Key area 4- Energy in ecosystems

Question 1

What is a pyramid of numbers?

Answer 1

A diagram of total numbers of organisms at each stage of a food chain

Question 2

What is a pyramid of energy?

Answer 2

A diagram of the total energy contained within each stage of the food chain

Question 3

State 3 ways energy can be lost in a food chain

Answer 3

Heat, Undigested material, Movement

Question 4

What is a food chain?

Answer 4

A chain that shows the linear flow of energy

Question 5

What is a food web?

Answer 5

A web which shows the flow of energy between interconnected food chains in an ecosystem

Question 6

What is a small quantity of energy used form that has been lost?

Answer 6

Growth

Question 7

State 2 reasons why pyramid of numbers can have a irregular shape

Answer 7

Large producer, Parasites

Question 8

What’s the difference between a pyramid of numbers and a pyramid of energy?

Answer 8

A pyramid of numbers can be irregular shaped but a pyramid of energy is always pyramid shaped