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प्रश्न
At the time of birth, there are _______________ oocytes in the ovary of a female foetus.
विकल्प
1 to 2 million
2 to 3 million
2 to 4 million
none of these
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उत्तर
At the time of birth, there are 2 to 4 million oocytes in the ovary of a female foetus.
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संबंधित प्रश्न
The glandular accessory organ which produces the largest proportion of semen is ____________.
The part labelled as ______ contains the energy source that facilitates sperm motility.
Select the pair of cells which does not divide further by mitosis.
How many sperms are formed from a secondary spermatocyte?
Sertoli cells are found in ______.
Which of the following groups of cells in the male gonad, represent haploid cells?
Which of the following is a primary sex organ of female?
What does the figure represent?
In the process of fertilization, this is true:
3-celled male gamete develops in:
Given below are two statements.
- Statement I: The spermatids are non-motile and non-functional which get transformed into functional spermatozoa by the process of spermiogenesis.
- Statement II: During the process of this change, the spermatids remain held to each other and to Leydig's cells by cytoplasmic bridges.
In light of the above statements, select the correct answer from the option given below.
Draw a neat and labelled diagram of spermatogenesis.
Sketch and label the process of oogenesis.
What is spermatogenesis?
The process of gametogenesis is initiated by ______ and ______ hormones respectively.
Match List - I with List - IІ.
| List - I | List - II |
| A. Head | I. Enzymes |
| B. Middle piece | II. Sperm motility |
| C. Acrosome | ΙII. Energy |
| D. Tail | IV. Genetic material |
Choose the correct answer from the options given below:
During oogenesis the meiotic division is arrested at ______ before fertilization.
Complete the analogy with respect to the structure of sperm.
Nebenkern : ‘X’ : : Acrosome is formed from : ‘Y’
