Choose the correct statement from the following

Options

A. Internal fertilisation shows a greater degree of synchrony due to the production of a large number of gametes.
B. Offsprings born external fertilisation are extremely vulnerable to predators.
C. Both birds and reptiles show external
D. Non - motile male gametes are the characteristic feature of internal fertilisation.

Answer

To solve the question of choosing the correct statement, let's analyze each statement provided:

1. **Statement 1**: "Internal fertilization shows a greater degree of synchrony due to the production of a large number of gametes."
- **Analysis**: This statement is incorrect. Internal fertilization does not show a greater degree of synchrony; rather, external fertilization is characterized by the release of a large number of gametes into the environment, which allows for synchrony between the sexes to ensure successful fertilization.

2. **Statement 2**: "Offspring born from external fertilization are extremely vulnerable to predators."
- **Analysis**: This statement is correct. Offspring produced through external fertilization, such as fish and amphibians, are often laid in open water or other environments where they are exposed to predators, making them more vulnerable compared to those born from internal fertilization.

3. **Statement 3**: "Both birds and reptiles show external fertilization."
- **Analysis**: This statement is incorrect. Birds and reptiles primarily exhibit internal fertilization. Birds lay eggs that are fertilized internally, and reptiles also generally fertilize their eggs internally before laying them.

4. **Statement 4**: "Motile male gametes are the characteristic features of internal fertilization."
- **Analysis**: This statement is misleading. While it is true that motile male gametes (sperm) are involved in internal fertilization, this characteristic is not exclusive to internal fertilization as many organisms with external fertilization also have motile sperm.

**Conclusion**: The correct statement is **Statement 2**: "Offspring born from external fertilization are extremely vulnerable to predators."