Unit 2 Practice Test 1

This passage explains about ​ (a)  

• mammals.
• birds.
• fish.
• amphibians.

Which is the best spelling of a word that means without end? ​ (a)  

• bottomless
• botomles
• bottommles
• bottommless

What is the correct spelling of a word that means without breathing? ​ ​ (a)  

• breathles
• breathless
• breatheless
• beathles

Is love an abstract or concrete noun? ​ (a)  

• abstract
• concrete

Is protection an abstract or concrete noun? ​ (a)  

• concrete
• abstract

Is animal a concrete or abstract noun?​ (a)   o

• concrete
• abstract

Scientists study how living things are alike and different and sort, or classify, them into large groups called kingdoms. There are five kingdoms of living things. You have just learned about two—the plant kingdom and the animal kingdom. (You will learn about the other kingdoms in later grades.) The living things in each kingdom can then be sorted into more specific groups.

Scientists study how living things are alike and different and sort, or classify, them into large groups called kingdoms. Is this sentence a key idea or key detail? ​ (a)  

• key idea
• key detail

The backbone or spine wraps around and protects an important part of your body called the spinal cord. The spinal cord is a bundle of nerves. Messages travel up and down your spinal cord from your brain to other parts of your body. This is the way that your brain sends signals telling the other parts of your body what to do.

Messages travel up and down your spinal cord from your brain to other parts of your body.

This is an example of a ​ (a)  

• key detail.
• key idea.

The backbone or spine wraps around and protects an important part of your body called the spinal cord. The spinal cord is a bundle of nerves. Messages travel up and down your spinal cord from your brain to other parts of your body. This is the way that your brain sends signals telling the other parts of your body what to do.

The spinal cord is a bundle of nerves.

This is an example of a ​​ (a)   k

• key idea
• key detail.

Some interesting invertebrates live in the sea. Lobsters, shrimp, and crabs do not have a backbone. The giant octopus is an invertebrate as well. Have you ever seen a jellyfish or a starfish? They are also invertebrates. So, these animals do not have a backbone or spinal cord.

The giant octopus is an invertebrate as well.

This is an example of a ​ (a)  

• key idea.
• key detail.