Chapter 24+ (Protists to Animals)

Question 1

amphibian

Answer 1

means “double life”, a chordate that lives in water as larvae but on lads as adults, has moist skin with mucus glands and lack scales or claws

Question 2

arthropods

Answer 2

a phylum of animals that are invertebrates and have segmented body and joint appendages, with a hard exoskeleton containing chitin and also bilateral symmetry; has book lungs and tracheal tubes

Question 3

bilateral symmetry

Answer 3

body plan in which a single imaginary line can divide the body into left and right sides that are mirror images of each other

Question 4

cnidarians

Answer 4

radically symmetrical, soft bodied animals found in aquatic habitats; includes jellyfish or corals

Question 5

exoskeleton

Answer 5

external skeleton; tough external covering that protects and supports the body of many invertebrates

Question 5

fishes

Answer 5

aquatic vertebrate animals that have gills but lack limbs with digits (like fingers or toes); a chordate and ectotherms

Question 5

endoskeleton

Answer 5

internal skeleton; structural support system within the body of an animal

Question 6

insects

Answer 6

an arthropod; animals with exoskeletons and jointed legs and segmented bodies

Question 7

invertebrates

Answer 7

animal that lacks a backbone, or vertebral column

Question 8

mammals

Answer 8

animals in the class Mammalia that have hair and mammary glands (produce milk for young); four chambered hearts and are endotherms (warm blooded)

Question 9

marsupials

Answer 9

animals (mammals) that bear young that usually complete their development in an external pouch; includes opossums

Question 10

monotremes

Answer 10

mammals of the order monotremes; lay eggs instead of bearing live young, includes platypus

Question 11

oviparous

Answer 11

producing eggs that develop and hatch outside the maternal body (eggs hatch outside mother)

Question 12

ovoviviparous

Answer 12

producing eggs that develop within the maternal body and hatch within or immediately after release from the parent; includes various fish and reptiles (sharks)

Question 13

placental mammal

Answer 13

a mammal that completes embryo development inside the mother, nourished by an organ called the placenta; placenta is a vascular organ that facilitates the exchange of nutrients and wastes between the blood of the mother and fetus

Question 14

radial symmetry

Answer 14

body plan in which any number of imaginary planes drawn through the center of the body could divide it into equal parts

Question 15

reptiles

Answer 15

any of a group of cold blooded air-breathing vertebrates that usually lay eggs and have skin covered in scales or bony plates

Question 16

vertebrates

Answer 16

animal that has a backbone