Aves Review ABHS

Birds are known to be the most diverse _____.

• terrestrial vertebrates

• aerial vertebrates

• animals

• mammals

_____ young are born completely dependent on their parents. The parents provide nutrition to the young and teach them to fly.

• Precocial

• Altricial

• Ignorant

• Intellegent

All of the following adaptations can be observed in birds. Which one is not unique characteristic among the birds?

• Wings/Beak

• Hollow bone structure

• Claws

• Feathers

_____ is a feature that all birds, reptiles, and mammals have in common.

• Teeth

• Feathers

• Amniotic eggs

• Hair

Flight and _____ are the two main functions for feathers on birds.

• Insulation

• Attractiveness

• Camouflage

• Protection

_____ young are born fully independent from their parents. They are active as soon as they hatch and can swim, walk, and feed themselves.

• Intellegent

• Ignorant

• Precocial

• altricial

How many days are required for the development of a bird from fertilization to hatching?

• 13

• 21

• 42

• 67

The _____ gland is a gland that is located near the base of the tail and secretes an oily substance that aids in waterproofing the feathers of birds.

• down

• contour

• thyroid

• preen

The organism, _______, is thought by some to be the link between reptiles and birds while others believe that it is a genetic dead end.

• Ichthyornis

• Archaeopteryx

• Hesperornis

• Pterodactyl

A(n) _____ is a scale-like structure at the end of a hatchlings beak that helps it break out of the egg shell.

• Spike

• brood patch

• egg tooth

• scale