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(A): A haploid parent products gametes b...

(A): A haploid parent products gametes by meiotic divi-soin.
(R) Majority of animals and possess a haploid body.

A

If both (A) and (R) are true and (R ) is the correct explanation of (A)

B

If both (A) and (R) are true but (R ) is not the correct explanation of (A)

C

If (A) is true but (R) is true

D

If both (A) and (R) are false.

Text Solution

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The correct Answer is:
d
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A haploid plant produces male or female gametes by

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A haploid parent produces gametes by . . . . . . A. . . . .division while diploid parent produces gametes by . . . . . . B . . . . Division.

Assertion: Several organisms belonging to monera,fungi,algae and bryophytes produces gametes by mitosis. Reason: the plant body of the monera, fungi,algae and bryophytes is haploid.

Which are haploid,gametes or spores?

Assertion (A): Haploid cells are formed by meiosis cell division. Reason (R ): Gametes are haploid cells.

Assertion : The haploid plant body (gametophyte) produces gametes by mitosis Reason : Diploid sporophytic plant body produces spores by meiosis.

Assertion a. Gametes are formed independently either from diploid or haploid parents. Gametes are always haploid Reason r. In diploid parents, gametes are formed through mitosis and meiosis while in haploid parents it occurs through meiosis.

GRB PUBLICATION-REPRODUCTIVE HEALTH-Assertion -Reason Type Questions
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  2. (A) : Sexual reproduction involves the formation and union of two game...

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  3. (A): A haploid parent products gametes by meiotic divi-soin. (R) Maj...

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  4. (A): In majority of algae, fishes and amphibians external fertilizatio...

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  5. (A): Sexually reproducing organisms begin life as a single cell. (R)...

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  6. (A) : Parthenogenesis means the growth and development of an egg witho...

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  7. (A) : Lower plants usually reproduce by asexual means. (R) : It help...

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  8. (A): Progressive degeneration of sexuality is a primitive character in...

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  9. (A) : Accessory organs of the flowers are sterile parts. (R) : They ...

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  10. (A) : Pollens are produced in microsporangia after meiotic divison. ...

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  11. (A) : Exine of pollen is chiefly made up of sporopollenin. (R): Spor...

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  12. (A) : Ovule is an integumented megasporangium . (R) It does not dehi...

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  13. (A) : Incampylotropous type the body of ovule is horseshoe shaped. (...

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  14. (A) : Cleistogamous flowers are ususally self pollinated. (R) : Thes...

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  15. (A) : All graminaceous flowers are always wing pollinated. (R) : The...

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  16. (A) : Insect visit flowers to collect honey. (R): Attraction of flow...

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  17. (A) : Mammalian ova produces an emzyme hyaluronidase. (R): This enzy...

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  18. (A) : Testes of mammals are present outside abdomnial cavity in scrota...

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  19. (A) : Whales and elephants have abdominal testes. (R) : Being poilil...

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