RBSE Solutions for Class 5 Environmental Studies Chapter 8 The Unique World of Insects and Animals
RBSE Solutions for Class 5 Environmental Studies Chapter 8 The Unique World of Insects and Animals
Rajasthan Board RBSE Class 5 Environmental Studies Chapter 8 The Unique World of Insects and Animals
Text Book Questions
Think and answer the following (Page No. 48)
Question 1.
Which are the things that you can identify by smelling?
Answer:
We can identify by smelling things like hing, camphor, flowers, fruits, food items etc.
Question 2.
Why are the trained dogs used in intensive search operations?
Answer:
The trained dogs are used in intensive search operations because dogs have a very strong sense of smell.
Question 3.
Like bats, which are the other animals that can see in the dark?
Answer:
Like bats, dog, cat, owl etc. can see in the dark.
Activity based
Think and answer the following (Page No. 47)
Question 1.
Which things were you able to identify by touching?
Answer:
We were able to identify by touching such things like flowers, soap, book, sugar, salt, dal, pen and pencil etc.
Question 2.
Which things were you able to identify by tasting?
Answer:
We were able to identify by tasting items like fruits, vegetables, sugar, salt etc.
Question 3.
Which were the things you were able to identify by smelling?
Answer:
We were able to identify things such as fruits and flowers, by smelling.
Question 4.
How do we identify the rotten or spoiled food?
Answer:
We identify the rotten or spoiled food jy tasting or smelling it.
Think and answer the following (Page No. 48)
Question 1.
At which places have you heard a noise?
Answer:
We have heard a noise in a marriage party, on the roads, in factories, bus stands as well at in railway stations.
Question 2.
What problems do we have due to noise?
Answer:
Noise creates barrier in talking. Due to heavy noise, we may have severe headache and face problems in hearing properly.
Question 3.
Why should we not make a noise?
Answer:
Noise creates pollution which is very harmful to us.
Think and answer the following (Page No. 48)
Question 1.
Can you recognize the sound of footsteps of any of the people you know?
Answer:
We can recognize the sound of footsteps of our father and mother.
Question 2.
You have seen many types of animals. Some of them are not even seen in a particular season. Make a table in your notebook and complete it by writing the names of the seasons in which they are seen frequently.
| Name of the animal | Name of the season in which it is seen |
| Lizard | In rainy and summer season |
| Snake | In summer and rainy season |
| Frog | In rainy season |
Points for discussion (Page No. 48)
Question 1.
Why are frogs seen frequently during the rainy season?
Answer:
Rainy season is the breeding period of frogs. Hence they are frequently seen in this season.
Question 2.
Why mosquitos are seen rarely in excessive winter?
Answer:
As mosquitos maintain hibernation in winter, they are rarely seen in this season.
Think and answer the following (Page No. 49)
Question 1.
Why do ants always move in a row?
Answer:
The ants release a substance while moving due to which the other ahts follow, recognising their way easily.
Explore (Page No. 49)
Question 1.
At which places in your surroun-dings, there are more number of colonies of ants?
Answer:
In a comer of home, plant pots in the garden, ground hole, in the parks, tree trunks etc.
Question 2.
What measures do you take to protect the foods from ants?
Answer:
Salt and salt water spraying is in order to get protection from the ants. Nowadays insecticides are used for protection from ants.
Explore (Page No. 50)
Question 1.
People give ghee, sugar and wheat flour to the ants (colonies of ants). Similarly, which are the other creatures for whom we have seen people arranging food?
Answer:
People gives food to cow, dog, fish, jigeon etc.
Learnt, understood and now tell (Page No. 50)
Question 1.
Make a table in your notebook and write the characteristics of the following animals.
Answer:
| S.No | Name of the organism | Way of obtaining food | Walk/swim/fly |
| 1. | Bird | Picking | Fly |
| 2. | Fish | Swallow | Swim |
| 3. | Peacock | Picking | Fly |
| 4. | Lizard | Swallow | Walk |
| 5. | Butterfly | Sucking of flower’s honey | Fly |
| 6. | Mosquito | Bite | Fly |
| 7. | Dog | Bite | Walk |
Question 2.
Look at the pictures given below. Identify them and write one characteristic feature of the organisms.
Answer:
Rabbit – Runs very fast
Elephant – Biggest animal
Parrot – Can fly
Fish – Can swim in water
Question 3.
