Question

Define sexual dimorphism? Give an example of an invertebrate phylum that shows this feature.

Answer 1

Sexual dimorphism:

1. Sexual dimorphism is the situation where the sexes of the same species show different qualities and specific characteristics that are not involved directly in reproduction.
2. This condition is very common in most animals and some plants as well.
3. The differences may involve secondary sex characteristics, size, weight, or behavioral or cognitive traits.

Example of an invertebrate phylum that shows this feature is:

1. Ascaris is a member of the phylum Aschelminthes and shows sexual dimorphism.
2. The external features can be a differentiator for the male and the female.