Year 7 Science: Relationships Worksheet
Student Name: _______________
1. Identify each of the following relationships as:
1.
2.
3.
4.
5.
competition,
predator–prey,
mutualism,
parasite–host or
commensalism.
1. Cats hunt and eat mice. ______________________________
2. Aphids suck the sap from a rose bush. ___________________________
3. Male kangaroos fight each other for the attention of females. _____________
_____________________________
4. Termites contain a fungus in their stomach that digests the wood they eat. The
fungus cannot live anywhere else. Without the fungus, the termites would not
survive. __________________________________
5. Lampreys are fish that attach themselves to sharks. They feed on scraps of the
shark’s food and the shark is unaffected. _____________________________
2. List three examples of predators and then match them to their prey. Use a chart such as
below:
Predators
Their Prey
1
2
3
1. Using the above examples you found, suggest structural, physiological and behaviour
features that may assist:
1. predators in obtaining food (e.g. webs, teeth, senses, behaviour)
2. prey in avoiding being eaten (e.g. camouflage, mimicry, behaviour,
chemicals).
3. In the interaction between a clownfish and a sea anemone, which is the commensal? ______
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4. Some clovers (Trifolium) produce cyanide. Find out how this may protect them against
being eaten.
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5. Find examples of ways that Australian plants try and protect themselves from being eaten by
herbivores.
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