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प्रश्न
What is the difference between a primary oocyte and a secondary oocyte?
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उत्तर
| Primary oocyte | Secondary oocyte |
| Primary oocyte is a diploid cell formed in foetal ovary when the gamete mother cell, oogonia is arrested at prophase-I of meiosis. | Secondary oocyte is the haploid cell formed from primary oocyte that completes its first meiotic division, during puberty and produces the female gamete ova. |
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संबंधित प्रश्न
With the help of diagrammatic representation, explain the process of gametogenesis
The fusion of the male and the female gametes is called ______.
The male sex hormone testosterone is secreted from ____________.
The process which the sperm undergoes before penetrating the ovum is ____________.
The Androgen Binding Protein (ABP) is produced by ____________.
Answer the following type of question Assertion (A) and Reason (R).
(A) - In human males, testes are extra-abdominal and lie in scrotal sacs.
(R) - Scrotum acts as a thermoregulator and keeps the temperature lower by 2°C for normal sperm production.
Expand the acronym.
hCG
500 spermatozoa are formed from ____________ secondary spermatocytes.
Which of the following is diploid?
Gray crescent is the area ______.
The head of the epididymis at the head of the testis is called ______.
Acrosome is a type of ______.
Which of the following are called dual gland?
After the release of the secondary oocyte, the Graafian follicle develops into ______.
Aquatic animals in which fertilisation occurs in water are said to be
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n = 50 shall be:
The mother germ cells are transformed into a mature follicle through series of steps. Provide the missing steps in the blank boxes.
Sketch and label the process of oogenesis.
The diagram given below shows the various steps in spermatogenesis.
- Name the parts labelled '1', '2' and '3'.
- Name the process by which part '3' changes to part '4'.
Draw a labelled diagram of a section through the ovary.
