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For normal fertility, how many percentag...

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

A

0.5

B

0.25

C

0.4

D

0.6

Text Solution

AI Generated Solution

The correct Answer is:
To determine the percentage of sperm that must have a normal shape and size for normal fertility, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Sperm Quality**: For successful fertilization, sperm must be of good quality, which includes having a normal shape and size. This is crucial for their ability to swim and reach the egg. 2. **Sperm Count in Semen**: A typical ejaculation contains about 2 to 2.5 ml of semen, which can have approximately 200 to 300 billion sperm. However, only one sperm is needed to fertilize an egg. 3. **Importance of Normal Shape and Size**: The quality of sperm is assessed based on various parameters, including morphology (shape and size). A sufficient percentage of sperm must have normal morphology to ensure fertility. 4. **Percentage Requirement**: Research and medical guidelines indicate that for a man to be considered fertile, at least 60% of his sperm should have a normal shape and size. 5. **Converting Percentage to Decimal**: To express the percentage in decimal form, we convert 60% to 0.6. 6. **Selecting the Correct Option**: Among the options provided (0.5, 0.25, 0.4, 0.6), the correct answer is 0.6, as it represents the required percentage of sperm with normal shape and size for normal fertility. ### Final Answer: The percentage of sperm that must have normal shape and size for normal fertility is **0.6**. ---
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