Biology
Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 40, Problem 2AC

Many people like to eat spicy foods, but most other mammals don’t. Historically, the general trend was that the hotter the climate, the spicier the foods a society traditionally favored. Using these facts as a starting point, what might be the selective advantage for plants that can manufacture spicy chemicals? Why might it be useful for humans to tolerate, and even enjoy, spicy food?

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Prairie Crocus Usually, the first spring flower people notice in the southern Yukon is the prairie crocus. Statements Related to the Adaptations of the Prairie Crocus 1 The prairie crocus, like the sunflower, is a heliotrope. That means its flower turns through the day to follow the Sun. The petals act like a satellite dish to focus the light and warmth of the sun into the centre flower. Small insects such as ants crawl into the centre of the flower, where the temperature is significantly warmer, and move around pollinating the flower. 2 The fine hairs on its leaves reduce water loss by protecting the leaves from the wind. 3 The crocus blooms while the flower is still close to the ground and well-protected. 4 Unlike most plants, the stalk continues to grow even after the flower has been pollinated so that the seed pod forms as high as possible for better seed distribution. Identify the statement or statements that you would consider to be adaptations that allow the prairie crocus to…
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