Metagenesis - Practice Questions & MCQ

• The reproduction occurs through both asexual and sexual means. 
• Budding is the common method of asexual reproduction. 
• Sexual reproduction occurs through the formation of gametes. 
• Cnidarians exhibit metagenesis, i.e., alternation of generation. There are two body forms:
• Polyp: It is fixed and sessile form with mouth and tentacles facing upwards (Cylindrical shaped). It reproduces asexually by budding to form the second body form.
• Medusa: It is free-floating form with mouth and tentacles facing downwards (Umbrella shaped). It reproduces sexually to form polyps. 

EXAMPLES 

A) Only Polyp Forms : Hydra (fresh water polyp), Adamsia (Sea Anemone)

B) Only Medusa form : Aurelia (Jelly fish)

C) Metagesis : Obelia, Physalia (Portugese man of war)