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Contraceptive oral pills used by females...

Contraceptive oral pills used by females help in birth control by :

A

Killing of ova

B

Killing of sperms

C

preventing ovulation

D

forming barrier between sperms and ova

Text Solution

Verified by Experts

The correct Answer is:
C
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GRB PUBLICATION-REPRODUCTIVE HEALTH-Assertion -Reason Type Questions
  1. Contraceptive oral pills used by females help in birth control by :

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  2. (A) : Each and every organism is capable to live only for a limited pe...

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  3. (A): Each organism has adopted its own mechanism of reproduction. (R...

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  4. (A) : A spore is a small , microsocpic , unicellular reproductive bod...

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  5. (A) : Sexual reproduction involves the formation and union of two game...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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