Adaptation

Question 1

What do plants and animals compete for?

Answer 1

plants:

• light
• space
• water
• nutrients from soil

animals:

• food
• mates
• territory

Question 2

What are extromphiles tolerant to?

Answer 2

• high levels of sale
• high temp.
• high pressure

Question 3

How is the polar bear adapted to live in the Arcitic?

Answer 3

• white appearance - camouflage from prey
• thick layer of fat and fur - insulation
• small sa:v - minimize heat loss
• greasy coat - sheds water after swimming
• large furry feet - distribute load and increase grip on ice

Question 4

How are camels adapted to hot climates?

Answer 4

• large, flate feet - distribute weight on sand
• thick fur on top - shade
• thin fur everywhere else - maximise heat loss
• large sa:v
• loose little water through urination and perspiration
• tolerate temperatures upto 42
• slit like nostrils - keep sand out

Question 5

How are cacti adapted to hot climates?

Answer 5

• stems that can store water
• widespread root system - maximize water collection
• spines instead of leaves - (small sa) reduces transpiration
• spines also protect cacti from animals