Unit 10

Question 1

Scales

Answer 1

Keratin structures produced by the epidermis that overlap and lie on the surface of the skin

Question 2

Scutes

Answer 2

Bone-like structures produced by the dermis that do not overlap and lie on the surface of the skin

Question 3

Chorion

Answer 3

The outer membrane of an egg that is involved in gas exchange with the environment

Question 4

Amnion

Answer 4

The inner membrane of an egg that contains fluid to provide protection from mechanical shock, abrasion (rubbing) and dehydration of the embryo

Question 5

Allantois

Answer 5

The membrane of an egg that stores waste from the embryo and facilitates respiration

Question 6

Venom

Answer 6

A toxin or poison that is produced to be injected into prey or an enemy by a bite or a sting

Question 7

Incubation

Answer 7

The process of keeping eggs warm

Question 8

Plumage

Answer 8

All the feathers of a bird including their types, coloration, and arrangement

Question 9

Diphyodonty

Answer 9

The condition in which a set of primary teeth is later replaced by a set of secondary teeth

Question 10

Placenta

Answer 10

A structure inside the mother that provides developing young with oxygen and nutrients and removes carbon dioxide and waste