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How many of the given statements are inc...

How many of the given statements are incorrect ?
I. The cavity of the cervix is called cervical canal which along with vagina forms the birth canal.
II. Spermatogenesis starts at the age of puberty.
III. At puberty, only `60,000-80,000` primary follicles are left in female body.
IV. In the early phase of pregnancy, a hormone called relaxin is also secreted by the ovary.

A

None

B

One

C

Two

D

Three

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many of the given statements are incorrect, we will evaluate each statement one by one. ### Step-by-Step Solution: 1. **Statement I**: "The cavity of the cervix is called the cervical canal which along with the vagina forms the birth canal." - **Evaluation**: This statement is correct. The cervical canal is indeed part of the birth canal, which also includes the vagina. The birth canal is the passage through which the baby is delivered. 2. **Statement II**: "Spermatogenesis starts at the age of puberty." - **Evaluation**: This statement is also correct. Spermatogenesis, the process of sperm formation, begins at puberty, typically between the ages of 10 to 15 in boys. 3. **Statement III**: "At puberty, only 60,000-80,000 primary follicles are left in the female body." - **Evaluation**: This statement is correct as well. By the time a female reaches puberty, the number of primary follicles decreases significantly due to degeneration, leaving approximately 60,000 to 80,000 primary follicles in each ovary. 4. **Statement IV**: "In the early phase of pregnancy, a hormone called relaxin is also secreted by the ovary." - **Evaluation**: This statement is incorrect. While relaxin is indeed a hormone that plays a role during pregnancy, it is primarily secreted by the placenta and is not secreted in significant amounts during the early phase of pregnancy. Its main role is related to the later stages of pregnancy and parturition. ### Conclusion: After evaluating all four statements, we find that only **one statement (Statement IV)** is incorrect. Therefore, the answer to the question is: **Only 1 statement is incorrect.** ---
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