NCERT Solutions for Class 7 Science Chapter 7 Transportation in Animals and Plants
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Book Name: Science
Subject: Science
Chapter Number: 11
Chapter Name:Transportation in Animals and Plants
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Book Name: Science
Subject: Science
Chapter Number: 11
Chapter Name:Transportation in Animals and Plants
You can also bookmark this page by clicking + Save to Library icon and refer to these NCERT Solutions anytime from your account. More Detail
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NCERT Solutions for Class 7 Science Chapter 7 Transportation in Animals and Plants – Text
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Page 1
NCERT
SOLUTIONS
CLASS - 7TH
aglase .co
SOLUTIONS
CLASS - 7TH
aglase .co
Page 2
Book : Science Ncert Solutions | Chapter-11 Science
Class : 7th
Subject : Science
Chapter : 11
Chapter Name : Transportation In Animals And Plants
Q1 Match structures given in Column I with functions given in Column II.
Page : 131 , Block Name : Exercise
Q2 Fill in the blanks.
(i) The blood from the heart is transported to all parts of the body by the__________.
(ii) Haemoglobin is present in ______________cells.
(iii) Arteries and veins are joined by a network of_____________.
(iv) The rhythmic expansion and contraction of the heart is called___________ .
(v) The main excretory product in human beings is ___________.
(vi) Sweat contains water and ______________.
(vii) Kidneys eliminate the waste materials in the liquid form called _________.
(viii) Water reaches great heights in the trees because of suction pull caused by _______________.
Answer. (i) The blood from the heart is transported to all parts of the body by the arteries.
(ii) Haemoglobin is present in red bloodcells.
(iii) Arteries and veins are joined by a network of capillaries.
(iv) The rhythmic expansion and contraction of the heart is called heartbeat.
(v) The main excretory product in human beings is urea.
Page 1 of 5 Aglasem Schools
Class : 7th
Subject : Science
Chapter : 11
Chapter Name : Transportation In Animals And Plants
Q1 Match structures given in Column I with functions given in Column II.
Page : 131 , Block Name : Exercise
Q2 Fill in the blanks.
(i) The blood from the heart is transported to all parts of the body by the__________.
(ii) Haemoglobin is present in ______________cells.
(iii) Arteries and veins are joined by a network of_____________.
(iv) The rhythmic expansion and contraction of the heart is called___________ .
(v) The main excretory product in human beings is ___________.
(vi) Sweat contains water and ______________.
(vii) Kidneys eliminate the waste materials in the liquid form called _________.
(viii) Water reaches great heights in the trees because of suction pull caused by _______________.
Answer. (i) The blood from the heart is transported to all parts of the body by the arteries.
(ii) Haemoglobin is present in red bloodcells.
(iii) Arteries and veins are joined by a network of capillaries.
(iv) The rhythmic expansion and contraction of the heart is called heartbeat.
(v) The main excretory product in human beings is urea.
Page 1 of 5 Aglasem Schools
Page 3
Book : Science Ncert Solutions | Chapter-11 Science
(vi) Sweat contains water and salts.
(vii) Kidneys eliminate the waste materials in the liquid form called urine.
(viii) Water reaches great heights in the trees because of suction pull caused by
transpiration.
Page : 131 , Block Name : Exercise
Q3 Choose the correct option:
(a) In plants, water is transported through
(i) xylem
(ii) phloem
(iii) stomata
(iv) root hair
(b) Water absorption through roots can be increased by keeping the plants
(i) in the shade
(ii) in dim light
iii. under the fan
iii. covered with a polythene bag
Answer. (a) (i) xylem
(b) (iii) under the fan
Q4 Why is transport of materials necessary in a plant or in an animal? Explain.
Answer. Transport of materials is necessary in both plants and animals as every cell needs a regular supply
of nutrients and oxygen for releasing energy through respiration. The food that we eat is broken down into
smaller components to be absorbed by the cells. The oxygen that we inhale is also transported to all the
cells of the body. Our body also requires a constant removal of waste materials such as carbon dioxide. For
the transport of all these materials (food, oxygen, and wastes), our body has a specialised transport
system. Similarly, in plants, the transport of water and food is accomplished with the help of a complex
transport system.
