RBSE Solutions for Class 5 EVS Chapter Chapter 11 Life in Water

Rajasthan Board RBSE Solutions for Class 5 EVS Chapter 10 Flow of Water Textbook Exercise Questions and Answers.

RBSE Class 5 EVS Solutions Chapter 11 Life in Water

RBSE Class 5 EVS Life in Water Textbook Questions and Answers

Explore and Answer the Following

Question 1. 
Which are the organisms you have seen, that live in water?
Answer: 
Crocodile, tortoise, fish, leech, etc. 

 

Observe and Answer the Following

Question 1. 
Which animals are seen in the above figure?
Answer: 
Crocodile, fish and tortoise.

Question 2. 
Out of them which are the animals that live only in water?
Answer: 
Fish.

Question 3. 
Which are the animals that live both on land and in water?
Answer: 
Crocodile, tortoise,

Think and Answer These :

Question 1. 
Make a list of the aquatic animals.
Answer: 
(1) Fish 
(2) Crocodile
(3) Tortoise 
(4) Leech 
(5) Aquatic snake 
(6) Oyster etc.

Question 2. 
Due to what reasons, some animals and plants are able to survive in wa¬ter?
Answer: 
Only due to their special physical characteristics, animals and plants are able to sur¬vive in water.

Points for Discussion :

Question 1. 
The animals that live on land like dog, cow, buffalo, keep their head out of the water while swimming. Why do they do so?
Answer: 
The animals that live on land like-dog, cow, buffalo keep their head out of the water because they are unable to breathe in water. Hence, for breathing they keep their head out of the water.

Question 2. 
How do fishes survive in water?
Answer: 
Fish is able to remain safe in the water due to its specific shape (physical structure), glossy and thick skin.

Question 3. 
Whom does their shape look like? 
Answer: 
The shape of a fish looks like a boat.

Question 4. 
Which organizer found in the fishes, which help them to swim in water?
Answer: 
Tail and fins.

Think and Write the Answers of the following :

Question 
Draw a diagram of a ‘fish’ in your notebook.

Things to Do

Question 1. 
Where is the algae found?
Answer: 
Algae is found in areas where water remains accumulated.

Question 2. 
Make a list of the plants that are found in water?
Answer: 

1. An Eichhomia Plant (Jalkhumbi)
2. Lotus 
3. Algae 
4. Shirui Lily (Kumudini) 
5. Water chestnut (Singhara).

Question 3. 
If the aquatic plants that are found in water are taken out of water, then what wil happen to them?
Answer: 
If the aquatic plants are taken out of water, they will die.

Question 4. 
If the plants that grow on land are grown in water, then what will happen?
Answer: 
If they are grown in water, they will die. 

Explore

Question 1. 
Why the aquatic plants do not decay in water?
Answer: 
Because the body structure of the plants is such that they can survive only in water.

Points for discussion :

Question 1. 
Which is the plant completely submerged in water and how do its leaves look like?
Answer: 
The plant which is completely sub-merged in water is an Eichhornia plant (Jalkumbhi), and it is green.

Question 2. 
How do the leaves of the plant of flowing water, look like?
Answer: 
The leaves of the plant of flowing water are narrow like ribbon.

Question 3. 
How do the leaves of the plant floating on the surface of the water look like?
Answer: 
Broad and glossy.

Question 4. 
Why are the leaves of the lotus plant broad?
Answer: 
They are broad so that they can main-tain balance and can survive by floating smoothly on the surface of water.

Question 5. 
Why are the leaves of the plants of flowing water, very narrow like a ribbon?
Answer: 
They are narrow like ribbon so that they don’t get damaged due to the flow of water, and they can float smoothly on the surface of water.

Points for Discussion

Question 1.
Which aquatic plant is shown in the pond?
Answer: 
An Eichhornia plant (Jalkhumbhi).

Question 2. 
If the entire pond gets covered with Eichhornia plant, then what will happen?
Answer: 
Then, water in the pond will not be visible from outside, and the other aquatic or 

Question 3. 
What difficulties will the other aquatic aniamal and plants have if there is more growth of Eichhornia?
Answer: 
If there is more growth of Eicchomia in the pond, then the other aquatic plants and organisms will not get any space to live in the pond, due to this no new plants will grow. The animals or other aquatic organisms will also have difficulty to live in the pond, 

Learnt, understood and now tell

Question 1. 
Name two aquatic animals.
Answer: 

1. Fish 
2. Crocodile.

Question 2. 
Name two aquatic plants.
Answer: 

1. Eichhornia (Jalkhumbi) 
2. Lotus.

Question 3. 
With the help of your teacher, observe any pond or step well in your nearby area and make a list of the aquatic animals and plants found in it.
Answer: 
Aquatic Organisms

