Vocab
The main bone, made up of many small bones joined together, that runs along the middle of the back of some animals.
backbone
What are feathery structures on the sides of the heads of fish that allows them to breathe?
gills
What does "molt" mean?
to shed an animal's outer covering
What is a "behavior"?
The way a living thing acts.
a behavior an animal is born with and does not need to learn
instinct
True or false: Amphibians live on land after hatching from an egg, but adults can live in the water.
True or false: Animals without backbones make up most of the animals in the world.
true
What is a "response"?
a behavior caused by a stimulus
one large group of animals with backbones that live part of their lives in water and part on land
amphibians
True or false: Reptiles could live in hot, dry deserts; in warm, wet, tropical rain forests; and in many other environments.
true
Scientists group all animals into these two large groups.
Animals with a backbone and animals without a backbone.
What is a "reflex"?
a simple, automatic behavior
a hard outer covering that supports and protects some animals without backbones
exoskeleton
Which animals are the only animals without backbones that can fly?
insects
Name the three parts of an insect.
head, thorax and abdomen
What is a "stimulus"?
the cause of a behavior
an animal with a backbone that usually has hair on its body and feeds milk to its young
mammal
______________ is the largest living mammal.
Blue whale
List three ways all animals are alike.
1. They produce young.
2. They find their own food.
3. They move from place to place on their own.
How do young animals learn many of their behaviors?
By watching their mothers or other animals.