Year 7 Science · Unit 1 · Lesson 11

Ecosystems — Biotic and Abiotic

Foundation Worksheet

Name
Date
Class

Learning Goals

Warm Up

Sort it!

Below are 12 things found in the Great Barrier Reef. Write each item into the correct category box — Biotic (living or once-living) or Abiotic (non-living).

clownfish coral polyp sea turtle sunlight water temperature seaweed saltwater ocean currents parrotfish dissolved oxygen starfish pH of seawater

Biotic (living / once-living)

Abiotic (non-living)

Your Turn

True or False? Fix the false ones

Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.

The soil is a biotic factor because it supports plant life.

Correct it:

T
F

A population is all the organisms of one species living in an area at the same time.

Correct it:

T
F

Abiotic factors never affect biotic factors — the two groups are completely separate.

Correct it:

T
F

A limiting factor is an abiotic factor that controls which species can survive in an area.

Correct it:

T
F

Bacteria are not part of an ecosystem because they are too small to matter.

Correct it:

T
F

Show What You Know

1. Name TWO biotic factors and TWO abiotic factors found in a Sydney Harbour ecosystem.

Recall 2 marks

2. What is the difference between a community and an ecosystem? Use the words "biotic" and "abiotic" in your answer.

Recall 2 marks

Wrap Up

In one sentence, what was the main idea of this lesson?

HSCScience · Year 7 Science · Unit 1 · Lesson 11 · Foundation Worksheet