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Biology 3.1.3 Xerophytes
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- 1What are xerophytes?Plants that are adapted to survive in dry climates
- 2What is the main reason for adaptions of the xerophytes in order for them to surviveTo reduce water loss
- 3Give two examples of xerophytesMarram grass
Cacti - 4Why are there spines rather than leaves?So that the SA:V ratio is reduced to reduce transpiration. they are also waxy to reduce transpiration
- 5Why do they have hairs?They create a micro-climate which has still, humid air, which reduces the water potential gradient and reduces transpiration
- 6Why do xerophytes have rolled leaves?It confines the stoma within a still humid micro-climate, which reduces the water potential gradient, reducing transpiration
- 7Do xerophytes have a thick or thin waxy cuticle? Why?Thick so that the rate of evaporation is reduced, reducing water loss
- 8Where 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
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- El usuario ha eliminado su información de asignaturas Fichas sobre Biology 3.1.3 Xerophytes, creado por Usuario eliminado el 22/04/2019.
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- Usuario eliminado · abr 2019
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- 22 abr 2019
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- Creado por Sam Gunnell · 17 abr 2019
- Copiado por Sam Gunnell · 22 abr 2019
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