Science Ch. 9 Vocab

Question 1

The condition in which an organism’s internal environment is kept stable on spite of changes in the external environment

Answer 1

Homestasis

Question 2

An animal with a backbone

Answer 2

Vertebrate

Question 3

An animal without a backbone

Answer 3

Invertebrate

Question 4

A body plan in which any number of imaginary lines that all pass through a central point divide the animal into two mirror images

Answer 4

Radial symmetry

Question 5

A body plan in which a single imaginary line divides the body into left and right sides that one mirror images of each other

Answer 5

Bilateral symmetry

Question 6

An animal whose body temperature is determined by the temperature of its environment

Answer 6

Ecthotherm

Question 7

An animal whose body temperature is regulated by the internal heat the animal produces

Answer 7

Endotherm

Question 8

A vertebrate whose body temperature is determines by the temperature of its environment and that lives its early life in water and itd adult life on land.

Answer 8

Amphibian

Question 9

A vertebrate whose temperature is determined by the temperature of its environment, that has lungs, and scally skin, and that lays eggs on land.

Answer 9

Reptile

Question 10

A vertebrate whose body temperature is regulated by its internal heat, lays eggs, and has feathers and a four chambered heat

Answer 10

Bird

Question 11

A vertebrate whose body temperature is regulated by its internal heat, and that has skin covered with hair or fur and glands that produce milk to feed its young

Answer 11

Mammal