RBSE Solutions for Class 5 Environmental Studies Chapter 14 Digestion of Food

RBSE Solutions for Class 5 Environmental Studies Chapter 14 Digestion of Food

Rajasthan Board RBSE Class 5 Environmental Studies Chapter 14 Digestion of Food

Text Book Questions

Think and write the answers of the following (Page No. 75)

Question 1.
When we eat pur food, why should We take only small bites of chapatti?
Answer:
We should eat the food slowly by chewing. So, we should take only small bites of chapatti.

Question 2.
Why is it necessary to chew the food?
Answer:
When we chew the food slowly, saliva mixed with the food makes the food smooth and lubricated like a paste. The saliva secreted in our mouth, converts the starch present in food to glucose. Due to this glucose, the food tastes sweet. The digestion of food starts from the mouth only.

Look at the figure (Page No. 75) and answer the following

Question 1.
Which are the major organs of the digestive system?
Answer:
Major organs of the digestive system are mouth, oesophagus, stomach, intestine.

Question 2.
What changes take place in the food while it reaches the stomach from the mouth?
Answer:
Saliva makes the food smooth and lubricated like a paste when the food reaches the
stomach from the mouth.

Think and answer the following questions (Page No. 76)

Question 1.
You must have heard someone saying “rats are jumping in my stomach”. What is the meaning of this sentence?
Answer:
The meaning of this sentence is – we are feeling hungry.

Question 2.
At what time do you feel hungry?
Answer:
If we do not eat for the whole day, we feel weak and we need food. We feel hungry.

Question 3.
If you do not get food for one day, what will happen?
Answer:
If we do not eat food for the whole day, we feel weak and we need instant energy.

Question 4.
When we fall ill, why is glucose dissolved in water given to us?
Answer:
When we feel very weak and need instant energy, glucose is given to us by doctor.

Think and answer the following (Page No. 78)

Question 1.
Why was Meera feeling weak?
Answer:
Meera was suffering from anaemic problem and so she was feeling weak.

Question 2.
In which of your classmates, have you noticed the symptoms of disease like Meera?
Answer:
These symptoms are found in Parul, Ravi, Ankit, Rohit, Akash along with Meera.

Question 3.
What should we do so that there is no deficiency of iron in our body?
Answer:
We should take clean vegetables, fruits, carrot, pomegranate, cereals, seasum seed, pulses, walnut, almond, guava, sweet lime, date plums, resins, fish liver etc. These are the main sources of iron. For the deficiency of iron, doctor prescribes to take folic acid. It helps the formation of blood in our body.

(Page No. 79)

Question 1.
Divide these food items in the groups given below:
Answer:

Think and answer the following (Page No. 81)

Question 1.
When do the children fall ill?
Answer:
When children do not use clean toilets, do not wash their hands with soap after defecation and before eating food, do not drink pure water and do not wash fruits and vegetables with clean water, then they fall ill.

Question 2.
Due to what reason, the development of the children hamper?
Answer:
In the children, there can be deficiency of iron in the body and physical development hampers due to the growth of worms.

Question 3.
Why are the children unable to concentrate on their studies?
Answer:
Worm control provides physical and mental strength in children and they do not fall ill frequently. Due to this, they can concentrate on their studies.

Question 4.
What are the advantages of worm control in children?
Answer:
Worm control provides physical and mental strength in children and they do not fall ill frequently. Due to this, they can concentrate on their studies. It helps in faster development in children.

Learnt, understood and now tell (Page No. 82)

Question 1.
What is the full name of the tablet given for the treatment of anaemia?
Answer:
Iron and folic acid.

Question 2.
Which tablet will you take for the worm control (deworming)?
Answer:
Albendazole.

Question 3.
What food items should we eat to remove iron deficiency?
Answer:
We should take clean vegetables, fruits, carrot, pomegranate, cereals, seasum seed, pulses, walnut, almond, guava, sweet lime, date plums, resins, fish liver etc.

Question 4.
Draw a labelled diagram of the digestive system
Answer:

Other Important Questions

Objective Type Questions :

Question 1.
When a person becomes very’ weak and need instant energy, this is given to him
(a) Glucose
(b) Water
(c) Curd
(d) Juice
Answer:
(a) Glucose

Question 2.
We get this from the food.
(a) Protein
(b) Energy
(c) Fat
(d) All of the above
Answer:
(d) All of the above

Question 3.
Tablet we will take for the worm control is
(a) Ifa
(b) Albendazole
(c) Both (a) and (b)
(d) None of these
Answer:
(b) Albendazole

Question 4.
The digestion of food start from here only,
(a) Oesophagus
(b) Stomach
(c) Mouth
(d) Intestine
Answer:
(c) Mouth

Question 5.
The food reaches from oesophagus to
(a) Small intestine
(b) Large intestine
(c) Rectum
(d) Stomach
Answer:
(d) Stomach

Fill in the blanks :

1 ……..gives us energy. (food/bath)
2. For getting instant energy, ………. is being used. (iron / glucose)
3. Green vegetables are the main sources of ……… (glucose / iron)
4 ………. control provides phy sical and mental strength in children, (worm / polio)
Answer:
1. (food)
2. (glucose)
3. (iron)
4. (worm).

State True and Raise :

1. We should wash our hands with soap after defecation and before eating food.
2. Worm control does not help in faster development in children.
3. The saliva secreted in our mouth converts the starch present in the food into glucose.
4. We should eat food quickly without chewing it.
Answer:
1. (True)
2. (False)
3. (True)
4. (False).

