Question

Polymorphism can be seen in

• A. Physalia
• B. Velella
• C. Obelia
• D. All of the above

Answer 1

The correct option is D All of the above

Polymorphism the feature of the population which includes more than one type of structurally and functionally different individuals.
For example, in Obelia shows polymorphism, the gastrozooids for feeding and the individuals capable of asexual reproduction only are the gonozooids, the blastostyles and medusae.
In the species of Velella, the offspring shows polymorphism in the orientation of their sails.
In Physalia, the polymorphic forms are pneumatophore, gastrozooid, dactylozooid, gonozooid.
Therefore, the correct answer is option D.