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
