Question

While preparing a temporary stained mount of a leaf epidermal peel, the extra stain is removed by : a) washing with water b) washing with calcium chloride c) soaking with filter paper d) absorbing with cotton wool

Answer 1

Extra stain is removed by using cotton wool, when preparing temporary stained mount of a leaf epidermal peel.

Explanation:

If we wash the prepared slide with water, the entire content of the slide may get damaged due to the entry of water inside it. If the slide is washed with calcium chloride, this may have drastic effect while inferring the result. If we soak the content with filter paper, this will disturb the specimen.  

Thus the best way to remove the extra stain is to remove it by cotton wool which simply absorbs the extra stain alone without causing any damage to the slide.

Answer 2

removed by a cotton wool