Exam 32: Deuterostome Animals

Primates include the prosimians (lemurs and lorises), New World monkeys, Old World monkeys, gibbons, orangutans, African apes, and humans.Which of the following statements about the primates is false?

In an amniote egg, the contents of the _______ become smaller in size as the embryo grows.

An adaptation to a carnivorous lifestyle in snakes is

What are the distinguishing characteristics of deuterostomes? Are these all exclusive to deuterostomes? What is the evidence for monophyly of the group we call deuterostomes?

Pharyngeal slits are not a chordate synapomorphy because they

Which trait is unique to mammals?

Living deuterostomes comprise three clades: the echinoderms, the chordates, and the

A group that is often considered among the vertebrates but is thought by some scientists to be a sister group to the vertebrates includes the _______, which produces large amounts of slime as a defense mechanism, has three small accessory hearts, and does not possess stomach or jaws.

You find a fossil deuterostome in marine deposits, that has several feathery arms at the end of a long stalk.The stalk is composed of tiny discs that resemble a five-pointed star in cross section.This animal is likely a

Birds are called "living dinosaurs" because

Which statement about coelacanths is false?

Which statement about the amniote egg is false?

Members of Homo neanderthalensis

The first hominin to leave Africa less than 1.6 mya was _______, most likely followed much later by _______.

Neoteny in primates includes which of the following traits? (Note: At birth, human and chimpanzee skulls have similar proportions.)

Refer to the figure showing an acorn worm (top) and pterobranchs (bottom). Which of the following is a feature or features of pterobranchs but not of acorn worms?

Refer to the figure showing a phylogenetic tree of hominins. Suppose there are 50 ancestral traits (not derived) present in Homo erectus.According to the figure, which of the following pairs would be equally likely to possess these same 50 traits?

Primates likely descended from small, arboreal, _______ mammals.

What name is given to the group consisting of echinoderms and hemichordates?

Which chordate features in the sea squirt (tunicate) larva do not appear in the adult sea squirt?