Leaves are green because they contain _. A. chlorophyll B. carotene C. xanthophyll D. anthocyanin 相关知识点: 试题来源: 解析 A。叶子是绿色的因为它们含有叶绿素。B 选项 carotene 是胡萝卜素;C 选项 xanthophyll 是叶黄素;D 选项 anthocyanin 是花青素。
题目Leaves are green because they contain _. A. water B. chlorophyll C. oxygen D. carbon dioxide 相关知识点: 试题来源: 解析 B。因为叶子是绿色是因为含有叶绿素,A 选项水,C 选项氧气,D 选项二氧化碳都不是叶子呈现绿色的原因。反馈 收藏
储存的食物将帮助他们度过冬天。 Leaves are green in summer because they are making food. Leaves also have orange, yellow and brown colors inside them. During summer, those other colors are hidden by the green color. Do you know...
Summer leaves are green because they are full of chlorophyll, the molecule that captures sunlight and converts that energy into new building materials for the tree. As fall approaches in the northern hemisphere, the amount of solar energy available declines considerably. For many trees — ever...
The colours are magnificent, but the question of exactly why some trees turn yellow or orange, and others red or purple, is something which has long puzzled scientists. BSummer leaves are green because they are full of chlorophyll, the molecule that captures sunlight and converts that energy ...
1 During spring and summer, most tree leaves are green. Leaves appear green because of something called chlorophyll(叶绿素).67Photosynthesis(光合作用) is when green plants turn $$ C O _ { 2 } $$ and water into food, using energy from sunlight. A tree can't start photosynthesis without ...
The leaves of most plants are green because they contain ___. A. red pigment B. blue pigment C. green pigment D. yellow pigment 答案 C。文章中提到大多数植物的叶子是绿色是因为含有叶绿素,叶绿素是绿色的色素,所以答案是 green pigment。A 选项红色色素、B 选项蓝色色素、D 选项黄色色素都与叶子通常...
A why conifers remain green in winter B how leaves turn orange and yellow in autumn C how herbivorous insects choose which trees to lay their eggs in D why anthocyanins are restricted to certain trees 雅思真题阅读听力写作(答案合集版) 雅思真题阅读听力写作(答案合集版)发布...
Leaves are green in summer because they are making food. The tree saves some of the food for winter. 制作食物 树叶从阳光中为树提供食物 水和空气。 叶子中的绿色物质(叶绿素)帮助它们制造食物。 它还能使树叶变绿。 夏天 树叶在夏天是绿色的,因为...
Leaves are generally green because they contain chlorophyll a pigment that functions to select the wavelengths of light needed in the process of photosynthesis. However there are also leaves that ar,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容