Exam 15: Animal Evolution

Which of the following is NOT among the events that may have led to the explosion of animal diversity 542 - 488 million years ago?

Which of the following physical features make it possible for amniotes to be completely terrestrial?

This animal has a small coelom,soft unsegmented body,and a radula.This animal is ___.

Reef-building polyps get their sugars from mutualistic

Classification.Answer the questions in reference to the five animal groups listed below. a.sponges b.cnidarians c.flatworms d.roundworms e.annelids -Members of this group have a pseudocoelomic body cavity.

Which of the following describe both tunicates and lancelets?

Which of the following was the most likely food source for first terrestrial tetrapods?

This arthropod has a single pair of antennae,three pairs of legs,and a chitin cuticle.This arthropod is ___.

Amphibians are completely dependent on an aquatic environment for

This animal has radial symmetry,a gastrovascular cavity,and the same opening is for the entry of food and expulsion of waste.It is ___.

Match the hominin with its description. a.Australopithecus afarensis b.Homo erectus c.Homo sapiens d.Homo neanderthalensis e.Homo habilis -the last population of this species went extinct 28,000 years ago

Which of the following animals lack a "true" coelom?

This animal is radially symmetric,has nematocysts,and cnidocytes.This animal is ___.

This animal is acoelomate,hermaphroditic,and adds new segments to its body as it grows.This animal is ___.

The tube feet of sea stars are used primarily for

Four of the five answers listed below are anthropoids.Select the EXCEPTION.

Among the following,bats are most closely related to

Of the following invertebrate groups,the group most closely related to the chordates is the

Which feature of Homo habilis was apelike?

The most diverse of the mammals are the