Limiting Water Loss in Insects & Plants (AQA A-Level Biology): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why do features that enhance gas exchange promote water loss in terrestrial organisms?
Why do features that enhance gas exchange promote water loss in terrestrial organisms?
They need thin, permeable, large surfaces
What material forms the rigid external skeleton of insects?
What material forms the rigid external skeleton of insects?
Chitin
What can insect spiracles do when gas exchange demands are low?
What can insect spiracles do when gas exchange demands are low?
Close completely
By what percentage can closing spiracles reduce water loss in insects?
By what percentage can closing spiracles reduce water loss in insects?
Up to 90%
What does the insect tracheal system transport directly to tissues?
What does the insect tracheal system transport directly to tissues?
Air containing oxygen
Why cannot plants adopt a small surface area to volume ratio strategy?
Why cannot plants adopt a small surface area to volume ratio strategy?
Photosynthesis requires extensive leaf area
What percentage of water loss can occur through the waxy cuticle in plants?
What percentage of water loss can occur through the waxy cuticle in plants?
Up to 10%
What happens to trapped air when leaves roll inward in xerophytes?
What happens to trapped air when leaves roll inward in xerophytes?
It becomes saturated with water vapour
Where are sunken stomata located in xerophytic plants?
Where are sunken stomata located in xerophytic plants?
In pits or grooves
What do hairy leaf surfaces trap close to the leaf in xerophytes?
What do hairy leaf surfaces trap close to the leaf in xerophytes?
Still, moist air