为探究培养液中酵母菌种群数量的动态变化,某同学进行了如下操作

为探究培养液中酵母菌种群数量的动态变化,某同学进行了如下操作。其中错误的是( 

A.将适量干酵母放入装有一定浓度葡萄糖溶液的锥形瓶中,在适宜条件下培养

B.将培养液振荡摇匀后,用吸管从锥形瓶中吸取一定量的培养液

C.在血球计数板中央滴一滴培养液,盖上盖玻片,若边缘有多余培养液,用滤纸吸去

D.将计数板放在载物台中央,待酵母菌沉降到计数室底部,在显微镜下观察、计数

答案

C

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