Multiple choice

The life history of which of the following organisms includes both polypoid as well as medusoid forms?

a. Aurelia b. Hydra c. Obelia d. Pennatula

  1. Only a and b

  2. Only a and c

  3. Only a and d

  4. Only b and d

  5. Only b and c

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The life history of Hydra and Obelia includes polypoid as well as medusoid form.