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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.
APPEARS IN
संबंधित प्रश्न
With the help of diagrammatic representation, explain the process of gametogenesis
How is 'oogenesis' markedly different from 'spermatogenesis' with respect to the growth till puberty in the humans?
The following is the illustration of the sequence of ovarian events (a − i) in a human female
(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.
(iii) Explain the changes that occur in the uterus simultaneously in anticipation.
(iv) Write the difference between ‘c’ and ‘h’.
(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.
The fusion of the male and the female gametes is called ______.
Explain the structure of secondary oocyte.
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?
The glandular accessory organ which produces the largest proportion of semen is ____________.
Answer the following type of question Assertion (A) and Reason (R).
(A) - Head of the sperm consists of acrosome and mitochondria.
(R) - Acrosome contains spiral rows of mitochondria.
Formation of ____________ is an indication of the termination of oogenesis.
Which of the following correctly describes the secondary oocyte?
Identify the proper order of spermatogenesis and choose the correct option.
First meiotic division is observed in ____________.
Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?
The principal tail piece of human sperm shows the microtubular arrangement of ______.
At what stage of life is oogenesis initiated in a human female?
In oogenesis haploid egg is fertilised by sperm at which stage?
Penetration of the sperm in the ovum is followed by ______
The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
Sketch and label the process of oogenesis.
Draw a labelled diagram of a section through the ovary.
