百度试题 结果1 题目What is the role of the cambium in a tree? A. Water transport B. Nutrient transport C. Growth in thickness D. Support 相关知识点: 试题来源: 解析 C 二、填空题 反馈 收藏
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throughout the tree;the cambium - the growing part of the trunk that produces new wood and bark;the sapwood - a thin layer of cells that moves water from the roots up to the leaves;the heartwood - dead sapwood which provides a strong central pillar that supports the tree as it grows....
In a tree, sapwood is used for water and mineral transportation. This is because it is made of xylem vascular tissue. The phloem found in the cambium... Learn more about this topic: Xylem & Phloem Lesson for Kids from Chapter 5/ Lesson 15 ...
Woody growth is evolutionarily ancient, yet has been gained and lost multiple times in plant evolution and is readily enhanced or minimized in eudicot speciation. New molecular genetic and genomic studies in Populus and Arabidopsis that are defining the genes responsible for cambium function and woody...
What is the difference between sapwood and cambium? Layers of a Tree Trunk: When a tree is cut down, we can observe several different layers in the cross-sections. The outer two layers are both considered bark, but they are labeled as outer bark and inner bark. As we go closer to the...
Young people, and the young at heart, ask great questions. But sometimes, the endless questions run into bigger answers than anyone expects. What's that tree made of? Leaves and bark, xylem and phloem, and cambium. What are those made of? Cells, molecules,carbonatoms. But what's an ato...
What are special about cambium cell layers of ancient trees?A. They are old enough.B. They are a little thinner.C. They exist in the internal wood.D. They can change into other tissues.29. What will happen if a tree has a high level of ABA?A. It will stop growing.B. It will ...
a两个基因都在形成层中的表达量最高,其次是顶芽,表达量最低的都是韧皮部组织 Two genes are both highest in the cambium expression quantity, next is the terminal bud, the expression quantity lowest all is the bast organization[translate] a在确定你的付款后, After determines your payment,[translate]...
Whatis special about cambium cell layers of ancient trees?other tissues.A. They are old enough.The old trees have a higher level of IAA, a plant growth regulator andB. They are a little thinner.growth-stimulating hormone, and a lower level of ABA, a growth- resist-C. They exist in ...