Adaptations, interdependence and competition

Question 1

What is the definition of an ecosystem?

Answer 1

The interaction of a community of living organisms with the non-living parts of their environment.

Question 2

What do plants compete with other plants for?

Answer 2

Light
Space
Water and mineral ions from the soil

Question 3

What do animal compete with each other for?

Answer 3

Food
Mates
Territory

Question 4

List two ways a plant may depend on another species for its survival.

Answer 4

pollunation

seed dispersal

Question 5

What is interdependence?

Answer 5

If one species is removed it can affect the whole community.

Question 6

What is meant by a stable community?

Answer 6

One where all the species and environmental factors are in balance so that population sizes remain fairly constant.

Question 7

What is the definition of an abiotic factor?

Answer 7

A non living factor

Question 8

List three abiotic factors which may affect an aquatic organism.

Answer 8

Oxygen levels
Temperature
Carbon dioxide levels
Light intensity

Question 9

List three abiotic factors which can affect a plant.

Answer 9

Light intensity
Temperature
Carbon dioxide levels
Oxygen levels

Question 10

What is the definition of a biotic factor?

Answer 10

A living factor which may affect a community

Question 11

List four biotic factors which can affect a community.

Answer 11

Food availability
A new predator
A new pathogen
One species outcompeting another so that numbers are no longer sufficient to breed