Chapter 2

Question 1

Citeria

Answer 1

Chosen standards used to make decisions

Question 2

Body plan

Answer 2

The overall shape or layout of an organisms body

Question 3

Bilateral system

Answer 3

A body plan in which the right and left halves of the body mirror each other

Question 4

Radial Symmetry

Answer 4

A body plan in which parts are arranged in a circular pattern around the center

Question 5

Vertebrate

Answer 5

An animal with a backbone

Question 6

Invertebrate

Answer 6

An animal without a backbone

Question 7

Appendage

Answer 7

A smaller body part that extends from the main body part

Question 8

Herbivore

Answer 8

An organism that consumes only plants

Question 9

Carnivore

Answer 9

An organism that consumes only other animals

Question 10

Omnivore

Answer 10

An organism that consumes plants and animals

Question 11

Stimulus

Answer 11

Anything that causes an organism to respond

Question 12

Habitat

Answer 12

A place where an animal lives, finds its food, and is sheltered

Question 13

Biotic factor

Answer 13

A living part of a habitat

Question 14

Abiotic factor

Answer 14

A nonliving part of a habitat

Question 15

Nocturnal

Answer 15

Active at night

Question 16

Classification system

Answer 16

An arrangement of organisms into groups according to criteria

Question 17

Taxonation

Answer 17

A scientist who names and organisms living things according to a classification system

Question 18

Classify

Answer 18

To arrange things into groups by their similarities