Food Webs & Energy Pyramids

What is the initial source of energy for any food web?

the sun

In this food web, what organisms give their energy to the snake?

rabbit and shrew

What happens to the amount of energy as it moves through a food web? (increase or decrease)

it decreases

At which trophic level the food web is the most energy available?

producers level

What do the arrows show in the food web?

the flow of energy from organism to organism

What are the organisms that breakdown dead plants and animals returning basic chemicals to the environment?

decomposers

A green plant that makes its own food is called a_____.

producer

In an Energy Pyramid, how much energy is transferred from one level to the next?

10%

Organisms that only eat plants are called __________.

herbivores

Organisms that eat plants and animals are called __________.

omnivores

In this food web, if the snake population dies out, which organism would be affected first?

kite

Another word for producer. Organisms that make their own food

Autotroph

Another word for consumer. Organisms that cannot make their own food.

Heterotroph

Has the most energy and is made up of producers

The base/bottom of an energy pyramid

Eats producers (either omnivores or herbivores)

Primary Consumer

Eats 1st consumers (either omnivores or carnivores)

Secondary Consumer

Eats 2nd consumers (typically carnivores, possibly omnivores)

Tertiary Consumer

The amount of energy as you go up an energy pyramid. (Goes up or down)

Goes down

Each step in a food chain or food web or energy pyramid

Trophic Level

In an energy pyramid, 90% of energy is lost to the environment as ___________

Heat

process of converting light energy to chemical energy

photosynthesis

The trophic level (feeding level) of the mountain lion

secondary, tertiary and quaternary consumer

The trophic level (feeding level) of the shrew

secondary consumer

The trophic level (feeding level) of the squirrel

primary consumer