chlorophyll C. sugar D. oxygen 相关知识点: 试题来源: 解析 B。本题考查植物叶子呈绿色的原因。选项 A“water”是水,与叶子绿色无关;选项 C“sugar”是糖,也不是叶子绿色的原因;选项 D“oxygen”是氧气,同样与叶子绿色不相关。而选项 B“chlorophyll”是叶绿素,植物叶子含有叶绿素所以呈绿色。
The leaves of most plants are green because they contain ___. A. chlorophyll B. carbon dioxide C. oxygen D. water 相关知识点: 试题来源: 解析 A。解析:大多数植物的叶子是绿色的是因为含有叶绿素。这是植物学的科学知识。在英语语法上考查名词的认知。A选项chlorophyll是叶绿素;B选项carbon dioxide是二...
A. water B. sunlight C. chlorophyll D. oxygen 相关知识点: 试题来源: 解析 C。本题考查植物叶子呈绿色的原因。大多数植物的叶子是绿色的是因为含有叶绿素,C 选项“chlorophyll”(叶绿素)符合。A 选项“water”(水)、B 选项“sunlight”(阳光)、D 选项“oxygen”(氧气)都不是叶子呈绿色的主要原因。反馈...
百度试题 结果1 题目The leaves of plants are green because they contain ___. A. chlorophyll B. carotenoids C. anthocyanins D. xanthophylls 相关知识点: 试题来源: 解析 A。植物的叶子是绿色因为含有叶绿素。反馈 收藏
not green. Plants today are green because 14 use green chlorophyll(叶绿素) to produce energy. _ 15_ these early plants probably used something called retinal(视网膜), which is a dark purple colour.During the time of the Roman Empire, it was very 16 to make purple dye(染料). The dye ...
A. chlorophyll B. carotene C. xanthophyll D. anthocyanin 相关知识点: 试题来源: 解析 A。A 选项“chlorophyll”是叶绿素;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。植物的绿色来自一种叫做叶绿素的物质,所以选 A。反馈...
百度试题 结果1 题目Chlorophyll gives plants their ___ color. A. red B. blue C. green D. yellow 相关知识点: 试题来源: 解析 C。解析:文中提到 Chlorophyll gives plants their green color.。反馈 收藏
Plants today are green because ( ) use green chlorophyll (叶绿素) to produce energy. ( ) these early plants probably used something called retinal, which is a dark purple color. During the time of the roman Empire (37 BC-476 AD), it was very ( ) to make purple d...
The green pigment in plants that helps in photosynthesis is ___. A. chlorophyll B. carotene C. xanthophyll D. anthocyanin 相关知识点: 试题来源: 解析 A。本题考查光合作用中的绿色色素。植物中的绿色色素是叶绿素,有助于光合作用。选项 B 胡萝卜素、选项 C 叶黄素、选项 D 花青素都不是主要进行光合...
C Have you ever wondered how plants are always green and growing, even though they don't move to get food like animals do? The secret behind this is a process(过程) called photosynthesis. In simple words, photosynthesis is how plants make their food using sunlight. Let's explore this inte...