Biology of Humans "The Evolution of Animals"

Earthworms are in the phylum _____.

Annelida

Grasshoppers are classified in the phylum _____.

Arthropoda

Dogs are classified in the phylum _____.

Chordata

Humans are _______.

Homo sapiens

Snails are classified in the phylum _____.

Mollusca

Roundworms are classified in the phylum _____.

Nematoda

Which of these primate groups lives in trees in Central and South America and have nostrils that are wide open and far apart?

New World monkeys

_____ are the oldest known primate group.

Prosimians

Why are annelids, arthropods, and mollusks placed in the same clade?

They are protostomes.

Which of these statements is true of earthworms?

They have a body cavity.

Which of these statements is true of nematodes?

They have a digestive system with two openings.

Which of these statements is true of cnidarians?

They have a nerve net.

Which of these statements is true of sponges?

They have no true tissues.

According to this phylogenetic tree, the animals most closely related to reptiles and mammals are _____.

amphibians

Which of these characteristics is common to both snails and earthworms?

an alimentary system with two openings

Which of these characteristics is shared by both dogs and sea stars?

an endoskeleton

Which of these primate groups is most closely related to hominids?

apes

According to this phylogenetic tree, annelids are most closely related to _____.

arthropods

Echinoderms are _____.

deuterostomes

According to this phylogenetic tree, chordates are most closely related to _____.

echinoderms

As adults, sea stars _____.

exhibit radial symmetry

The primates that spend the most time walking upright are the _____.

hominids

The common ancestor of all these chordate groups EXCEPT the _____ probably had paired appendages.

lampreys

Which of these is the only chordate group that has hair?

mammals

According to this phylogenetic tree, the clade that includes echinoderms and chordates is most closely related to the clade that includes _____.

molluscs

Which of these anthropoid groups consists of primates who are mostly tree dwellers and whose forelimbs and hind limbs are about equal in length?

monkeys

According to this phylogenetic tree, cnidarians are most closely related to _____.

platyhelminths

Molluscs are _____.

protostomes

Cnidarians are in the _____ clade.

radiata

This phylogenetic tree indicates that mammals are most closely related to _____.

reptiles

Nematodes are most closely related to _____.

rotifers

At the phylum level, you are most closely related to a(n) _____.

sea star

Grasshoppers respire via _____.

spiracles and tracheae

Which of these is a characteristic of sea stars?

tube feet

Which one of these chordate groups lacks a post-anal tail and a notochord as adults?

tunicates