CLASS-5|| EVS|| LESSON 1|| SUPER SENSES

 

CHAPTER 1

SUPER SENSES

1.        How did the ant know that the other ants were not from its group?
Ans. Ants and other animals also have different senses. They can see, hear, smell and feel. Due to different senses the ant could know that other ants were not from its group.

2.      How did the guard ant recognise this ant?
Ans. The guard ant could recognise this ant because of smell.

3.      Now can you guess why the ants behaved like that when you blocked their path?
Ans. As the ant moves, it leaves a smell on the ground. The other ants follow this smell to find the way. Thus, when their path was blocked, ants tried to maintain their path by following the smell.

4.     Have you ever been troubled by mosquitoes? Just think, how do they know where you are?
Ans.Mosquitoes can recognise the smell of our body. They can also recognise us by the heat from our body.

5.      Have you seen a dog sniffing here and there? What do you think it is trying to smell?
Ans.Yes, I have seen a dog sniffing here and there. A dog can make out the presence of another dog in the area by smelling its urine or faeces. The dog usually smells to find out if a new dog has come in the area.

6.      In what ways do human beings make use of this special sense of smell of dogs?
Ans. This special sense of smell of dogs is used by humans in many ways. Some examples are as follows:
(a) For catching criminals.
(b) For detecting stolen goods.
(c) For detecting bombs.

7.      When do you find your sense of smell helpful to you?List some examples. Like— to know by its smell that food has gone bad or that something is burning.
Ans. Apart from smelling bad food or a burning object, we can also recognise the smell of following:
Tasty food, perfume, incense sticks, flowers, sweaty cloths, gas leak in the kitchen, etc.
Name the animals that you would be able to recognise only by their smell, without seeing them.
Ans. We can recognise following animals by their smell:Dogs, cats, buffalo, cow, fish, etc.

8.   Write the names of five things whose smell you like and five things whose smell you do not like.
Ans.

I LIKE THE SMELL OF	I DO NOT LIKE THE SMELL OF
Food	Garbage
Perfume	Dead fish
Flowers	Cow dung
Incense stick	Smell from urinal
Fresh air	Stale air

 

9.      Do you and your friends have similar answers?
Ans. Yes, our answers are similar.

10.  From the smell of the clothes of your family members, can you say whom do they belong to? Try to recognise the clothes of any two members of your family in this way.
Ans. Yes, I can recognise the clothes of my family members by their smell. I could recognise the clothes of my mother and father.

11.     Sushila covered her nose when she cleaned Deepak’s nappy, but not when she cleaned her daughter. Why do you think she did this?
Ans. When we feel something is dirty, we find its smell bad. In case of Sushila, she thought Deepak’s nappy to be dirty. So, she had to cover her nose. When she was cleaning her daughter’s nappy she did not think of it being dirty.

12.   How do you feel when you walk near a heap of garbage? Think of the children who spend the whole day picking things from such garbage.
Ans. I feel bad when I walk near a heap of garbage. Children who spend the whole day picking things from such garbage become used to the smell. Their minds do not get offended by the smell.

13.   Is a smell ‘good’ or ‘bad’ for everyone in the same way? Or does it depend on how each one feels about it?
Ans. It depends on how the person thinks about a particular smell. But some smells can always be bad for most of the people.