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草履虫是原生动物的代表,它由一个细胞组成,一切生命活动都在一个细胞内完成。观察草履虫是动物教学的重要内容,对于培养学生的探究能力、提高学习热情、了解科学方法将会有较大帮助。该文用实验的方法探讨草履虫对污水的净化作用,旨在提高学生的研究能力。一、草履虫的培养1.方法1。选取离根端5cm左右的干稻草中部,剪成2cm左右的小段,数量约为20g,充水1000mL,放在明亮温暖的地方培养5-7d。由于稻草附有草履虫包囊,
Paramecium is a representative of protozoa, it consists of a cell, all life activities are done in a single cell. Observation of Paramecium is an important part of animal teaching, which will be of great help in cultivating the students’ inquiry ability, enhancing the study enthusiasm and understanding the scientific method. This paper explores the purifying effect of Paramecium on sewage by experimental method, aiming to improve students’ research ability. First, Paramecium culture 1. Method 1. Select from the root of about 5cm dry straw central, cut into small pieces about 2cm, the number of about 20g, water 1000mL, placed in a bright and warm place to cultivate 5-7d. Due to straw with Paramecium cysts,