Limiting Water Loss in Insects & Plants (AQA A-Level Biology): Flashcards
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Practise the cards
10 cards from this deck
Gas exchange & water loss conflict
Gas exchange & water loss conflict
Thin surfaces for O2 uptake also promote water loss
Insect SA:V ratio adaptation
Insect SA:V ratio adaptation
Small ratio reduces water loss area
Insect waterproof covering material
Insect waterproof covering material
Chitin skeleton with waterproof cuticle
Spiracles definition
Spiracles definition
External openings connecting to tracheal system
Insect tracheal system function
Insect tracheal system function
Tubes transport air/O2 directly to tissues
Why plants can't reduce SA
Why plants can't reduce SA
Photosynthesis needs large leaf area for light capture
Xerophytes definition
Xerophytes definition
Plants adapted to survive with limited water supply
Water loss through cuticle %
Water loss through cuticle %
Up to 10%
Leaf rolling water loss mechanism
Leaf rolling water loss mechanism
Traps saturated air, eliminates water potential gradient
Hairy leaf surface effect
Hairy leaf surface effect
Traps moist air, reduces water potential gradient