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Many mammals, especially those living in...

Many mammals, especially those living in natural, wild conditions exhibit reproductive cycles only during favourable seasons in their reproductive phase and are therefore called.

A

Continuous breeders

B

Seasonal breeders

C

Reflex breeders

D

Spontaneous breeders.

Text Solution

Verified by Experts

The correct Answer is:
B

Many mammals, especially those living in natural wild conditions exhibit reproductive cycles only during favourable seasons in their reproductive phase and are therefore called seasonal breeders.
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Read the following text and answer the following questions on the basis of the same: During sexual reproduction, the male inserts the sperm into the female reproductive tract, and sperm receive by the ovary and after that sperm fuse with the egg (ovum) in the ampullary region, this process is called fertilization, haploid nucleus of sperm fuse with that of ovum to form Diploid zygote. Assertion (A): All copulations do not lead to the fertilisation and pregnancy. Reason (R): Fertilisation can occur only if the ovum and sperms are transported simultaneously to the ampulllary-isthmic junction.

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A2Z-REPRODUCTIVE IN ORGANISMS-Section A: Topicwise Questions (topic 2: Sexual Reproduction) Pre-fertilisation Events , Gametogenes
  1. Sexual reproduction involves formation of the male and female gametes ...

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  2. As compared to the asexual reproduction, the sexual reproduction is

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  3. Read the following statements and find out the incorrect statement.

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  4. All organisms have a to reach a certain stage of growth and maturity i...

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  5. Recognise the figure and find out the correct matching.

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  6. In some algae, the two gametes are so similar in appear-ance that is n...

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  7. The end of juvenile/vegetative phase marks the beginning of the

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  8. Match the columns I and II, and choose the correct combination from th...

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  9. An angiospermic plant starts producing flower. This is the beginning o...

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  10. Which of the following is a parameter of senescence or old age?

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  11. Which one of the following plant shows unusual flowering phenomenon?

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  12. Strobilanthus kunthiana flowers once in

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  13. Strobilanthus kunthiana is found in India in

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  14. Many mammals, especially those living in natural, wild conditions exhi...

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  15. Recognise the figure and find out the correct matching.

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  16. The birds /hens in captivity (as in poultry farms) can be made to lay ...

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  17. Transitions between the juvenile, reproductive and senescent phases in...

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  18. Interaction between . . . . . . And certain environmental factors regu...

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  19. The sequential events in the sexual reproduction may be grouped into

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  20. Which of the following group uses water as medium for gamete transport...

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