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) diploblastic design
D) bilateral symmetry in the mobile larval forms
E) a slow- moving or sessile lifestyle in the adult

Question

Quizplus · Accepted Answer

The evolution of potent toxins in cnidarians is closely associated with their predominantly slow-moving or sessile adult lifestyle. These toxins serve as a means of defense against predators and as a mechanism to capture prey, compensating for their lack of mobility.

Most Cnidarians Are Known to Produce Toxins