Needs of Living Things Warm-up

What did Robert Hooke find, that all living things are composed of?

Compound Microscope

First Microscope

What are living things like?

Living things are organized

Cells

Tissues

Organs

Living things respond

Respond to a stimulus = causes a reaction

homeostasis = balance

Living things use energy

Living things grow and develop

Living things reproduce

What are the basic needs of all living things?

A place to live (shelter, habitat)

Raw materials

Water

Proteins

Fats

Sugars

Gas

Plants need CO2 and animals need O2

What are the needs of plants?

Light

Water

Gas CO2

What are the needs of animals?

Water

Shelter

Food

Air (Gas 02)

http://www.youtube.com/watch?v=j2fRMhYP5n8

Why can’t all organisms survive everywhere?

Animals/Plants are designed to live in a specific

ecosystem

http://www.youtube.com/watch?v=GUY_-LK_lOc

How do changes in the Environment affect the organisms that live there?

The number of animals will increase or decrease.

http://www.youtube.com/watch?v=o_RBHfjZsUQ

How do organisms obtain the materials they need?

Plants

Special parts of the cell absorb the

light energy Chloroplasts (Chlorophyll)

Other parts of the cell take in

carbon dioxide

The roots and leaves absorb water.

Together this produces sugar

Photosynthesis

CO2 + Water = Glucose + Oxygen

What animals eat

Animals

Herbivores - Eat plants

Carnivores - Eat animals

Omnivores - Both

Shelter and water must be available in the ecosystem.