Kin selection also applies to competition, because if family members compete less with each other, the group will do better overall. “Everywhere you look, plants are growing right up next to other plants,” Dudley said,“ Usually it’s a case of each plant for itself. But sometimes those plants are related, and there are benefits to not wasting resources on being competitive, and there is not really a cost to not being competitive as long as your neighbor is also not being competitive.”
Learning and memory appear to be important for kin recognition in animals, but this isn’t an option for plants, she noted.
Some researchers speculate(猜测) that plants communicate through their roots, identifying themselves using tiny chemical signatures specific to each plant’s family.
()6.What’s the main idea of the message?
A.Studies find plants can recognize, communicate with relatives.
B.Kin selection is important for plants.
C.Animals can recognize and memorize their relatives.
D.Competition asks plants to recognize their relatives.
()7.Which of the following is NOT right about animals’ social skill?
A.Animals can recognize and memorize their relatives.
B.Animals’ social skill is to cooperate and share resources.
C.Animals’ social skill can recognize close relatives in order to work together.
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