A. stamen B. pistil C. sepal D. ovary 相关知识点: 试题来源: 解析 A。解析:本题考查花朵结构。雄蕊(stamen)是花朵中承载花粉的部分。雌蕊(pistil)是接受花粉的部分,萼片(sepal)主要起保护作用,子房(ovary)是雌蕊的一部分,主要与结果相关,所以B、C、D错误。反馈...
For reproduction to succeed, the pollen must be transferred from the male part of a flower to the female part. 为了成功繁殖,花粉必须从花朵的雄性部分转移到雌性部分。 习题: They do this by pollinating the plant, which means to transfer pollen. Many plants depend on pollination for reproduction....
A flower is a special part of the plant. Flowers are also called the bloom or blossom of a plant. Inside the part of the flower that has petals are the parts which produce pollen and seeds.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商
Pollination occurs when pollen is moved within a plant's flower or carried to another flower. This is how the plants reproduce. For reproduction to succeed, the pollen must be transferred from the male part of a flower to the female part. (1) Honeybees play an interesting and important rol...
Bees are a big part of the life cycle of plants,carrying pollen from one flower to another and allowing plants to produce their frequently yummy output.But with bee populations on the decline,what can take their place?How about soap bubbles(肥皂泡)?It may sound fantastical.But Eijiro Miyako...
Bees are very strange creatures.They have their own way of telling each other that they have found a new flower.They bring some of its nectar(花蜜)back home and then do a little dance that shows where the flower is and how far away it is. In autumn the worker bees go out and ...
An allergy (过敏反应) is a strong reaction to a substance. Many things can cause allergies. The most common cause is pollen (花粉) which is usually produced by trees in the spring grasses in the summer and weeds in the fall as part of their reproductive process. Other causes include orga...
It's a neat wayof avoiding any chance of being fertilized by itsown pollen. The perfume it produces on its firstevening attracts beetles. They bring with thempollen from other lilies, so this flower is aboutto be fertilized. But then the lily closes itspetals. The beetles will be held ...
阅读理解。 An allergy (过敏反应) is a strong reaction to a substance. Many things can cause allergies. The most common cause is pollen (花粉) which is usually produced by trees in the spring grasses in the summer and weeds in the fall as part of their reproductive process. Other causes...
For reproduction to succeed, the pollen must be transferred from the male part of a flower to the female part. 译文:蜜蜂在自然界中扮演着有趣而重要的角色。除了制作蜂蜜外,蜜蜂还可以帮助许多植物繁殖。他们通过给植物授粉来达到这一目的,这意味着传播花粉。当花粉在植物的花内传送或携带到另一朵花时,授...