Question

multiple select question
select all that apply
select all of the characteristics of cnidarians.
flagellated cells called collar cells
stinging cells called cnidocytes
true tissues
radial symmetry
gastrovascular cavity
three germ layers

Explanation:

• Cnidarians have stinging cells called cnidocytes which are used for defense and capturing prey.
• They have true tissues (diploblastic - two germ layers: ectoderm and endoderm).
• They exhibit radial symmetry.
• They possess a gastrovascular cavity which is involved in digestion and circulation.
• Flagellated collar cells (choanocytes) are characteristic of sponges.
• Cnidarians have two germ layers (not three).

Answer:

• stinging cells called cnidocytes
• true tissues
• radial symmetry
• gastrovascular cavity