Yr 7 Biological Science Review 1

What does an organism's habitat refer to:

• The place where it lives

• The place where it is at a point in time

• The place where all abiotic factors are suited for survival

• A place where it hunts for food

What does the term adaptations mean?

• Living factors that influence where an organism lives

• Non-living factors that influence where an organism lives

• Features of an organism that help it survive in its environment

• Organisms that inhabit a specific region

What is the first source of energy for all of the organisms in a food web?

• Soil

• Water

• Green plants

• Sun

Describe a decomposer organism:

• An animal that eats another animal

• A plant that loses its leaves in winter

• An organism that breaks down organic matter

• An animal that uses sound to communicate

Which of these human activities would have a negative impact on a natural environment:

• Clearing forests and replacing them with exotic trees

• Removing grazing cattle from a natural woodland

• Replanting Eucalypt trees

• Reintroducing koalas into a Eucalypt forest

Which of these human activities has a positive effect on food webs?

• Opening up bushland for recreation activities

• Removing introduced predators from an area

• Overfishing particular fish species

• Introducing exotic species

What phylum does this invertebrate belong to:

It lives in water and has stinging cells to catch food. Food goes into its body through the same opening that waste comes out.

• Cnidarian

• Annelid

• Nematode

• Porifean

What phylum does this vertebrate belong to:

It lives in water and its skeleton is made of cartilage.

• Agnatha

• Aves

• Amphibians

• Chondrichthyes