For human female which of the following is incorrect?

Options

A. Menstrual cycle takes 28 days on an average
B. Menopause occurs at 45-55 years of age.
C. The eggs released during pregnancy die.
D. Menstruation takes 4 days on an average.

Explanation

To determine which statement is incorrect regarding human females, let's analyze each option step by step:

### Step 1: Analyze the first statement
- **Statement**: The menstrual cycle takes 28 days on average.
- **Analysis**: The average menstrual cycle in human females is indeed around 28 days, although it can vary from 21 to 35 days. This statement is correct.

### Step 2: Analyze the second statement
- **Statement**: Menopause occurs at the age of 45 to 55 years.
- **Analysis**: Menopause typically occurs between the ages of 45 and 55, with the average age being around 50. This statement is also correct.

### Step 3: Analyze the third statement
- **Statement**: The egg released during pregnancy dies.
- **Analysis**: During pregnancy, high levels of progesterone prevent ovulation by inhibiting the secretion of FSH and LH. Therefore, no eggs are released during pregnancy, and the statement implies that an egg is released and then dies, which is incorrect. This statement is incorrect.

### Step 4: Analyze the fourth statement
- **Statement**: Menstruation takes 4 days on average.
- **Analysis**: The duration of menstruation typically lasts between 4 to 6 days. This statement is correct.

### Conclusion
The only incorrect statement among the options is the third one: "The egg released during pregnancy dies."

### Final Answer
The incorrect statement is: **The egg released during pregnancy dies.**

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