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Tomato plants have a way of protecting themselves from caterpillars. When any leaf on a tomato plant is bitten by a caterpillar, all the leaves in the plant begin producing special proteins that interfere with the caterpillar’s digestion. Soon, the caterpillar will be disgusted with the taste and will leave the plant alone.
Since plants do not have central nervous systems as do animals, it requires explanation how the wounded leaf notifies other leaves to be on guard for danger. Most scientists believe the messenger to be a chemical circulating in the plant’s fluids. An astonishing discovery by David Wildon, a British biologist, has posed a serious challenge to that belief. In an experiment, Wildon placed electrodes on the surface of a tomato plant and then set caterpillars on a leaf. When the leaf was injured, it discharged a tiny electric current all over the plant’s surface. Every leaf in the plant soon started producing defensive proteins.
Wildon is currently conducting further experiments on the tomato plant and other plants. Having proved the existence of electricity on the surface of the tomato plant, he is now placing electrodes inside the plant tissues to measure possible electric currents there. Many plants flower in the spring, when their leaves sense the exact length of daytime indicating the arrival of spring. How do the leaves transmit that message to the growth pints where buds appear? Wildon suspects it has to do with electricity again, and he is trying to find out.
【題組】According to the passage, tomato plants defend themselves from predators by
(A) producing a protein in their fruit
(B) connecting electrodes to the surface of predators
(C) setting up an electric fence
(D) changing their taste

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難度： 困難
1F
蘿拉 高二上 (2013/01/31)
A special protein?
2F
Lissy Lin 國三上 (2020/04/18)

According to the passage, tomato plants defend themselves from predators by

根據文章，番茄植物本身會藉由什麼來保護自己避免捕食者/掠奪者入侵？

(A) producing a protein in their fruit 製造蛋白質放入水果/果實裡面
(B) connecting electrodes to the surface of predators  將電極連結到捕食者/掠奪者的身體表面
(C) setting up an electric fence 建立一個有通電的圍欄
(D) changing their taste. 改變它們的口感-->這裡的味道是指毛毛蟲吃番茄植物的葉子的口感

根據文章第二到第四行：All the leaves in the plant begin producing special proteins that interfere with the caterpillar's digestion. Soon, the caterpillar will be ...


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Tomato plants have a way of protecting t..-阿摩線上測驗