An American cockroach (Periplaneta americana) can quickly begin to turn away from approaching danger, such as a hungry toad lunging toward it or a flyswatter wielded by a person, after the air pushed in front of the moving object reaches the roach’s body. A cockroach has very sensitive wind sensors (mechanoreceptors) on its cerci, which are small appendages at the end of its abdomen. One cercus points slightly to the right, the other to the left. Use what you know about moth orientation to bat cries to suggest how this simple system might provide the information the roach needs to turn away from an attacking toad, rather than toward it. Also, briefly describe how might you test your hypothesis experimentally?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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An American cockroach (Periplaneta americana) can quickly begin to turn away from approaching danger, such as a hungry toad lunging toward it or a flyswatter wielded by a person, after the air pushed in front of the moving object reaches the roach’s body. A cockroach has very sensitive wind sensors (mechanoreceptors) on its cerci, which are small appendages at the end of its abdomen. One cercus points slightly to the right, the other to the left. Use what you know about moth orientation to bat cries to suggest how this simple system might provide the information the roach needs to turn away from an attacking toad, rather than toward it. Also, briefly describe how might you test your hypothesis experimentally?

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