In a science experiment, if we want to test the effect of light on plant growth, what should we keep constant? A. The amount of water B. The type of plant C. The amount of light D. The temperature 相关知识点: 试题来源: 解析 A。本题考查变量控制,在测试光对植物生长的影响实验中,...
In an experiment about the effect of light on plant growth, which one is the independent variable? A. The type of plant. B. The amount of water. C. The intensity of light. D. The temperature. 相关知识点: 试题来源: 解析 C。在关于光对植物生长影响的实验中,光的强度是自变量。A 选项...
In an experiment to test the effect of light on plant growth, the amount of light is the ___. A. independent variable B. dependent variable C. control variable D. constant variable 相关知识点: 试题来源: 解析 A。在测试光照对植物生长影响的实验中,光照量是自变量,因为是实验者可以改变的因素...
题目In an experiment to study the effect of light on plant growth, which is the correct way to control variables? A. 采期是山被明个识深给般说结采期是山被明个识深给般说结Change the type of plant and the amount of water.采期是山被明个识深给般说结采期是山被明个识深给般说结 B. ...
The effect of light on plant growth 光线对植物生长的影响 植物是地球上最重要的生物之一,它们不仅能够吸收二氧化碳并释放氧气,还能够为动物提供食物和药物。然而,很多人不了解,光线对植物的生长和发育有着至关重要的影响。本文将探讨光线对植物的影响,并介绍一些常用的灯光系统,以及如何合理利用光线促进植物生长。
This experiment was conducted to explore the effects of different light length on plant growth, content and component of essential oil in fennel using the method of shading. The experiment included three kinds of light length treatment: shading at 15:00, shading at 17:00 and no shading. The ...
Dickson1 has found in Lemna minor a growth rate decline as the length of alternating periods of light and darkness decreased, with a minimum growth rate at a 1-min light period; but at a 5-sec light period the growth rate was comparable with that under a 12-h photoperiod. Similarly, ...
Plant growth regulators (PGRs) play an important role in mediating growth and stress responses in plants. Light influences PGRs concentrations in vascular plants. The effect of light on growth and endogenous PGR concentrations in microalgae was investigated in the present study. Chlorella minutissima ...
当当中华商务进口图书旗舰店在线销售正版《海外直订A Study of the Effect of Incandescent Gas-Light on Plant Growth 白炽灯对植物生长影响的研究》。最新《海外直订A Study of the Effect of Incandescent Gas-Light on Plant Growth 白炽灯对植物生长影响的研究》简介、
EFFECT OF SHORT-WAVELENGTH LIGHT ON PLANT PHYSIOLOGY Light is one of the most important environmental factors, acting on plants not only as the sole source of energy, but also as the source of external information, affecting their growth and development. Plants are empowered with an array of ph...