Welcome to the Quiz!
This quiz contains 12 questions from a mix of 1 subtopics.
Which of the following is the correct order of the pathway involved in an organism's response to a stimulus?
stimulus, receptor, coordinator, effector
receptor, stimulus, effector, coordinator
stimulus, effector, receptor, coordinator
receptor, effector, coordinator, stimulus
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What is the key difference between positive and negative taxes?
positive taxes are named for the specific stimuli they are in response to, while negative taxes are not
positive taxes prompt movement away from adverse stimuli, while negative taxes lead towards a favourable stimulus
positive taxes are exhibited by plants, while negative taxes are exhibited by animals
positive taxes lead towards a favourable stimulus, while negative taxes prompt movement away from adverse stimuli
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Which of the following is an example of positive phototaxis?
bacteria moving towards regions rich in glucose
earthworms moving away from light
woodlice increasing turning frequency in dry conditions
algae moving towards light for photosynthesis
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Which of the following best describes positive chemotaxis?
an organism increasing its turning frequency in the presence of a specific chemical
an organism moving away from a region where a specific chemical is more concentrated
an organism moving towards a region where a specific chemical is more concentrated
an organism adjusting its movement speed based on the concentration of a specific chemical
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How do kineses help organisms respond to their environment?
by adjusting their movement speed and turning frequency based on the favourability of the environment
by guiding them in a directional manner towards a beneficial stimulus
by guiding them in a directional manner away from a harmful stimulus
by directing their growth towards or away from a specific stimulus
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What is the primary difference between taxes and kineses?
taxes are directional responses, while kineses are non-directional responses
taxes are exhibited by animals, while kineses are exhibited by plants
taxes involve growth movements, while kineses involve movement speed and turning frequency
taxes are named for the specific stimuli they are in response to, while kineses are not
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Which of the following statements about tropisms is correct?
tropisms are growth movements of an organism in response to a directional stimulus
tropisms are only exhibited by animals
tropisms are not named for the specific stimuli they are in response to
tropisms are non-directional responses that adjust movement speed and turning frequency
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What is the primary difference between phototropism and gravitropism?
phototropism is a non-directional response, while gravitropism is a directional response
phototropism is exhibited by roots, while gravitropism is exhibited by shoots
phototropism is a positive response, while gravitropism is a negative response
phototropism directs growth towards or away from light, while gravitropism directs growth towards or away from the gravitational pull
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Which of the following statements about plant shoots is correct?
plant shoots exhibit positive phototropism and negative gravitropism
plant shoots exhibit positive phototropism and positive gravitropism
plant shoots exhibit negative phototropism and negative gravitropism
plant shoots exhibit negative phototropism and positive gravitropism
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What is the primary benefit of positive phototropism in plant shoots?
to optimise light absorption for photosynthesis
to increase the probability of roots growing into the soil
to help the plant evade herbivores
to aid in the absorption of water and mineral ions
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Which of the following statements about plant roots is correct?
plant roots exhibit negative phototropism and negative gravitropism
plant roots exhibit negative phototropism and positive gravitropism
plant roots exhibit positive phototropism and negative gravitropism
plant roots exhibit positive phototropism and positive gravitropism
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How do taxes and tropisms differ in their mechanisms of response?
taxes involve movement of the entire organism, while tropisms involve growth of a part of the organism
taxes are exhibited by plants, while tropisms are exhibited by animals
taxes are non-directional responses, while tropisms are directional responses
taxes involve growth movements, while tropisms involve movement speed and turning frequency
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