1. Rashed asked his teacher by seeing the presence of water in the side of arum's leaf. Then teacher said to him about the work of stoma in the leaf. He also said that there is another kind of stoma in leaf that is remain in the upper and lower epidermis of the leaf.
2. Teacher shows two plants in laboratory class to his students. One is known as amphebian plant and another one is known as sunfern.
4. Between and microorganism, looks like tadpole and has DNA. On the other hand Q is unicellular and primative.