Touching a jellyfish can be a very painful experience whereas touching a comb jelly is not painful.Why is there a difference?
A) Nematocysts in ctenophores lack venom.
B) Ctenophores have very reduced nematocysts that cannot penetrate human skin.
C) Ctenphores do not possess nematocysts.
D) Ctenophores only use nematocycts for feeding,not for defense.
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