Q5 What will happen if there are no platelets in the blood?
Answer. If there are no platelets in the blood, then the blood would not be able to clot. A clot is formed
because of platelets. They release blood clotting chemicals at the site of injury. These chemicals form a
clot and prevent further bleeding.
Q6 What are stomata? Give two functions of stomata.
Answer. Stomata are tiny pores present on the surface of a leaf. Functions of stomata:
(a) Stomata help in the exchange of gases.
(b) Evaporation of water from the leaf surface occurs through stomata.
Page 2 of 5 Aglasem Schools
(vi) Sweat contains water and salts.
(vii) Kidneys eliminate the waste materials in the liquid form called urine.
(viii) Water reaches great heights in the trees because of suction pull caused by
transpiration.
Page : 131 , Block Name : Exercise
Q3 Choose the correct option:
(a) In plants, water is transported through
(i) xylem
(ii) phloem
(iii) stomata
(iv) root hair
(b) Water absorption through roots can be increased by keeping the plants
(i) in the shade
(ii) in dim light
iii. under the fan
iii. covered with a polythene bag
Answer. (a) (i) xylem
(b) (iii) under the fan
Q4 Why is transport of materials necessary in a plant or in an animal? Explain.
Answer. Transport of materials is necessary in both plants and animals as every cell needs a regular supply
of nutrients and oxygen for releasing energy through respiration. The food that we eat is broken down into
smaller components to be absorbed by the cells. The oxygen that we inhale is also transported to all the
cells of the body. Our body also requires a constant removal of waste materials such as carbon dioxide. For
the transport of all these materials (food, oxygen, and wastes), our body has a specialised transport
system. Similarly, in plants, the transport of water and food is accomplished with the help of a complex
transport system.
Q5 What will happen if there are no platelets in the blood?
Answer. If there are no platelets in the blood, then the blood would not be able to clot. A clot is formed
because of platelets. They release blood clotting chemicals at the site of injury. These chemicals form a
clot and prevent further bleeding.
Q6 What are stomata? Give two functions of stomata.
Answer. Stomata are tiny pores present on the surface of a leaf. Functions of stomata:
(a) Stomata help in the exchange of gases.
(b) Evaporation of water from the leaf surface occurs through stomata.
Page 2 of 5 Aglasem Schools
Page 4
Book : Science Ncert Solutions | Chapter-11 Science
Functions of stomata
Q7 Does transpiration serve any useful function in the plants? Explain.
Answer. Transpiration is the evaporation of water from the plants. The water evaporates
through the stomata present on the surface of the leaves. Transpiration is mainly responsible for the loss
of water that was absorbed by the plants. However, it is important for plants as it helps in the movement of
water to the top of tall trees. As a result, it helps in the distribution of water throughout the plant body. It
also helps in cooling the plant.
Q8 Given below is a square of letters in which are hidden different words related to respiration in
organisms. These words may be present in any direction — upwards, downwards, or along the diagonals.
Find the words for your respiratory system. Clues about those words are given below the square.
(i) The air tubes of insects
(ii) Skeletal structures surrounding chest cavity
(iii) Muscular oor of chest cavity
(iv) Tiny pores on the surface of leaf
(v) Small openings on the sides of the body of an insect
Page 3 of 5 Aglasem Schools
Functions of stomata
Q7 Does transpiration serve any useful function in the plants? Explain.
Answer. Transpiration is the evaporation of water from the plants. The water evaporates
through the stomata present on the surface of the leaves. Transpiration is mainly responsible for the loss
of water that was absorbed by the plants. However, it is important for plants as it helps in the movement of
water to the top of tall trees. As a result, it helps in the distribution of water throughout the plant body. It
also helps in cooling the plant.
Q8 Given below is a square of letters in which are hidden different words related to respiration in
organisms. These words may be present in any direction — upwards, downwards, or along the diagonals.
Find the words for your respiratory system. Clues about those words are given below the square.
