Question

Part-B Answer the following questions carry two marks:- (10)
Q. 1 Why do organisms need to take food?
Q. 2 What is shearing?
Q. 3 What is physical change?
Q. 4 What are indicators?
Q. 5 What is sericulture?​

Answer 1

Answer:

1. Organisms need to take food in order to gain energy and perform various types of works

2.shearing is the occurrence of shear strain,which is a deformation of a material substance in which parallel internal surfaces slide past one another

3.a change in which physical properties like shape,size etc changes

4. indicators are substance which change colour when they are added to acidic or basic solutions

5.rearing of silkworm

Answer 2

Answer:

All living organisms require food to survive. It gives them energy to perform various activities. All activities such as playing, running, walking, studying, etc. require energy. The various components present in our food such as carbohydrates, proteins, fats, vitamins, and minerals provide energy to our body. These are also important for growth and development of the body.