Created by Sam Gunnell
over 5 years ago
|
||
Question | Answer |
What are xerophytes? | Plants that are adapted to survive in dry climates |
What is the main reason for adaptions of the xerophytes in order for them to survive | To reduce water loss |
Give two examples of xerophytes | Marram grass Cacti |
Why are there spines rather than leaves? | So that the SA:V ratio is reduced to reduce transpiration. they are also waxy to reduce transpiration |
Why do they have hairs? | They create a micro-climate which has still, humid air, which reduces the water potential gradient and reduces transpiration |
Why do xerophytes have rolled leaves? | It confines the stoma within a still humid micro-climate, which reduces the water potential gradient, reducing transpiration |
Do xerophytes have a thick or thin waxy cuticle? Why? | Thick so that the rate of evaporation is reduced, reducing water loss |
Where are the stomata found? Why? | In the pits so that they are sheltered from the climate, and traps moist air around stomata, lowering the water potential gradient and reducing transpiration |
Want to create your own Flashcards for free with GoConqr? Learn more.