Available Answers

1. 1.

   State True or False.

   1. Cerebrum controls memory.
   2. Diseases due to malnutrition are called deficiency diseases.
   3. Blisters formed due to severe burn should be picked with a needle for their quick healing.
   4. An axe works on the principle of wheel and axle.
2. 2.

   Define in one word.

   1. Essential substances present in the food that provides energy.
   2. A tight bandage that helps to apply pressure to stop bleeding.
   3. A simple machine with a wheel attached to an axle or rod.
   4. A diet containing all the nutrients in right proportion.
3. 3.

   Match the following columns.

   Column A	Column B
   1. Automatic response of body to an event	a. protective food
   2. Strong muscles and improved breathing, blood circulation and digestion	b. snake bite
   3. Vitamins and minerals	c. reflex action
   4. First aid in which aa tight bandage is tied between the wound and heart	d. pulley
   5. Simple machine used in clothesline, flagpole and curtain strings	e. exercise

    

4. 4.

   On the basis of position of the load, the fulcrum and the effort identify the class of lever.

   

5. 5.

   Solve the crossword with the help of clues given below.

   Down

   1. A disease caused by the deficiency of Vitamin C.
   2. An essential nutrient in diet whose deficiency causes goitre.
   5. A part of brain that controls all involuntary movements of the body.

   Across

   1. A twist in the ankle or the wrist.
   3. A simple machine with two inclined surfaces joined together.
   4. Disease-causing micro-organisms.
   6. The sense organ that detects different tastes.
   7. Cheese, milk, butter and nuts are rich in this nutrient.