Aakash Repeater Courses
ApplyTake Aakash iACST and get instant scholarship on coaching programs.
Search Colleges, Exams, Schools & more
NCERT Solutions for Class 7 Science Chapter 7 Heat Transfer in Nature
Edited By Irshad Anwar | Updated on Jun 18, 2025 02:11 PM IST
Class 7 Science Chapter 7, Transport in Animals and Plants, describes how living things transport useful substances such as oxygen, food, and water around their bodies. In animals, the circulatory system carries oxygen and nutrients to every cell and takes away waste products. In plants, transport occurs through xylem and phloem, specialised tissues that transport water and nutrients. The NCERT Solutions of this chapter also deal with processes like excretion in animals and transpiration in plants, and how waste is efficiently eliminated.
This Story also Contains
- Download PDF of NCERT Solutions for Class 7 Science Chapter 7
- Solved Exercise Questions of NCERT Solutions for Class 7 Science Chapter 7
- Important Topics of Chapter 7:Transportation in Animals and Plants
- Approach to Solve NCERT Solutions for Class 7 Science Chapter 7 "Transportation in Animals and Plants"
- Important Question on Chapter 7 Transportation in Animals and Plants
- NCERT Solutions for Class 7 Science Chapter-Wise
Students get to know interesting facts like how fish eject ammonia in water directly and birds excrete uric acid in semi-solid form. NCERT Solutions for Class 7 offer easy, simple explanations to questions given in textbooks, making it easier for students to understand critical topics like the human circulatory system, plant transport systems, and their implications. These answers are meant to help learners in preparing enough for exams and gaining a solid understanding of the subject. This makes the NCERT Solutions for Class 7 Science Chapter 7, Transportation in Animals and Plants, a necessary study resource.
Download PDF of NCERT Solutions for Class 7 Science Chapter 7
You can download the PDF from the link below:
Solved Exercise Questions of NCERT Solutions for Class 7 Science Chapter 7
The solutions are given in sequence as per the NCERT textbook data:
Q1. Match structures given in Column I with functions given in Column II.
Column I Column II
(i) Stomata (a) Absorption of water
(ii) Xylem (b) Transpiration
(iii) Root hairs (c) Transport of food
(iv) Phloem (d) Transport of water
(e) Synthesis of carbohydrates
Answer: The matched structures of column I with functions of column II is given below:
| Column I | Column II |
| (i) Stomata | (b) Transpiration |
| (ii) Xylem | (d) Transport of water |
| (iii) Root hairs | (a) Absorption of water |
| (iv) Phloem | (c) Transport of food |
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 the 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 blood cells.
(iii) Arteries and veins are joined by a network of capillaries.
(iv) The rhythmic expansion and contraction of the heart are called a heartbeat.
(v) The main excretory product in human beings is urea.
(vi) Sweat contains water and salt.
(vii) Kidneys eliminate the waste materials in the liquid form called urine.
(viii) The water reaches great heights in the trees because of the suction pull caused by transpiration
Q3. Choose the correct option:
(a) In plants, water is transported through
(i) xylem
(ii) phloem
(iii) stomata
(iv) root hair
Answer: In plants, water is transported through the xylem.
So, the correct answer is (i) xylem.
Q3. Choose the correct option:
(b) Water absorption through roots can be increased by keeping the plants
(i) in the shade
(ii) in dim light
(iii) under the fan
(iv) covered with a polythene bag
Answer: Water absorption through roots can be increased by keeping the plants under the fan because the transpiration process is boosted.
Hence, the correct answer is (iii) under the fan.
Q4. Why is the transport of materials necessary in a plant or in an animal? Explain
Answer: Transport of materials is necessary for plants and animals because due to transportation the nutrients and oxygen are made available to all the parts of the body.
If the transport of necessary nutrients and oxygen does not take place in the body, the body will not be able to survive.
Q5. What will happen if there are no platelets in the blood?
Answer: Blood platelets help to clot the blood. When there is an injury occurs, blood starts flowing,g and if there are no platelets,
the blood will not be able to clot and keep on flowing. Therefore can cause death because of the huge loss of blood.
Q6. What are stomata? Give two functions of stomata.
Answer: There are small openings or pores on the lower surface of the leaves called stomata these opening are surrounded with guard cells.
The two functions of stomata are:
(i) Transpiration is possible through stomata, i.e., excess water loss from the plant.
(ii) Absorption of water from the roots, when there is the loss of water from the stomata creates an upward pull.
(iii) Exchange of gases.
Q7. Does transpiration serve any useful function in the plants? Explain
Answer: Transpiration helps in many ways:
(i) To enhance the absorption of water and dissolved minerals by the creation of a suction pull.
(ii) It helps in the loss of excess water from the plant.
(iii) Photosynthesis is possible because of the transportation of water and minerals to the leaves.
Q8. What are the components of blood?
Answer: There are four components of blood:
(i) Platelets: It helps in the formation of blood clots thus preventing the excessive bleeding from the wounds.
(ii) Plasma: They are present in the blood cells and also contain dissolved nutrients.
(iii) Red blood cells (RBC): They are the most abundant cells in the blood. RBC contains a red pigment called hemoglobin which carries oxygen and transports it to all the parts of the body.
(iv) White blood cells (WBC): They help the body fight against diseases by changing their shapes. Thus, they constitute the immune system of the body.
Q9. Why is blood needed by all the parts of the body?
Answer: Blood is needed by all parts of the body because it is an important part of the transport system of our body and performs the following important functions:
(i) Transports oxygen from the lungs to all the body cells.
(ii) Carries carbon dioxide, waste products back to the lungs so that it can be exhaled easily.
(iii) Blood fights against diseases and infections.
Q10. What makes the blood look red?
