4) Which of the following is a characteristic of ALL mammals? A) notochord B) de

Question

4) Which of the following is a characteristic of ALL mammals?

A) notochord

B) deuterostome

C) coelomate

5) Which of the following is NOT a principal feature seen in chordates (such as humans)?

A) pharyngeal pouches

B) postanal tail

C) protostome development

D) notochord

6) What species of human first came about about 1.5 million years ago, and successfully spread throughout Africa, Europe, and Asia before their extinction less than half a million years ago? They are also known for their arched feet and bipedal walking (meaning that they only walked up-right, and for very long distances).

A) Homo habilis

B) Homo sapiens

D) Homo neanderthalensis

C) Homo erectus

Explanation / Answer

Answer 4: Coeloomate

coelom is the body cavity , present in all mammals. all the organs are present insifde this coelom.

Answer 5:postanal tail

This feature is NOT among the principle features of humans.

Answer 6: Homo habilis

They existed around 1.5-2 million years ago throughout Africa, Europe and Asis. These had long arms and legs.

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