Home
Class 12
BIOLOGY
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.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Assertion**: The assertion states that a human male ejaculates about 5 to 100 million sperms during coitus. This figure is significantly lower than the actual average sperm count during ejaculation. - **Hint**: Recall the typical sperm count range for human males during ejaculation. 2. **Evaluating the Reason**: The reason provided states that for normal fertility, at least 40% of the sperms must have a normal shape and size. This percentage is also incorrect as the actual requirement is higher. - **Hint**: Consider the percentage of sperms that need to be normal in shape and size for optimal fertility. 3. **Comparing Both Statements**: Both the assertion and the reason contain incorrect information. The actual sperm count during ejaculation is typically around 200 to 500 million, and for normal fertility, at least 60% of the sperms should have a normal shape and size. - **Hint**: Think about the implications of having a lower percentage of normal sperms on fertility. 4. **Conclusion**: Since both the assertion and the reason are false, the correct answer to the question is that both statements are incorrect. - **Hint**: Review the definitions of assertion and reason in the context of biological concepts to solidify your understanding. ### Final Answer: Both the assertion and the reason are false.
### Step-by-Step Solution: 1. **Understanding the Assertion**: The assertion states that a human male ejaculates about 5 to 100 million sperms during coitus. This figure is significantly lower than the actual average sperm count during ejaculation. - **Hint**: Recall the typical sperm count range for human males during ejaculation. 2. **Evaluating the Reason**: The reason provided states that for normal fertility, at least 40% of the sperms must have a normal shape and size. This percentage is also incorrect as the actual requirement is higher. ...
Promotional Banner

Similar Questions

Explore conceptually related problems

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.

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?

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?

Go through the following statements:- (i). Primary spermatocytes undergo mitotic divisions to produce secondary spermatocytes (ii). Sperms released from the seminiferous tubules are fuly mature and motile (iii) The head of sperm possesses may mitochondria which produce energy for the movement of tail (iv) The human male ejaculates about 20-30 million sperms during a coitus which of these are correct?

Assertion : In the human the temperature of scrotum is 2-2.5^(@)C lesser then normal body temperature . Reason : Formation of sperm does not occur at normal core body temperature . (a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion . (b) If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. (c) If Assertion is True but the Reason is False . (d) If both Assertion & Reason are False.

Assertion : The activation of sperm is called capacitation Reason : Capacitation takes about 5-6 h.

Assertion : GM salmon was the first transgenic animal for performing vaccine safety tests Reason : For the production of GM salmon, genetically modified ova were fused with normal sperms of the same species.