How do bats fly in the dark without hitting any object?
Answer:
When a bat flies at night, it produces a sound of very high frequency which reflects back when it hits any object in front of it. Following the echo, a bat can fly very easily in the dark.
Other Important Questions
Objective Type Questions :
Question 1.
A dog can recognize its lord by :
(a) Smelling
(b) Licking
(c) Talking
(d) Touching
Answer:
(a) Smelling
Question 2.
Eggs giving ant is a :
(a) Soldier ant
(b) Queen ant
(c) Worker ant
(d) Red ant
Answer:
(b) Queen ant
Question 3.
Which of the following organisms can see in all directions?
Answer:
Question 4.
Ant taking care of egg is a
(a) Worker ant
(b) Queen ant
(c) Soldier ant
(d) None of these
Answer:
(a) Worker ant
Question 5.
Which of the following organisms cannot fly?
Answer:
Fill in the blanks :
1. Bats fly at …….. (night/day)
2. Human being is ……….. organism. (an aquatic / a terrestrial)
3. Safeguarding eggs and their home is the responsibility of the ……….. ants. (soldier / worker)
4. We should arrange …….. for other creatures. (food / shelter)
Answer:
1. (night)
2. (terrestrial)
3. (soldier)
4. (food).
State True or Raise :
Question 1.
Bats can fly with their eyes at night.
Answer:
False
Question 2.
All animals have their own specific characteristics.
Answer:
True
Question 3.
Dogs always bark at strangers.
Answer:
True
Question 4.
Noise is very useful for us.
Answer:
False
Very Short Answer Type Questions :
Question 1.
Number of ants in a colony of ants.
Answer:
Is near about 1 lac.
Question 2.
Classification of ants on the basis of work are.
Answer:
Queen ant, worker ant and soldier ant.
Question 3.
Egg giving ant in the colony of ants is.
Answer:
Queen ant.
Question 4.
What is the main work of queen ant?
Answer:
Laying eggs.
Question 5.
Safeguarding the eggs and home is the responsibility of which ants?
Answer:
Soldier ants.
Question 6.
When do the hens bang?
Answer:
In early morning.
Question 7.
Which insects have antennae on their head?
Answer:
Cockroach, butterfly.
Question 8.
Which is very harmful for our ear?
Answer:
Loud noise.
Question 9.
What is the pattern of walking of the ants?
Answer:
Ants move in a row.
Question 10.
Steps to get protection from the ants.
Answer:
Salt and salt water spraying is in order to get protection from the ants.
Question 11.
In which season ants are found more?
Answer:
In summer season.
Question 12.
Which animal starts barking at a little sound?
Answer:
Dog.
Short Answer Type Questions :
Question 1.
How do ants recognize their way easily?
Answer:
The ants release a substance while moving due to which the other ants follow, recognizing their way easily.
Question 2.
Why do we feel pain when bitten by an ant?
Answer:
When ants bite us, they release a poisonous substance to our body due to which we feel pain.
Question 3.
Why does lizards are not seen in the winters?
Answer:
Because lizards stay in hibernation during winters.
Question 4.
Why do the dogs bark at strangers?
Answer:
Dogs always bark at stranger and do not allow them to enter in. They have very strong sense of smell.
Question 5.
What are the steps to get protection from ants?
Answer:
Salt and salt water spraying is in order to get protection from the ants. Nowadays insecticides are used for protection from ants.
Question 6.
Why are we unable to catch flies?
Answer:
The eyes of flies are of such type that they can see in all the directions. So, we are unable to catch flies.
Question 7.
How does a bat see at night?
Answer:
When a bat flies at night, it produces a sound of very high frequency which reflects back when it hits any object in front of it. Following the echo a bat can fly very easily in the dark.
Essay Type Questions :
Question 1.
Write about the colonies of ants. State the works which are done by different types of ants.
Answer:
The houses of ants look like a colony. The ants always live in groups. They have their own world. There are 3 types of ants – queen, worker and soldier. Ants make their colony under the soil, in tree trunks and secure and safe places in our houses. There are near about 1 lac ants living in a colony.
Work done by ants of their work Name on the basis
| Work done by ants of their work | Name on the basis |
| 1. Laying eggs | Queen ant |
| 2. Taking care of the eggs | Worker ant |
| 3. To safeguard the eggs and their home | Soldier ant |
Only one ant cannot do all type of works alone. So, all ants live together in their colonies.
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