(A)5. ___ are the roots of plants. A. Carrots B. Tomatoes C. Lettuces 相关知识点: 试题来源: 解析 【答案】A【核心短语/词汇】root 根;plants 植物【翻译】胡萝卜是植物的根。【解析】根据常识,胡萝卜是植物的根,A. 胡萝卜;B. 西红柿;C. 莴苣;A符合题意,故选A。
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...
About half of the hexoestrol applied as a spray was transformed to other chemical forms within a few hours. When the plants were cut the amounts present in later growth were negligible. There appears to be no danger to animal or human health in eating plants grown in soil containing hexo...
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...
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 ...
3. Which of the following are the main functions of the roots of plants?(3 A. to absorb sunlight B to absorb water from the soil C. to hold the plant firrnly to the ground D. to transport food to all other plant parts(1) A and C only(2) A and B only(3) B. and C. only...
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(方向) 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 ...
In the shoot apex, sucrose content increases when Arabidopsis plants flower in response to a photosynthetic long day3,6 or eventually in non-inductive short days7. Sugars can induce the expression of flowering genes in the meristem independently of FT4. Beside sugars, the phloem sap of ...
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 ...