Unit 7- Animal Characteristics (lesson 1-what Is an animal)

How many animal species have been identified on earth?

1.3 million

What is a vertebrate?

An animal with a backbone

What is an invertebrate?

An animal without a backbone

True statements about vertebrates and invertebrates are :

An animal without a backbone is an invertebrate. An animal with a backbone is called a vertebrate.

Why are there so many more invertebrates than vertebrates?

Vertebrates are generally larger and take up more space. Most vertebrate's environments can only sustain a certain number of animals. Most vertebrates can only survive in certain environments.

The major division in the animal kingdom is between animals that have ________ and animals that do not.

a backbone

How can radial symmetry be described?

all body parts arranged around a center point, like a wheel

16) Identify the type of symmetry that each animal has.

asymmetry

17) Identify the type of symmetry that each animal has.

bilateral

The term "phylum" means:

biological classification below kingdom; groups organisms according to body structure

Scientists classify animals based on their internal and external ____________.

body structures

Animalia means:

c) "being which breathes."

Some of the characteristics for an organism to be an animal are:

composed of eukaryotic cells, do not have cell walls, are consumers, not producers, can reproduce, usually through sexual reproduction

All animal cells:

contains a nucleus with genetic material, are eukaryotic

All animals have these in common:

do not have cell walls, are consumers, not producers, can reproduce, usually through sexual reproduction, are multicellular, composed of eukaryotic cells, can eat and digest food, usually able to move from one place to another.

How can asymmetry be described?

does not have a pattern of symmetry

The word animal comes from the Latin word

e) "Animalia"

Which category contains more species; vertebrate or invertebrate?

invertebrate

18) Identify the type of symmetry that each animal has.

radial

How can bilateral symmetry be described?

right and left sides of the body being basically identical

The term "motile" means:

the ability to move from place to place

The study of the structure, habits, classification, and development of all animals is called _____.

zoology