1. Tortoise 
2. Fish 
3. Frog 
4. Leech 
5. Snail.

Aquatic Plants

1. Water chestnut (Singhara)
2. Eichhornia (Jalkumbhi)
3. Lotus 
4. Algae 
5. Lily (Kumudini).

RBSE Class 5 EVS Life in Water Important Questions and Answers

Question 1. 
Choose the right option :
(i) Fish is found in-
(a) field (b) hills
(c) water (d) deserts
Answer:
(c) water (d) deserts

(ii) Aquatic plant is-
(a) Wheat
(b) Parthenium (Gajarghas)
(c) Marigold
(d) Chestnut (Singhara)
Answer: 
(d) Chestnut (Singhara)

Question 2. 
Fill in the blanks
(a) We see many types of plants and ............... around us.
(b) The effect of the ............... is clearly visible in the structure of every plant and animal.
(c) If we work for a long time in water, then the skin of our fingers become ...............
(d) ............... spreads very fastly, so the entire pond is covered.
Answer:
(a) animals 
(b) surroundings 
(c) wrinkled
(d) An Ei chhomia plant (J alkhumbi)

Question 3.
Match Table A with Table B :
table 1

Table A	Table B
Aquatic animal	small plants
Aquatic plant	Fins
Fish	Tortoise
Algae	Jalkhumbi (Eichhomia)

Answer:

Table A	Table B
Aquatic animal	Tortoise
Aquatic plant	Jalkhumbi (Eichhomia)
Fish	Fins
Algae	Small plants

Question 4. 
State True/False.
(i) Plants and animals are also found in water.
(ii) Bears are also found in snowy area.
(iii) Lotus is not an aquatic plant.
(iv) Algae are such small plants that grow in water only.
(v) Aquatic animals and plants breathe in water only.
Answer: 
(i) True 
(ii) True 
(iii) False 
(iv) True 
(v) True.

Very Short Answer Type Questions 

Question 1. 
Effect of what is seen on the structure of animals and plants?
Answer: 
Effect of their surroundings.

Question 2. 
What does a bear have on its body that protects it from very cold weather?
Answer: 
It has very long hair on its body.

Question 3. 
What are those plants called which survive only in water?
Answer: 
Aquatic plants.

Question 4. 
What are the animals which live in water called?
Answer: 
Aquatic animals.
Question 5. 
Do the plants grow in flowing water also?
Answer: 
Yes.

Short/Long Answer Type Questions

Question 1. 
At which places are the plants and the animals living on the land found?
Answer: 
Of the plants and animals that live on land, some of the plants and animals are found in the mountains, some on the plains, and some in the deserts.

Question 2. 
How are the plants and the animals, able to live (survive) in specific environment?
Answer: 
Due to their physical characteristics only, the plants and the animals are able to live in specific surroundings.

Question 3. 
What is adaptation?
Answer: 
The aquatic animals and plants can live in water due to some special physical characteristics. This is known as adaptation.

Question 4. 
Mention the types of aquatic plants on the basis of their submergence in the water.
Answer: 
There are two types of aquatic plants on the basis of their submergence in the water:

1. The plants which remain completely sub¬merged in the water.
2. The plants which remain half submerged in the water but their leaves keep on floating on the surface of the water. 

Question 5.
How many types of aquatic plants are there on the basis of floating in water?
Answer:

1. The plants which grow in flowing water.
2. The plants which grow in stagnant water.

Question 6. 
Why is the Eichhornia plant (Jaikhumbi) has be removed from time to time from the ponds?
Answer: 
Eichhornia plant spreads very fast in the ponds or lakes, etc. pn its own without plant-ing it or taking care of it. It covers the water surface of the entire pond, due to this the other plants which grow in water, and the organisms (animals) living in the water don’t get enough space to survive. Therefore it is necessary to remove it from time to time.

Question 7. 
Mention some features of aquatic plants.
Answer: 
Features of aquatic plants :

1. The aquatic plants are tender.
2. Stems of the aquatic plants are holllow and filled with air.
3. The leaves of aquatic plants are green and flat, and their surface has wax-like which flourish substance which helps them to flourish in water without developing wrinkles.

Question 8. 
Following are the plants which flourish on land or in water. Separate them. Eichhornia plant (Jaikhumbi), Marigold, Neem, Lotus,Water Chestnut (Singhara), Rose, Algae, Mango, Khejari, Lily (Kumudini).
Answer:

Aquatic plants	Plants flourishing on land
Eichhomia (Jalkumbhi)	Marigold
Lotus	Neem
Water Chestnut (Singhara)	Rose
Algae.	Mango
Lily (Kumudini)	Khejan