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प्रश्न
How is the chromosome number maintained in sexually reproducing organisms?
उत्तर
In sexually reproducing organisms. chromosome number is maintained by process of meiosis in which chromosome number is reduced to half which is restored on fertilization.
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संबंधित प्रश्न
Higher organisms have resorted to sexual reproduction in spite of its complexity. Why?
What is the name of sex cells (other than gametes)?
In which sort of reproduction are gametes involved?
Give reason for the following:
The parents and off-springs of organisms reproducing sexually have the same number of chromosomes.
The correct sequence of organs in the male reproductive system for the transport of sperms is:
(a) testis → vas deferens → urethra
(b) testis → ureter → urethra
(c) testis → urethra → ureter
(d) testis → vas deferens → ureter
Differentiate between the following:
External fertilisation and Internal fertilisation.
What is atresia with respect to ovary in human females?
Differentiate between the following:
Regeneration in lizard and Planaria
Which of the following is the male accessory gland?
Identify the correct sequence of events.
