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Assertion: Human male ejaculates about 5...

Assertion: Human male ejaculates about 5-100 million sperms during a coitus.
Reason: For normal fertillity at least 40 percent sperms must have normal shape and size.

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Human male ejaculates about 200 to 300 million sperms during a coitus of which, for normal fertility, at least 60 percent sperms must have normal shape and size and atleast 40 percent of them must show vigorous motility.
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Given below are four statement (A-D) each with one of two blanks .Select the option which correctly fill up the blanks in two statements A The human male ejaculates about (i) million sperms during a cooitus . Out of which for normal fertility at teast (iii) percent sperms must have normal shape and size B. A primary spermatocyte completes (i) meiotic division leading to the formation of two equal haploid cells called (i) C. Spermatogenesis starts at the age of (i) due to significant increase in the secretion of (ii) a hypothalamic hormone D. Oogenesisi is initiated during embryonic development and at puberty only (i) primary follicles are left in each overy

The human male ejaculates about ul((A)) million sperms during a coitus of which for normal fertility at least ul((B)) percent sperms must have normal shape and size and at least ul((C)) percent of them must show vigorous motility.

For normal fertility, how many percentage of sperm must have normal shape and size:-

At least ______of sperms should have normal shape for normal fertility.

Assertion: For normal fertility at least 40 per cent djaculated sperm must have normal shape and size and at least 60 per cent of them must show vigorous motility. Reason: The semen along with the sperms called the seminal plasma.

During coitus, the human male ejaculates about

Read the following statements - P . Each famale foetus ovary possess a couple of billion gamete mother cells. Q. Spermatogenesis starts at puberty R. In semen, at least 40% sperms should have a normal shape for fertility. How many of given statements are not true?

In a normal adult human, the sperm count is "300" million per ejaculation. How many sperms must have normal shape, size and vigorous motility for normal fertility per ejaculation?

NCERT FINGERTIPS-HUMAN REPRODUCTION-Human Reproduction
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  2. Urethral meatus refers to the

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  3. Mourla is a developmental stage

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  4. The membranous cover of the ovum at ovulation is

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  5. Identify the odd one from the following.

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  6. Assertion: A drop in temperature does not affect spermatogensis. Rea...

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  7. Assertion: The regions outside the seminiferous tubules are called int...

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  8. Assertion: Each seminiferous tubule is lined on its inside by three ty...

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  9. Assertion: Infundibulum is a funnel shaped part closer to ovary. Rea...

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  10. Assertion: The shape of the uterus is like an inverted pear. Reason:...

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  11. Assertion: The endometrium undergoes cyclical changes during menstrual...

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  12. Assertion: The female external genitalia includes mons pubis, labia ma...

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  13. Assertion: The type B spermatogonia are called primary spermatocytes. ...

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  14. Assertion: The middle piece is called as power house of the sperm. R...

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  15. Assertion: Human male ejaculates about 5-100 million sperms during a c...

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  16. Assertion: All copulations do not lead to the fertilisation and pregna...

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  17. Assertion: All embryo with 8 to 16 blastomeres is called a morula. R...

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  18. Assertion: After implantation, finger-like projections appear on the t...

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  19. Assertion: During pregnancy the levels of hormones like estrogens and ...

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  20. Assertion: Vigorous contraction of the uterus at the end of pregnancy ...

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