B1.4 Interdependence and adaptation

Question 1

What do plants compete for? (4)

Answer 1

• Light
• Space
• Water and Nutrients from the soil

Question 2

What do animals compete for? (3)

Answer 2

• Food
• Mates
• Territory

Question 3

Name three types of extremophile (e.g. thermophile)

Answer 3

Acidophile (all pHs)
Metallotolerant (dangerous metals)
Radioresistant (resistant to radioactivity)

Question 4

Extremophiles may be tolerant to high levels of…

Answer 4

…salt, temperatures, or pressures

Question 5

What four factors could be changed to help animals survive in dry and arctic environments?

Answer 5

• Surface area
• Thickness of insulating coat
• Amount of body fat
• Camouflage

Question 6

How are plants adapted to survive in dry environments?

Answer 6

• Surface area changes (esp. leaves)
• Water-storage tissues
• Extensive root systems

Question 7

What three features could animals and plants have to deter predators?

Answer 7

• Thorns
• Poisons
• Warning colours

Question 8

Give two examples of environmental changes

Answer 8

• Average temperature changes
• Rainfall
• Predators

Question 9

What can lichens indicate and what do they show the concentration of in particular?

Answer 9

• Air pollution

- Sulfur dioxide

Question 10

What non-living indicators can be used to show environmental change?

Answer 10

Oxygen levels

• Temp
• Rainfall

Question 11

Name 4 affecting factors that population size depends on

Answer 11

Competition

• Predation
• Disease
• Human influences