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प्रश्न
Name the functions - Acrosome of sperm.
What is the function of acrosome of sperm.
Name the function of the following:
Acrosome
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उत्तर
It is a cap-like structure present in the anterior part of the head of the sperm. It contains the hyaluronidase enzyme, which hydrolyses the outer membrane of the egg, thereby helping the sperm to penetrate the egg at the time of fertilization.
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संबंधित प्रश्न
Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions
(a) Acrosome
(b) Nucleus
(c) Middle piece
Define spermiogenesis.
Give scientific reason.
Older women are more likely to give birth to children with some abnormalities.
Give scientific reason.
There is a menopause when women are 45-50 years old.
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
Identify the given image and label its parts marked as a, b, c and d
Which of the following correctly describes the secondary oocyte?
500 spermatozoa are formed from ____________ secondary spermatocytes.
Draw a labelled diagram of a Graafian Follicle.
Select the pair of cells which does not divide further by mitosis.
Cavity of graafian follicle is ______.
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.
Preparation of sperm before penetration of ovum is ______.
The nutritive cells found in seminiferous tubules are ______.
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called ______.
After the release of the secondary oocyte, the Graafian follicle develops into ______.
Mark the odd one.
3-celled male gamete develops in:
During reproduction, the chromosome number (2n) reduces to half (n) in the gametes and again the original number (2n) is restored in the offspring. What are the processes through which these events take place?
What is spermatogenesis?
