Science Chapter 3

What is the main source of energy for plants

• energy

• seeds

• sunlight

• water

Animals are called consumers because they

• get energy from other plants and animals

• get minerals from the soil

• can break down nutrients in the soil

• use light energy from the sun

What happens to the minerals and nutrients that are released by decomposers?

• they disappear completely

• they form into sugars

• they reproduce to form more minerals and nutrients

• they are put back into the soil, water and air

Which of the following is a nonliving part of an ecosystem?

• sunlight

• frog

• squirrel

• rock

If the plant population increases in a food web what will happen to the herbivores and carnivores?

• they will increase

• they will decrease

• they will stay the same

• they will die

Which of the following do plants NOT need to survive?

• soil

• sunlight

• animals

• energy

If an animal is a herbivore, then you know about

• how long the animal lives

• what the animal eats

• where the animal lives

• how the animal reproduces

Photosynthesis cannot happen at night because..

• it is too cold

• plants sleep at night

• there is not enough sunlight

• there is not enough carbon dioxide in the air

The way in which energy is transferred from one organism to another is called a

• food chain

• food web

• organism

• population

Check off ecosystem or habitat:

Where plants and animals interact

• ecosystem

• habitat