Exam preparation

What do the arrows in a food web show?

• The direction they point has no relevance.

• The arrows indicate an increase in the size of the organism.

• Who eats who.

• The direction of energy and nutrients.

What organism is the secondary consumer?

• Plant

• Mouse

• Owl

• Beetle

What is a producer?

• An organism that eats other organisms

• the sun

• An organism that creates its own food

• A fungus

What is a key species?

• A species in which the food web will collapse if it is removed.

• The species which holds the key.

• A herbivore.

• The building block of a food chain.

An invasive species is...

• Aliens!!

• A species which has been introduced to an ecosystem and damages the environment and food chain.

• A species which has been introduced to an ecosystem and is included in the food chain.

• A pest.