Question

question 5
bryozoans are microscopic aquatic invertebrates that live in colonies. some colonies of these organisms are attached to rocks and others are in jelly blobs. scientists have studied the fossils of these organism and found that bryozoans remained the same for 40 million years, then there was burst of change. then, fossil evidence showed that the evolution slowed down again.
question 6
which type of evolution, co - evolution, divergent, adaptive radiation, convergent, or punctuated equilibrium is best represented by these two organisms? justify your answer.

Explanation:

Bryozoans' evolution had long periods of stasis (remaining same for 40 million years) followed by a burst of change. Punctuated Equilibrium is defined as evolution with long stable periods (equilibrium) interrupted by short, rapid change (punctuation). This matches the fossil evidence of Bryozoans: stable for 40 million years, then a burst of change, then slow again.

Answer:

Punctuated Equilibrium