(i) The air tubes of insects
(ii) Skeletal structures surrounding chest cavity
(iii) Muscular oor of chest cavity
(iv) Tiny pores on the surface of leaf
(v) Small openings on the sides of the body of an insect
Page 3 of 5 Aglasem Schools
Page 5
Book : Science Ncert Solutions | Chapter-11 Science
(vi) The respiratory organs of human beings
(vii) The openings through which we inhale
(viii) An anaerobic organism
(ix) An organism with tracheal system
(i) Trachea
(ii) Ribs
(iii) Diaphragm
(iv) Stomata
(v) Spiracles
(vi) Lungs
(vii) Nostrils
(viii) Yeast
Q9 Why is blood needed by all the parts of a body?
Answer. Blood is needed by all parts of the body as it is an important part of the transport system of our
body. It performs the following important functions:
(i) It transports 02 from the lungs to all the body cells.
(ii) It carries C02, a waste product back to the lungs so that it can be exhaled easily.
(iii) It transmits heat, thus regulating the body temperature.
(iv) It also ghts off diseases and infections.
Q10 What makes the blood look red?
Answer. The presence of haemoglobin, a red pigment in the red blood cells (RBCs) makes blood appear red
in colour. The haemoglobin carries oxygen and transports it to all the parts of the body.
Q11 Describe the function of the heart.
Answer. The human heart is divided into four chambers. The upper two chambers are called right and left
atrium and the lower two chambers are called the right and left ventricles. Right atrium receives carbon
Page 4 of 5 Aglasem Schools
(vi) The respiratory organs of human beings
(vii) The openings through which we inhale
(viii) An anaerobic organism
(ix) An organism with tracheal system
(i) Trachea
(ii) Ribs
(iii) Diaphragm
(iv) Stomata
(v) Spiracles
(vi) Lungs
(vii) Nostrils
(viii) Yeast
Q9 Why is blood needed by all the parts of a body?
Answer. Blood is needed by all parts of the body as it is an important part of the transport system of our
body. It performs the following important functions:
(i) It transports 02 from the lungs to all the body cells.
(ii) It carries C02, a waste product back to the lungs so that it can be exhaled easily.
(iii) It transmits heat, thus regulating the body temperature.
(iv) It also ghts off diseases and infections.
Q10 What makes the blood look red?
Answer. The presence of haemoglobin, a red pigment in the red blood cells (RBCs) makes blood appear red
in colour. The haemoglobin carries oxygen and transports it to all the parts of the body.
Q11 Describe the function of the heart.
Answer. The human heart is divided into four chambers. The upper two chambers are called right and left
atrium and the lower two chambers are called the right and left ventricles. Right atrium receives carbon
Page 4 of 5 Aglasem Schools
Page 6
Book : Science Ncert Solutions | Chapter-11 Science
dioxide-rich right ventricle, which contracts and pumps blood to the lungs.
Flow of blood in the human heart
On the other hand, oxygen rich blood from the lungs returns to the left atrium. From the left atrium, blood
enters left ventricle. Left ventricle contracts and pumps the blood to all parts of the body. Hence, the
rhythmic contraction and expansion of various chambers of the heart maintains the transport of oxygen to
all parts of the body.
Q12 Why is it necessary to excrete waste products?
Answer. All cells of our body produce waste products. These waste products are toxic to the body and
therefore need to be excreted out. This process of removing waste products produced in the cells of living
organisms is called excretion.
Q13 Draw a diagram of the human excretory system and label the various parts.
Page 5 of 5 Aglasem Schools
dioxide-rich right ventricle, which contracts and pumps blood to the lungs.
Flow of blood in the human heart
On the other hand, oxygen rich blood from the lungs returns to the left atrium. From the left atrium, blood
enters left ventricle. Left ventricle contracts and pumps the blood to all parts of the body. Hence, the
rhythmic contraction and expansion of various chambers of the heart maintains the transport of oxygen to
all parts of the body.
Q12 Why is it necessary to excrete waste products?
Answer. All cells of our body produce waste products. These waste products are toxic to the body and
therefore need to be excreted out. This process of removing waste products produced in the cells of living
organisms is called excretion.
Q13 Draw a diagram of the human excretory system and label the various parts.
Page 5 of 5 Aglasem Schools
Document Details
| Board / Org | NCERT |
| Exam | Class 7 |
| Type | Solution |
| Pages | 6 |
| Updated | 30 Apr 2026 |