Q1.8. Teiko Kato and colleagues measured stinging hair density on the leaves of

Question

Q1.8. Teiko Kato and colleagues measured stinging hair density on the leaves of a nettle in Japan. They collected seeds from four different sites and cultivated them in a greenhouse. The results of their work are shown at right. One of the sites has had a large population of deer for more than 1200 years. Which site (A, B, C, or D) would you guess is the site with deer, and why? O Site A. Deer can feed more easily on nettles when the density of stinging hairs is very low. O Site A. Deer will eat more of the nettles, so there will be fewer stinging hairs on each plant. Site D. The nettle population evolved more stinging hairs as defense against herbivory by deer. O Site D. Stinging hairs cling to deer, so with more deer around, nettles produce more hairs. Submit

Explanation / Answer

Your answer is correct.

Nettles with more stinging hairs are resistant to deer browsing. As the nettle and dear both surviving in the same area, so definitely nettles with dense stinging hairs are selected by nature as a device against predation. The areas with few or no deer have nettle population with less stinging hairs.

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