NEETBotanyAnimal Kingdom
What are the two basic body forms of cnidarians?
Options
- APolyp and medusa
- BTentacle and body
- CSessile and free-swimming
- DNone of the above
Correct answer
A. Polyp and medusa
Step-by-step solution
Cnidarians exhibit tissue level of organization and are diploblastic. Cnidoblasts, also known as cnidocytes, contain stinging capsules or nematocysts and are used for anchorage, defense, and prey capture in cnidarians. Cnidarians exhibit two basic body forms called polyp and medusa They have a central gastro-vascular cavity with a single opening, mouth on hypostome. Digestion is extracellular and intracellular. Some of the cnidarians, e.g., corals have a skeleton composed of calcium carbonate. Cnidarians exhibit tw