Ch. 1 Sec. 1What is an Animal?

OBJECT ANIMAL NOT ANIMAL REASON

1.

2.

3.

4.

5.

6.

7.

8.

ACTIVITY-ANIMAL OR NOT pg. 6

*Think It Over:

Use your notes about each organism to write a definition of the term “animal”.

- What Is an Animal?Structure of Animals

adaptationadaptation• structure or behavior that allows an organism to survive in its environment or reproduce

Opossum playing dead

adaptationadaptation

Functionsof

Animals

1.Obtaining

food & oxygen

2.Keeping

conditions stable

3.Movement

4. Reproduction

1. Obtaining food & oxygen

•Animals can not make own food

•Eat other organisms

The predator-prey relationship

Tooth Shape Helps to Determine Diet

Describe

the shape

of the teeth.

What do

you think

it eats?

Tooth Shape Helps to Determine DietDescribe

the shape

of the teeth.

What do

you think

it eats?

Tooth Shape Helps to Determine Diet

Describe

the shape

of the teeth.

What do

you think

it eats?

Tooth Shape Helps to Determine Diet

Describe

the shape

of the teeth.

What do

you think

it eats?

2. Keeping conditions stable• Maintain stable environment within their bodies

Dogs keep cool by panting.

3. movement

4. reproduction-most reproduce

sexually

• sexual reproduction= process by which a new organism develops from joining of 2 sex cells (sperm & egg)

+

• joining of sperm + egg

+

• asexual reproduction process by which single organism produces new organism identical to itself

- What Is an Animal?Classification of Animals• This

branching tree shows how the major animal groups are related.

Biologists classify

animals into 35 major

groups called phyla

(phylum).

classified by:1.body structure

2.how they develop

3.DNA

human embryo

fish embryo

DNA

invertebrateinvertebrate• no backbone• 97% animals

vertebratevertebrate• has backbone

Guess the Guess the Covered Covered

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phyla (phylum)phyla (phylum)

biologists classify biologists classify animals into 35 animals into 35

major groups calledmajor groups called

invertebrateinvertebrate

animal that does animal that does not not have a backbonehave a backbone

basic unit of basic unit of structure & function structure & function

in animalsin animals

cellcell

Joining of an Joining of an egg cell & egg cell & sperm cellsperm cell

fertilizationfertilization

adaptationadaptation

characteristic that helps characteristic that helps an organism survive in an organism survive in

its environment or its environment or reproducereproduce

biologists classify biologists classify animals according to animals according to 1.____ 2.____ 3.____1.____ 2.____ 3.____

1. body structure 2. how they develop 3. DNA

animal that animal that doesdoes have a backbonehave a backbone

vertebrate

Process by which a single Process by which a single organism produces a new organism produces a new organism identical to itselforganism identical to itself

asexual asexual reproductionreproduction

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