A. light B. heat C. water D. air 相关知识点: 试题来源: 解析 C。解析:植物的根具有向水性,通常会朝着有水的方向生长。植物的根一般是避光生长的,A错误。根生长主要受水的影响而不是热,B错误。根主要在土壤中生长,虽然需要空气但不是朝着空气生长的方向,D错误。反馈...
A. water conservation B. soil fertility C. both water conservation and soil fertility D. neither water conservation nor soil fertility 相关知识点: 试题来源: 解析 C。解析:植物的根把土壤固定在一起,这对保持水土(water conservation)和土壤肥力(soil fertility)都是有益的,所以选C。反馈...
easy for the roots of plants to grow 根系易于生长 to make plants grow better 使作物生长良好 after the plants have started to grow 作物开始生长以后 grow into 长成,发展成为 to grow 栽培 grow on v.引起...爱好,加深影响 grow in 增加在...方面成长 by the roots 连根地从根本上 gr...
Plants are very useful to us and we get most of our food from plants. Everybody needs food to stay alive. Food is one of our basic needs. It gives us energy to work. Most of our food comes from plants. Plants give us many things. Food we get from plants:...
A method of offering graves, flowers and roots of plantsPROBLEM TO BE SOLVED: To provide a grave on which a rooted plant is offered by effectively utilizing humidity within the grave, a flower stand, and a method for offering the rooted plant.建部 幸江...
百度试题 结果1 题目The roots of plants are ___ the soil. A. in B. on C. under 相关知识点: 试题来源: 解析 A。植物的根在土壤里。“on”在……上面,“under”在……下面,都不符合根与土壤的位置关系。反馈 收藏
百度试题 结果1 题目 39. Roots of plants on the earth A A. always grow down B. always grow up C. can grow either up or down D. can grow in all directions () 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Toexplorethis, the researchers created acommunityofmicrobesmade up of21bacterialstrains thatresembledthecommunityfound aroundautumnalRougui roots and applied them to the roots of Maoxie plants. They report this week that this not only enhanced root growth in Maoxieseedlingsby giving them a nitrogen ...
Hairy roots are anatomically and metabolically similar to normal roots and can be induced in a variety of plants using R. rhizogenes24,25,26. To test our hypothesis, we generated ex vivo and in planta aerial hairy roots from CLso- and CLas-infected potato, tomato and citrus explant tissues ...
Some plants store reserves of water to see them through a drought; others sendrootsdeep down to subsurface water supplies. 2018年6月六级真题(第一套)阅读 Section B The decline in American Indian languages has historicalroots. 2016年6月六级真题(第一套)听力 Section B ...