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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
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.
Male and female gametes are ______.
The process of release of the ovum from a mature follicle is called ______.
Identify True/False statement. Correct the false statement to make it true.
Oogenesis takes place in the corpus luteum.
In case of sexual reproduction, newborn show similarities about characters. Explain this statement with suitable examples.
Give a schematic representation of spermatogenesis and oogenesis in humans.
500 spermatozoa are formed from ____________ secondary spermatocytes.
Identify the longest period of menstrual cycle.
The human male gamete is usually about ______ in length.
How many sperms are formed from a secondary spermatocyte?
The immature male germ cell undergo division to produce sperms by the process of spermatogenesis.
Choose the correct one with reference to the above.
The cell which undergoes meiosis I during spermatogenesis is the ______.
Identify the wrong statement from the following.
Spermiation is the process of the release of sperm from ______.
Which of the following groups of cells in the male gonad, represent haploid cells?
Penetration of the sperm in the ovum is followed by ______
Which type of cell division forms spermatids from the secondary spermatocytes?
What is spermatogenesis?
The process of gametogenesis is initiated by ______ and ______ hormones respectively.
