Reason : Apomixis involves the production of seeds without the fusion of gametes.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
a
Apomixis (apo-without, mixis-fusion) is a mode of reproduction in some plants which results in the formation of seeds without gametic fusion. It is a form of asexual reproduction. In plants apomixis commonly mimics sexual some species of Asteracease and grasses. There are several methods of apomictic development in seeds.
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Assertion :- Apomixis is a form of asexual reproduction that mimics sexual reproduction. Reason :- In apomixis there is formation of seed without fertilisation.

'Apomixes is a form of asexual is a form of asexual reproduction that mimics sexual reproduction in plant''. Explain with the help of a suitable example

Choose the correct option from the folllwong statements I Apormixis is form of asexual reproduction which mimcs sexual reproduction II in Apomixis seeds deveop either form diploid egg cell or form cells nucelluys III Seeds collected form hybrids plant maintaint hybrid character for a longer times IV In apomoxis there is segregation of character

Sexual reproduction always involves the fusion of gametes of male and female parents.

Assertion: Asexual reproduction is also called blastogenesis Reason: In asexual reproduction there is no formation and fusion of gametes

The offsprings formed by asexual reproduction method have greater similarity among themselves because : (i) asexual reproduction involves only one parent (ii) asexual reproduction involves two parents (iii) asexual reproduction involves gametes (iv) asexual reproduction involves does not involve gametes

Assertion : Sexual reproduction is advantage than asexual reproduction . Reason : It is rapid mode of reproduction while asexual reproduction while asexual reproduction is slow mode of reproductions.

Assertion: Isogamy is a primitive type of sexual reproduction. Reason: The gametes are of diferent sizes.

NCERT FINGERTIPS-SEXUAL REPRODUCTION IN FLOWERING PLANTS-Sexual Reproduction In Flowering Plants
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  4. In a flower, if the megaspore mother cell forms magaspores without und...

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  9. Assertion : In most angiosperms, microspores of a tetrad grow and sepa...

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  12. Assertion : Although geitonogamy is functionally crosspollination invo...

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  13. Assertion : Hydrophily constitues a major mode of pollination in most ...

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  14. Assertion : Only the pre-pollination growth of male gametophyte occurs...

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