Vocab Lesson 4

Question 1

Notochord

Answer 1

A flexible rod that supports a chordate’s back just below the nerve cord.

Question 1

Chordates

Answer 1

An animal that has a notochord, a nerve cord, and throat pouches at some point in its life.

Question 2

Vertebra

Answer 2

The bones that make up the backbone of an organism. In humans, one of the 26 bones that make up the backbone.

Question 3

Ectotherm

Answer 3

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

Question 4

Endotherm

Answer 4

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