limiting water loss Flashcards
1
Q
gas exchange requires a thin, permeable surface with a large area. what does these features conflict with?
A
these features conflict with the need to conserve water.
2
Q
what does a terrestrial insect have to do with regards to limiting water loss?
A
insects have to balance the opposing needs of exchanging respiratory gases with limiting water loss.
3
Q
what adaptations have insects evolved to limit water loss?
A
small SA to vol ratio
waterproof coverings
spiracles
4
Q
why can plants not have a small SA to vol ratio?
A
they cannot have a small SA to vol ratio as they photosynthesise and photosynthesis requires a large SA for the capture of light and for the exchange of gases.
