Welcome to the Quiz!
This quiz contains 8 questions from a mix of 1 subtopics.
Which of the following is NOT a physical defence used by plants against herbivores?
tough, fibrous tissue
thorns
alkaloids
stinging hairs
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Which of the following is NOT true about volatile organic compounds (VOCs) released by plants?
they can attract predators of herbivores
they can signal neighbouring plants to prepare their defences
they can repel herbivores
they can only signal to other plants of the same species
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What causes the rapid movement of Mimosa pudica leaves in response to touch?
(Select all that apply)
changes in photosynthesis rate
changes in cell water pressure
changes in light levels
changes in ion distribution
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Which of the following is an example of a physical defence used by plants against herbivores?
densely hairy leaves
alkaloids
terpenoids
tannins
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Which of the following is NOT a type of chemical defence used by plants against herbivores?
terpenoids
tannins
alkaloids
thorns
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How can alkaloids like caffeine and nicotine be directly helpful to plants?
(Select all that apply)
they may be toxic or poisonous to animals
they can encourage herbivores to consume other plants
they may kill herbivores
they increase the rate of photosynthesis
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Alkaloids that act as drugs, like morphine and cocaine, can:
encourage herbivores to consume the plant
improve the digestion of herbivores
affect the metabolism of animals
attract predators of herbivores
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Alkaloids are:
salty phosphorus-containing compounds
sweet oxygen-containing compounds
sour sulfur-containing compounds
bitter nitrogen-containing compounds
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