Question

Syngamy can occur outside the body of the organism in

• A. mosses
• B. algae
• C. ferns
• D. fungi.

Hint:

Syngamy is the complete and permanent fusion of male and female gametes to form the zygote. 

Answer 1

The Correct Option is B

To understand where syngamy can occur outside the body of the organism, we first need to comprehend what syngamy is. Syngamy is the process of fusion of gametes to form a zygote. This process is essential for sexual reproduction in many organisms.

Syngamy can occur in the following contexts:

• Algae: In many species of algae, syngamy occurs externally. This means that the gametes are released into the water where they fuse to form a zygote.
• Mosses: In mosses, syngamy typically happens internally within the archegonium, which is a structure on the plant where fertilization occurs.
• Ferns: Similar to mosses, ferns also have syngamy occurring within the structure of the plant. The male gametes swim towards the female gametes within the female reproductive structure.
• Fungi: In fungi, syngamy can take different forms, often involving plasmogamy and karyogamy which may or may not occur inside a specific organism's body.

From this analysis, it is clear that:

• In algae, syngamy generally happens outside the organism's body, especially in aquatic environments where gametes are released into the surrounding water.

Therefore, the correct answer is algae.

Conclusion: Among the options given, algae is the organism where syngamy typically occurs outside the body due to its aquatic environment where gametes are released and fertilize externally.