B4.1.3 Competitipn And Interdependence

Question 1

What do plants need to survive

Answer 1

Light
Water
Carbon dioxide
Minerals
Space

Question 2

What do animals need to survive

Answer 2

Food
Water
Breeding partners
Space(territory)
Shelter

Question 3

Population

Answer 3

The number of organisms of each species living in an area

Question 4

Interdependence

Answer 4

When organisms within a community depend on one another

Question 5

Interactions between organisms

Answer 5

Ecological relationships

Question 6

3 main types of ecological relationships

Answer 6

Predation
Mutualism
Parasitism

Question 7

Predation

Answer 7

Relationship between a predator and a prey species.
Size of predator population directly affects size of prey population

Question 8

Most famous predator prey study

Answer 8

If population of hares increases there’s a larger food supply for the lynxes
This can therefore support more lynxes so more offspring survive
This growing num of lynxes eventually reduce the food supply
The number of predators decrease
Prey population starts to increase once more
Cycle repeats

Question 9

Mutualism

Answer 9

A relationship where both organisms benefit

Question 10

Parasitism

Answer 10

Relationship where only one organism’ (the parasite) gains.
The organisms it lives off of (host) suffers

Question 11

Example of mutualism

Answer 11

Oxpeckers eat ticks and flies living on buffalo’s skin
They gain food whilst buffalo is free from irritation and potential disease

Question 12

Example of parasitism

Answer 12

Lice on a humans head
Lice gain energy from the blood, must feed off to survive