how and why leaves change color C . why a maple leaf turns bright red 相关知识点: 试题来源: 解析 46: B 47: A 48: C 49: C 50: B 46 : 猜测词句题。由第三段第一句 A chemical called "chlorophyll" helps photosynthesis 以及第二句 It gives plants their green colour 可知,这种叫做 ...
根据文中 A chemical called chlorophyll(叶绿素)helps make photosynthesis happen. Chlorophyll is what gives plants their green color.可知答案是Chlorophyll.【小题3】英汉互译题。本题考查as引导的时间状语从句,根据比较级and+比较级,表示越来越……。可知是故答案是As summer ends and autumn comes, the days ...
根据第二段第三句"Plants use sunlight to turn water and CO2 into glucose(葡萄糖), a kind of sugar."可知答案选C。42.词义猜测题。题干意为: 划线单词"chlorophyll"的中文意思是什么?根据第三段第一句"A chemical called 'chlorophyll' in the leaves gives plants their green colour.这种在叶子中叫chlo...
Why does chlorophyll appear red under ultra-violet lighting? What makes trees change color in the fall? Why don't plants have a green light receptor? How was chlorophyll created in early earth and from an evolutionary perspective, why are leaves green?
chlorophyll,the green color of the leaves gradually fades away.As this happens, the other pigments present in the leaf become visible.According to the classic theory, this is true for the red pigment as well.It was there in the leaf all along but it was hidden by the green chlorophyll.OK...
a baby is learning to speak. She portrays Fall as a colorful display of leaves where a process of chlorophyll gradually breaking down to reveal splotches of yellow and red. Through scientific analysis chlorophyll is known to be the dark green pigment that produces a rich green color. Through...
Along with green chlorophyll, most leaves also contain yellow, orange and red-orange pigments celled carotenoids. Trees don't need light to make carotenoids. Botanists call them "helper pigments," because carotenoids absorb some sunlight and (nicely) pass the energy along to chlorophyll. We don'...
—We ___ (plan) to have a fashion show for poor children this Friday. 免费查看参考答案及解析 题目: Why doesn’t Tom need any help A.He thinks it is not hard.B.He wants to do it himself.C.He is clever. 免费查看参考答案及解析 题目: Why does the girl like collecting stampsA....
the green color of the leaves gradually fades away. As this happens, the other pigments present in the leaf become visible. According to the classic theory, this is true for the red pigment as well. It was there in the leaf all along but it was hidden by the green chlorophyll. OK, so...
2. What does chlorophyll do for a tree’s leaves? . It makes the leaves drop from the tree. . It makes the leaves taste sweet. . It makes the leaves red, gold and brown. . It makes the leaves green. 4. During the fall, how does cloudy, rainy weather affect leaf color? . It ...