The Snowshoe hare’s fur changes with the seasons. The Snowshoe hare has photoreceptors in the retina of their eyes that detect the amount of sunlight in their environment throughout the day. When the receptors detect longer days through the spring and summer, the stimulus causes melanin pigment production in the fur, causing it to look brown. When the receptors are not stimulated as much during the short days of fall and winter, melanin pigment is not produced, and the fur looks white.

Question

The color changing effect of the Snowshoe hare’s fur is an example of the interaction between which two systems?

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Endocrine and nervous systems
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Integumentary and circulatory systems
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Nervous and integumentary systems
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Endocrine and circulatory systems

Answer 1

The color-changing effect of the Snowshoe hare’s fur is an example of the interaction between the nervous and integumentary systems.

The nervous system detects changes in sunlight through photoreceptors, which then influence the integumentary system (the skin and fur) to change color.