Question

一道高中生物实验设计题大气中二氧化碳浓度的升高,会影响植物体内相关物质的变化,进而影响植食性动物的生理变化.请完成下面“

Answer 1

1,正常空气

2,将10条棉铃虫分别装在10只饲养盒中,分为甲乙两组,摘下AB中大小接近的棉花叶饲喂棉铃虫,向甲组中放入A中叶片,乙组中放B中叶片

3,将饲养盒放在相同的适宜环境下,观察甲乙两组棉铃虫生长发育时间长短

1,若甲组棉铃虫生长发育时间比乙组长,则在CO2浓度升高条件下生长的棉花,被棉铃虫取食后,时间加长

2·······················································短,·································································································缩短

3······················································一样长,则对时间无影响