Unit A Chapter 2

Name _________________________
Unit A Chapter 2 “Animals”
Science Study Guide
Chapter 2 Vocabulary :
1. shelter- A place or object that protects an animal and keeps it safe.
2. migrate- To move to another place.
3. hibernate- To rest or sleep through the cold winter.
4. metamorphosis- A change in the body form of an organism.
5. inherited trait – A characteristic that comes from both of your parents.
6. learned trait- Something you are taught or learn from experience.
7. tissue- A group of cells that are alike.
8. organ- A group of tissues that work together.
9. system- A group of parts that work together.
10. vertebrates-The name given to animals with a backbone.
11. invertebrates- The name given to animals with no backbone.
12. fish- An animal that gets oxygen through gills and lives its whole life in water.
13. amphibian- An animal that spends part of its life in water and part of its life on
14. reptile- An animal that lives mostly on land.
15. bird- An animal that has a beak, two legs, two wings, and feathers.
16. mammal- An animal with hair or fur and feeds its young milk.
Lesson 4 Concepts:
1. All animals need food, water, air, and a place to live.
2. Food gives an animal energy.
3. Animals cannot make their own food. They get the food they need from eating
other living things. Animals are called consumers.
4. Animals need air because it contains oxygen.
5. Many animals take in oxygen through lungs. Some animals like fish breathe
through gills.
6. Animals are made mostly of water. Water has several important jobs. It helps the
body use food as fuel. It helps the body get rid of wastes. It helps some animals
stay cool.
7. Animals use shelters to stay safe.
8. Animals have inner needs. Signals inside an organism’s body tell it when to do
such things as eating, drinking, and breathing.
9. Living things respond to changes in their environment. Some animals migrate to
warmer places in the winter while others hibernate through the winter.
Lesson 5 Concepts:
1. There are four stages in an animal’s life cycle: Birth, Growth and Change,
Reproduction, and Death.
2. Some animals go through life cycle changes called metamorphosis. Butterflies
and frogs are examples of animals which go through metamorphosis.
Les. 5 Concepts Continued:
3. Most animals come from eggs. Some offspring such as frogs, chickens, and turtles
hatch from eggs outside the female’s body. Other offspring such as dogs and
bears grow and develop inside the female’s body.
4. Inherited traits come from an animal’s parents. Examples would be hair color or
eye color.
5. Learned traits are things you are taught or learn by doing. Examples are riding a
bike and speaking a language.
Lesson 6 Concepts:
1. Cells are the building blocks of all living things. A group of cells that are all
alike form tissue. A group of tissues that work together form an organ. The skin
is the largest organ. Some organs work together in body systems. Examples of
body systems are the digestive system, the nervous system, and the muscular
2. Different animals have different kinds of parts that protect and support. Examples
are skin, scales, fur, feathers, and wool.
3. Body parts that move and those that collect information help animals survive.
Lesson 7 Concepts:
1. Animals can be grouped by whether or not they have a backbone. Those with a
backbone are vertebrates. Those without a backbone are invertebrates. Most
animals are invertebrates.
2. Animals with a backbone are placed in five groups: fish, amphibians, reptiles,
birds, and mammals.
Fish: They are covered with scales and a slimy coating
They get oxygen through gills.
They are cold-blooded.
Amphibians: They are cold-blooded.
They spend part of their life on land and part in water.
Reptiles: They are cold-blooded.
Most live only on land.
They have waterproof skin.
Birds: They have a beak, feathers, two wings, and two legs.
They lay eggs that have shells.
Mammals: They have hair or fur.
They feed its young milk.
They are warm-blooded.
They have live babies.