Unit 4 Clicker

Question 1

Which animal group possesses a braincase but no vertebrae?

Answer 1

Hagfish (Myxini)

Question 2

Which is NOT one of the five characteristics possessed by chordates during at least some part of their development?

Answer 2

spinal column (= vertebrae, “backbone”, “spine”)

Question 3

The earliest chordates used pharyngeal gill slits for _____

Answer 3

Feeding

Question 4

The scales of sharks are composed of ______

Answer 4

dentin

Question 5

Which is not true of pseudocoelomates

Answer 5

They are diploblastic

Question 6

Which is false

Answer 6

nematodes lack longitudinal muscles (circular muscles)

Question 7

In what way are nematodes different from arthropods

Answer 7

Nematodes have a pseudocoelom as their sole body cavity

Question 8

Which roundworm parasites infect their definitive host via a mosquito vector

Answer 8

Heartworm in dogs

Question 9

In adult arthropods, the predominant (most obvious) body cavity is called a ____

Answer 9

Hemocoel

Question 10

Which phylum is capable of cryptobiosis, with dessicated individuals forming a resistant “tun”

Answer 10

Tardigrada

Question 11

In adult arthropods, the predominant (most obvious) body cavity is called a ____

Answer 11

Hemocoel

Question 12

The scientific term for arthropod molting is _____.

Answer 12

Ecdysis

Question 13

The regionalization and fusion of arthropod metameres (segments) is called ____.

Answer 13

Tagmosis

Question 14

Spiders, scorpions, mites and ticks are in the arthropod class _____

Answer 14

Arachnida

Question 15

Crustaceans typically have ____ of antennae

Answer 15

two pairs

Question 16

Birds vocalize using their _________

Answer 16

Syrinx

Question 17

The body temperature of ____ is regulated by the
environment, whereas the body temperature of ___ is
regulated metabolically

Answer 17

ectotherms; endotherms

Question 18

Tetrapods evolved from an ancestor resembling a _______ In a group known as _______

Answer 18

Lobe-finned bony fish; sarcopterygians

Question 19

Amphibians have a ___- chambered heart

Answer 19

3

Question 20

The epidermal scales of reptiles are composed in part of

_____

Answer 20

keratin

Question 21

Mammals most recently evolved from which ancestral lineage

Answer 21

Synapsida

Question 22

Vertebrae are absent in _____

Answer 22

Hagfish

Question 23

An amniotic egg is lacking in ______

Answer 23

Amphibians

Question 24

The extinction of dinosuars allowed for the radiation (“rise”) of _____

Answer 24

mammals

Question 25

T/F Centipedes are carnivorous predators;

millipedes are herbivorous

Answer 25

True

Question 26

Which is not in the Division Endopterygota (holometabolous)

Answer 26

Odonata (dragonflies; hemimetabolous)

Question 27

Which has hemimetaboulous development?

Answer 27

Orthoptera (crickets, grasshoppers)

Question 28

Which has an eversible stomach?

Answer 28

Echinodermata

Question 29

Insects have ___ pair(s) of antennae and ___ pairs of walking legs

Answer 29

1; 3

Question 30

Insect exretory organs

Answer 30

Malpighian tubes

Question 31

____ flight muscles move an insect’s wings, whereas ____ flight muscles move an insect’s body wall

Answer 31

Direct; indirect

Question 32

Individuals that live in eusocial colonies like termites and ants tend to ______

Answer 32

Be closely related

Question 33

Flutterbys” and moths belong to the insect order ____.

Answer 33

Lepidoptera

Question 34

Termites belong to the insect order ____.

Answer 34

Blattodea

Question 35

Modified wings called halteres are found in ____

Answer 35

Diptera

Question 36

Echinoderms are

Answer 36

enterocoelous & deuterostomes

Question 37

Tube feet assist with locomotion in all echinoderm

groups except for __________

Answer 37

brittle stars & sea lilies

Question 38

Aristotles Lantern is the jaw mechanism found in ____

Answer 38

sea urchins

Question 39

Respiratory trees are found in the ________

Answer 39

Holothuroidea (sea cucumbers)

Question 40

Echinoderms lack _____

Answer 40

a brain

Question 41

Echinoderms possess a unique internal network of canals called a _____ system

Answer 41

water-vascular

Question 42

Most echinoderm body plans have ______ symmetry.

Answer 42

Pentamerous