根据短文，选择正确答案。

   Some cats are black. Some cats are white. Some cats are black and white. But no cats are green. I have a mother cat. She has three sons and two daughters. The mother cat loves her sons and daughters and they love their mother very much. And she looks after them.

下列说法正确的是（　　）

人和动物细胞都没有细胞壁，细胞质中也没有叶绿体．（        ）