Question

it answer type questions:
How would you test the presence of starch in leaves?
What are insectivorous plants? Name an insectivorous plant.
Define it:-
(a) Saprophytes
(b) Parasites
What is the action of saliva on food?
What are villi? Where are villi located? What is the function of villi?
Name the various kind of teeth in our mouth State their functions.
What is an occupational hazard? Name one occupational hazard.
How will you find make difference between natural silk and artificial silk?
What is a cocoon? Name the fibre of which a cocoon is made.
Why do organisms need to take food? What are the two main modes of nutrition in
organisms?
ansiver hune questions:-​

Answer 1

Answer:

1)presence of starch in leaves will be checked with the help of Iodine.

After removal of chlorophyll, boil the leaves in the presence of alcohol.. the blue indicates the presence of starch in leaves.

2) Insects eating plants are known as insectivores plant. e.g pitcher plant.

4) Saliva breakdown the complex form of food into simpler form with the help of enzymes salivary amylase.

5) Villi are the finger like projection which is situated at the surface of small intestine. It helps in the absorption of food.

7) Silk Fiber is made from cocoon.

8)Organism need food to get energy. for the growth of body and to maintain there's life process. Two modes of nutrition are (a) Autotrophic nutrition (b) heterotrophic nutrition.