A.主動(dòng)吸收B.被動(dòng)吸收C.蒸騰拉力D.水勢(shì)差
A.土壤→根毛→導(dǎo)管→葉肉→氣孔→大氣B.土壤→導(dǎo)管→葉脈→氣孔→大氣C.土壤→根毛→導(dǎo)管→氣孔→葉脈→大氣D.土壤→根毛→導(dǎo)管→葉脈→表皮→大氣