C2 Ecosystem

Question 1

What is the action conducted by decomposer?

Answer 1

Saprophytism
(break down of waste materials)

Question 2

Define food web.

Answer 2

Food web is made out of several interconnected food chains.

Question 3

What’s the main source in a food chain?

Answer 3

Sun 🌞 (not son)

Question 4

List the interactive relationship between living organisms.

Answer 4

1 Predator-prey
2 Competition
3 Symbiosis

Question 5

Competition between living organisms is divided into two, which are…?

Answer 5

1 Intraspecific (same species)
2 Interspecific (diff species)

Question 6

Name all the relationship of symbiosis.

Answer 6

1 Mutualism (互利共生)
2 Commensalism (共栖)
3 Parasitism (寄生)

Question 7

List the factors that influence the population size.

Answer 7

1 Diseases
2 Weather
3 Predator
4 Food sources

Question 8

List the advantages of biological control.

Answer 8

1 Cheaper
2 More eco friendly
3 Doesn’t jeopardise health of other species
4 Doesn’t make the agricultural pests to be more resistant
5 Doesn’t cause nature pollution