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level: 6.5 Limiting water loss

Questions and Answers List

level questions: 6.5 Limiting water loss

QuestionAnswer
Insects and water loss- If losing too much water, close spiracles using muscles - Have waterproof, waxy cuticle on body - Tiny hair on spiracles, both reduce evaporation
Plants and water loss- Stomata kept open for gas exchange - Water enters guard cells, making them turgid - Opens pores - If plant gets dehydrated, guard cells become flaccid, closes stomata
Xerophytes- Plants adapted for life in warm, dry or windy habitats - Where water loss is a problem
Xerophytes adaptations- Stomata sunk in pits that trap moist air, reducing concen.gradi. of water between leaf + air - Hairs on epidermis, traps moist air - Curled leaves, stomata inside, protect from wind - Waterproof, waxy cuticles, reduce evaporation