What do you observe in the experiment of dropping a fist of Bengal gram seeds in water?

- What are the differences you observed in both the seeds?

- Do you know why the floated seeds are lighter in weight?

- Which seeds germinate well? Why?

- Which seeds would not germinate properly? why?

a. When we drop a fist of Bengal gram seeds in water some seeds come to the top surface of water and float on the surface of water and some sink to the bottom of water.

b. The seeds which are light float on the surface of water whereas those are heavy sink to the bottom. The seeds which are in bottom of the beaker are healthy and good quality seeds. While the seeds that are lighter and float on the top of beaker they are damaged seeds.

c. Floated seeds are damaged ones due to disease caused by microbes like bacteria or fungi. They might be damaged due to attack of pests or insects too. As they are eaten by these microbes they become hollow and light weight thus float on the surface of water.

d. Those seeds found in the bottom of water are good, healthy ones so they will germinate well. They are not damaged by microbes or attack of pests or insects. So they will germinate well and yield good and healthy crops.

e. The seeds which float on the surface of water would not germinate well as they are damaged by attack of pests, insects or microbes like bacteria, fungi etc. They will not germinate properly and will not yield good crops.