Two Species of Beetles Are Herbivores on the Same Host

question 209

Multiple Choice

Two species of beetles are herbivores on the same host plant, and the presence of either species reduces the population growth of the other.The relationship between the beetles is therefore best described as

• A) mutualism.
• B) predation.
• C) herbivory.
• D) competition.
• E) amensalism.

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Definitions:

Melatonin

A hormone produced by the pineal gland that helps regulate the sleep-wake cycle.

Target Tissue

Specific tissues affected by certain hormones, drugs, or other signals due to the presence of relevant receptors.

Hypothalamus

A region of the brain that controls autonomic functions and plays a crucial role in hormone regulation and appetite.

Calcitonin

A hormone produced by the thyroid gland that helps regulate calcium levels in the blood.