Most cnidarians are known to produce toxins.In fact,it has been claimed that one particular species produces the most deadly of all toxins on the planet.What feature of this group most likely evolved simultaneously with the development of these toxins?
A)the medusa body form
B)asexual reproduction
C)a slow-moving or sessile lifestyle in the adult
D)diploblastic design
E)bilateral symmetry in the mobile larval forms

Question

Quizplus · Accepted Answer

Cnidarians are either sessile or slow-moving in their adult form, and their toxins are used for defense and prey capture. The development of toxins was likely an evolutionary response to their sedentary lifestyle and a way to protect themselves from predators.

Most Cnidarians Are Known to Produce Toxins