Question

6. How can you prove that starch is present in leaves?

7. Explain the heterotrophic mode of nutrition in plants?​

Answer 1

Explanation:

(6) A chemical test for starch is to add an iodine solution and look for a colour change. Take a piece of the food item. ... If the colour of the food item becomes blue-black, then it indicates the presence of starch in that food and if the colour doesn't turn into blue-black, then it indicates starch is not present.

(7). Plants which obtain their food from other sources are called Heterotrophic plants. Such mode of nutrition in plants is called heterotrophic mode of nutrition. Parasites absorb their food from other living organisms. Organisms from which parasites absorb their food is called host.