Wheat,Beetroot,Potato etc. are sources of -

Beetroot gives us-

Potato and sweet potato:

The eyes of potato tuber are

State wherther potato is stem or root.

Cut pieces of beetroot do not leave colour in cold water but do so in hot water. Explain.

Aeroplanes jets etc. are stremlined to reduce

Fill in the blanks Dogs, cats, mammals, wheat, rice, animals, etc.are convenient categories we use to study organisms, the scientific term for these categories is……….. .

In a potato race a bucket is placed at the starting point, which is 5 m from the first potato, and the other potatoes are placed 3 m apart in a straight line. There are ten potatoes in the line (see Fig.) Each competitor starts from the bucket, picks up the nearest potato, runs back with it, drops it in the bucket, runs back to pick up the next potato, runsto the bucket to drop it in, and the continues in the same way until all the potatoes are in the bucket. What is the total distance the competitor has to run ?