Very Short Answer Type Questions :

Question 1.
Your classmate is feeling weak due to deficiency of iron in his body. Which items of the following list of the eatables would you suggest him to eat? (Model Paper) Rice, ghee, spinach, fish, apple, potato
Answer:
(i) Spinach
(ii) Fish
(iii) Apple

Question 2.
Your classmate is suffering from deficiency of blood. Which items of the following list of the eatables would you suggest him to eat? Ghee, mawa, spinach, green vegetables, t banana, potato
Answer:
(i) Spinach
(ii) green vegetables
(iii) banana.

Question 3.
Which of the following food items should be taken in less quantity?
Ghee, pulses, spinach, oil, dahlia, apple, sweets
Answer:
(i) Ghee
(ii) oil
(iii) sweets.

Question 4.
Which of the following food items should be taken in limited quantity?
Ghee, pulses, apple, milk, curd, oil, tomato, rice, sweets, butter milk, potato, chapatti
Answer:
(i) Milk
(ii) curd
(iii) butter milk.

Question 5.
What makes on chewing the food slowly?
Answer:
Saliva

Question 6.
How does food get together with saliva?
Answer:
Saliva mixes with the food and makes the food smooth and lubricated like a paste.

Question 7.
What is the mouth forming saliva that turn into glucose?
Answer:
Starch.

Question 8.
When a person becomes very weak and he needs instant energy, what is the suggestion of doctor to him?
Answer:
To give him a bottle of glucose.

Question 9.
What makes after the digestion of food in stomach?
Answer:
Glucose.

Question 10.
What is the taste of glucose with saliva in our mouth? ‘
Answer:
Sweet.

Question 11.
When do you start feeling hungry?
Answer:
After 4-5 hours of taking meal.

Question 12.
Write the full form of IFA.
Answer:
Iron Folic Acid.

Question 13.
What is the utilisation of the tablet of Albendazole?
Answer:
To control the worms in the stomach.

Question 14.
From where the digestion of food starts?
Answer:
From mouth.

Question 15.
What is the correct process of taking food?
Answer:
We should eat food slowly by chewing.

Question 16.
What are taken by players for instant energy?
Answer:
Glucose.

Question 17.
Except glucose, which drink is given to us as a form of energy which can be prepared in our house?
Answer:
Nimbupaani (lemon juice).

Question 18.
Which 3 ingredients, we should use maximum for our good health? (Board Paper)
Dahlia, poha, fish, ghee, pulses, oil, curd
Answer:
(i) Dahlia
(ii) Poha
(iii) Pulses

Short Answer Type Questions :

Question 1.
How does the food enter our body and give us strength to work?
Answer:
The food in the mouth after reaching the stomach, goes to the small intestine and then to the large intestine. In the stomach and the intestine, the food is digested with the help of digestive juices and it gives us energy to work.

Question 2.
What is the function of tongue in food digestion?
Answer:
When we chew the food, the tongue tosses the food frequently and mixes with saliva to make a paste so that we can also get the taste of food.

Question 3.
What is the purpose of saliva mixing with food?
Answer:
When the saliva mixes with food, it makes form of paste so that the food can easily pass through the food pipe.

Question 4.
What should we do to control the worms in our stomach?
Answer:
We should do the following to control worm in our stomach:

• We should always use clean toilets.
• Wash hands with soap after defecation and before eating food.
• Always use pure drinking water.
• Wash fruits and vegetables with clean and pure water.
• We should always clean and trim nails.

Question 5.
What are the major symptoms of iron deficiency?
Answer:
(i) Feeling very weak
(ii) Problem in breathing
(iii) Dryness of lips and tongue
(iv) Not like to eat food
(v) Not able to concentrate on studies
(vi) Cannot sleep properly
(vii) Severe tiredness

Question 6.
What are the main sources of iron?
Answer:
We should take clean vegetables, fruits, carrot, pomegranate, cereals, seasum seed, pulses, walnut, almond, guava, sweet lime, date plums, resins, fish liver etc. These are the main sources of iron. For the deficiency of iron, doctor prescribes to take folic acid.

Question 7.
Distribute the things from the given food group into the following sections.
Food items -Spinach, milk, banana, dahlia, fish, cabbage, butter milk, grapes, suji, egg

Answer:
1. Spinach, cabbage
2. Milk and butter milk
3. Banana, grapes
4. Dahlia, suji
5. Fish, meat, eggs

Question 8.
Match the following of A and B group.

Answer:

Question 9.
Select the vegetables and food from among these
Bitter gourd, mango, brinjal, cauliflower, apple, spinach, banana, grapes, potato, papaya (Board Paper)
Answer:

Essay Type Questions :

Question 1.
What will happen if you try to slow down eating food?
Answer:
(i) In die beginning, we chew the food and it makes small pieces of it so that it is easier to swallow.
(ii) Then on mixing with saliva, it becomes like paste.
(iii) Roti, bread etc. tastes sweet which was not sweet in the beginning. Sometimes, due to the presence of salt, pepper and masala we cannot feel the sweetness.

Question 2.
In which situation doctor gives advice to give the patient a bottle of glucose?
Answer:
When we eat food, after 4-5 hours, we again start feeling hungry, because the food eaten by us digests. Food gives us energy. If we do not eat for the whole day, we feel weak and doctor advises to give glucose from outside.

Question 3.
Describe the whole process of chewing the food.
Answer:
(i) We should not swallow food very fast without chewing. We should eat slowly after proper chewing. When we chew the food slowly, saliva mixed with the food and makes the food smooth and lubricated like a paste. The saliva secreted in our mouth, converts the starch present in food to glucose. Due to this glucose, the food tastes sweet. The digestion of food starts from the mouth only.

(ii) Initially, the food in the mouth is chewed with teeth and then through the oesophagus, it reaches the stomach, from where it goes to the small intestine and then to the large intestine. In the stomach and intestine, the food is digested with the help of the digestive juices. The undigested food collects in the rectum, which is then excreted from the body.