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B as the scion, and generating a generation Y by using the generation C as the stock and the generation D as the scion; and generating a generation W by using the generation X as the stock and the generation Y as the scion, thus obtaining the poplar seeds with color-variable leaves. ...
What is the special feature of the leaves of c4 plants? Is the cotyledon and the leaf the same? How are flowering plants classified? What do Charophytes have in common with plants? What are the different branches of botany? What are the characteristics of vascular plants?
and they paused by a toweringsunflowerthat seemed to reach for the sky. John pointed out a rareorchidnestled in the shade, while Sarah admired the vibrantbegoniathat added a splash of color. As they wandered, they spotte...
根据第4段"They protect themselves with different colors so that they will not be seen by predators easily."(它们用不同的颜色保护自己,这样它们就不会轻易被捕食者看到。)可知,动物用不同的颜色保护自己,由此可推知predators指的是"以某种动物为食的动物",B选项"杀死其他动物以获取食物的动物。"符合语境,...
Some plants can change their leaves' color according to the ___. A. season B. animal C. person D. building 相关知识点: 试题来源: 解析 A。解析:一些植物能够根据季节改变它们叶子的颜色。选项B动物、选项C人、选项D建筑物都不是影响植物叶子颜色变化的主要因素。反馈 ...
The leaves of some plants change color and fall in ___. A. spring B. summer C. autumn D. winter 相关知识点: 试题来源: 解析 C。解析:秋天的典型特征就是树叶变色然后掉落,春天树叶是新生的,夏天树叶是绿色的且不会掉落,冬天树上基本没有树叶了,所以选C。反馈...
The natural world is colorful with humans, plants and animals showing different colors. Human skin can be many different colors and it changes with the sun, our feelings or our health for example. This is because of pigments (色素), which reflect light and make what the eye sees as colors...
根据第二段Humanskincanbemanydifferentcolorsanditchangeswiththesun,ourfeelingsorourhealthforexample.Thisisbecauseofpigments(色素),whichreflectlightandmakewhattheeyeseesascolors.人类的皮肤可以有很多不同的颜色,而且会变化。比如太阳,我们的感觉,我们的健康。这是因为色素反射光线,使眼睛看到的东西变成了颜色。可知,...
When it comes to spring blooming bulbs, there really isn’t anything quite as grand or dramatic as the Globemaster allium. Planted in the fall, this bulb will send up one straight and sturdy stem with a few sets of leaves closer to the ground. ...