Food webs

• Biologie
• Middelbare school
• vwo
• Leerjaar 3

Eat and be eaten

Food webs and the flow of energy in ecosystems

Trophic levels

What is passed on from one level of the food chain/food web to the next?

1. matter
2. energy
3. matter and energy
4. sometimes matter and sometimes energy

What is a top predator?

1. An animal who kills and eats other animals
2. An animal who kills and eats other animals very efficiently
3. An animal who kills and eats other animals and has no natural predators
4. An animal who kills and eats other animals and plants

A food web shows the flow of matter and energy between all the organisms in an ecosystem

1. True
2. False

The arrows in a food web represent the flow of matter and energy from one level to the next one. In what direction do the arrows point?

1. In the direction of the organism that's being eaten
2. In the direction of the organism doing the eating

An apex predators (e.g. Pisaster) help maintain the stability of ecosystems

1. True
2. False

Producers

Primary Consumers (herbivores)

Secondary Consumers

Tertiary Consumers

Apex predator

D

e

c

o

m

p

o

s

e

r

s

Consumers that only eat plants

Consumers that only eat animals

Consumers that eat plants as well as animals

Organisms that break down the remains of dead organisms

Omnivores

Herbivores

Decomposers

Carnivores