B17.1 Feeding relationships

Question 1

What are primary consumers?

Answer 1

The animals that eat the producers

Question 2

What are the secondary consumers?

Answer 2

The animals that eat the primary consumer

Question 3

What are tertiary consumers?

Answer 3

Animals that eat secondary consumers

Question 4

What are the problems of eating plants/algae?

Answer 4

Cellulose is difficult to digest - have to find enough plants to eat to gain all the nutrients

Question 5

How can feeding relationships be expressed?

Answer 5

By a food chain - producers are always on the left

Question 6

What is a producer?

Answer 6

An organism that makes its own food usually by photosynthesis

Question 7

What else can effect the prey/ predator numbers?

Answer 7

Prey numbers may be affected by factors other than predators:
• Weather conditions, disease, or competition affecting prey’s food supply;
• disease affecting prey;
• population balance between different types of prey for a particular predator.
Predator numbers may be affected by factors other than prey:
• disease affecting predator;
• competition balance between different types of prey.