Animal Classification

Question 1

What are the characteristics of an animal?

Answer 1

Eat other organisms 
Multicellular 
Eukaryotic 
Move
Digest food

Question 2

What are vertebrates?

What are invertebrates?

Answer 2

Vertebrates are animals with a backbone

Invertebrates are animals with no backbone

Question 3

What does a backbone do?

Answer 3

A backbone is a long, flexible tube that sends impulses to and from the brain.

Question 4

What do invertebrates have to carry nerve impulses?

Answer 4

Nerve cords

Question 5

What is the difference between an endoskeleton and an exoskeleton?

Answer 5

An endoskeleton is a skeleton on the inside of the animal’s body and an exoskeleton is on the outside of an animals body like a shell.

Question 6

What is radial symmetry?

Answer 6

On an animal with radial symmetry it will be the same o similar if you draw a line anywhere going through the center.

Question 7

What happened in the Precambrian time?

Answer 7

Formation of earth
First single celled life no nucleus 
Single celled life with nucleus
Simple multi celled life
Invertebrates appear

Question 8

What happened in the Paleozoic era?

Answer 8

Fish appear
Land plants appear
Amphibians appear
Reptiles appear

Question 9

What happened in the Mesozoic era?

Answer 9

Mammals and dinosaurs appear
Birds appear
Reptiles evolve

Question 10

What happened in the Cenozoic era?

Answer 10

Modern humans appear

Large mammals appear