Pheromones are
A - VCE - SSCE Biology - Question 21 - 2006 - Paper 1
Question 21
Pheromones are
A. hormones found only in plants.
B. used to repel pest insects from crops.
C. effective only over very short distances.
D. chemicals that often act a... show full transcript
Worked Solution & Example Answer:Pheromones are
A - VCE - SSCE Biology - Question 21 - 2006 - Paper 1
Step 1
A. hormones found only in plants.
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Answer
This statement is incorrect because pheromones are not limited to plants; they are chemicals produced by various organisms, including animals.
Step 2
B. used to repel pest insects from crops.
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Answer
This is not a correct description of pheromones. While some pheromones can have repelling effects, they are predominantly used for communication, such as attracting mates.
Step 3
C. effective only over very short distances.
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Answer
This statement is somewhat misleading. While some pheromones act over short distances, others can be effective over longer ranges depending on the type and environmental conditions.
Step 4
D. chemicals that often act as sex attractants.
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Answer
This statement is correct. Pheromones are indeed chemicals predominantly used for sexual attraction among many species, facilitating reproduction and mate selection.
