Welcome to the Quiz!

This quiz contains 9 questions from a mix of 1 subtopics.

Which of the following stimuli has NOT been found to trigger action potentials in plants?

sound

touch

physical damage

chemicals

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How do plant action potentials propagate through the plant?

through the xylem

through cell membranes and plasmodesmata

through cell membranes only

through plasmodesmata only

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Compared to animal action potentials, plant action potentials are:

faster and shorter lasting

faster and longer lasting

slower and shorter lasting

slower and longer lasting

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1

What triggers the mechanical opening of calcium ion channels in the Venus flytrap?

cell tension changes

digestive enzymes

stiff outer hairs

sensory trigger hairs

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1

The influx of which ion into cells at the base of the sensory hair creates a receptor potential in the Venus flytrap?

calcium

chloride

sodium

potassium

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1

What do the action potentials in the Venus flytrap NOT lead to?

closure of the trap in response to an insect

opening of the trap in response to an insect

exocytosis of digestive enzymes

changes in cell tension

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How does the Venus flytrap conserve energy and avoid wasteful triggering?

by requiring simultaneous stimulation of multiple sensory hairs

by requiring repeated contact within a short period

by having small gaps between the stiff outer hairs

all of the above

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1

What is the primary nutrient that the Venus flytrap needs to obtain by trapping and digesting small animals?

nitrogen

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Describe the mechanism by which the Venus flytrap captures and digests its prey.

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5