Answer: Blood looks red because of the presence of haemoglobin, a red pigment in the red blood cells or RBCs that 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,where the upper two chambers are called the right and left atria and the lower chambers are called the right and left ventricles, Therefore, the functions of the heart are as follows:
(i) The right atrium receives carbon dioxide-rich blood from the body. Blood from the right atrium enters the right ventricle, which contracts and pumps the blood to the lungs.
(iii) Oxygen-rich blood from the lungs returns to the left atrium, then blood enters the left ventricle, which contracts and pumps the blood to all parts of the body.
Hence basic function is to beat with rhythmic contraction and expansion throughout life and transport the blood as a pump.
Q12. Why is it necessary to excrete waste products?
Answer: The waste produced by our cells is toxic and therefore needs to be excreted. The process of removal of 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.
Answer: The labelled diagram of the human excretory system is shown below:
NCERT Solutions for Class 7- Subject Wise
Important Topics of Chapter 7:Transportation in Animals and Plants
Topics and Subtopics in Chapter Transportation in Animals and Plants:
Transportation in Animals and Plants |
Subtopics in Transportation in Animals and Plants Class 7 NCERT Solutions
The main subtopics of the chapter are:
Blood Vessels
Heart
Excretory System in Humans
Transport of Water and Minerals
Approach to Solve NCERT Solutions for Class 7 Science Chapter 7 "Transportation in Animals and Plants"
Start by carefully reading the chapter to understand how water, nutrients, gases, and waste products are transported in both plants and animals.
Focus on the circulatory system in animals, including the heart, blood, arteries, veins, and capillaries, and understand their functions and interconnections.
Study the transportation system in plants, highlighting the roles of xylem and phloem, and processes like transpiration and absorption through root hairs.
Use diagrams extensively to picture structures and processes, which aids in answering both diagram-based and descriptive questions.
Practice all exercise questions and previous year problems to build clarity and confidence, ensuring accurate and well-structured answers in exams
Also, check NCERT Books and NCERT Syllabus here
Important Question on Chapter 7 Transportation in Animals and Plants
Question 1: Explain the roles played by the given parts of the human circulatory system:
a) Heart
b) Blood
Answer:
Heart: A muscular organ known as the heart serves as a pump to facilitate the flow of blood within the body. There are four chambers two atria and two ventricles that function collectively. The right side sends deoxygenated blood to the lungs, while the left side sends oxygenated blood to the body. The rhythmic contraction and relaxation of the heart allow for a constant flow of blood. It is the circulatory system's central unit.
Blood: Blood is a liquid connective tissue that carries nutrients, gases, hormones, and wastes. It is composed of red blood cells (RBCs), white blood cells (WBCs), platelets, and plasma.RBCs transport oxygen, WBCs fight infection, and platelets contribute to clotting. Blood maintains homeostasis, controls body temperature, and controls pH and electrolytes. It provides the smooth operation of all organs of the body.
NCERT Solutions for Class 7 Science Chapter-Wise
The chapterwise solutions are given below:
Frequently Asked Questions (FAQs)
1. Why is transportation of materials necessary in plants and animals?
Transportation is essential because cells in different parts of plants and animals need nutrients, oxygen, and water for metabolic activities, and waste products must be removed to maintain healthy functioning.
2. How is water transported in plants?
Water is absorbed by root hairs from the soil and transported upwards through the xylem vessels to different parts of the plant. Transpiration through stomata creates a suction pull that helps in the upward movement of water.
3. What is the role of phloem in plants?
Phloem transports food (mainly sugars) from the leaves, where it is synthesized during photosynthesis, to other parts of the plant for growth, storage, and energy.
4. How does the circulatory system work in humans?
The circulatory system consists of the heart, blood, and blood vessels. The heart pumps oxygenated blood from the lungs to the body and deoxygenated blood from the body to the lungs for oxygenation, ensuring continuous supply of oxygen and nutrients.
5. What are stomata and what functions do they perform?
Stomata are small pores on the surface of leaves that allow exchange of gases (carbon dioxide and oxygen) and enable transpiration, the loss of water vapor, which helps in water movement within the plant.
6. What is the role of platelets in the blood?
Platelets help in clotting blood to prevent excessive bleeding during injuries.
7. Define pulse rate and how it is measured.
Pulse rate is the number of heartbeats per minute. It is measured by counting pulses at points like the wrist or neck.
8. What are arteries and veins? How are they different?
Arteries: Carry oxygenated blood away from the heart; have thick walls.
Veins: Carry deoxygenated blood back to the heart; have thinner walls and valves.
9. What is the function of the excretory system in humans?
The excretory system removes waste products like urea, excess salts, and water from the body.
10. How do the kidneys help in the excretion process?
Kidneys filter blood to remove waste products and form urine.
Also Read
Articles
Popular Questions
A block of mass 0.50 kg is moving with a speed of 2.00 ms-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is
| Option 1)
|
Option 2)
|
| Option 3)
|
Option 4)
|
An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the range
| Option 1)
|
Option 2)
|
| Option 3)
|
Option 4)
|
A particle is projected at 600 to the horizontal with a kinetic energy . The kinetic energy at the highest point
| Option 1)
|
Option 2)
|
| Option 3)
|
Option 4)
|
In the reaction,
| Option 1)
|
Option 2)
|
| Option 3)
|
Option 4)
|
How many moles of magnesium phosphate, will contain 0.25 mole of oxygen atoms?
| Option 1)
0.02 |
Option 2)
3.125 × 10-2 |
| Option 3)
1.25 × 10-2 |
Option 4)
2.5 × 10-2 |
Colleges After 12th
Popular Course After 12th
Study Resources, Applications and Opportunities
NEET Most scoring concepts
Get nowThis ebook serves as a valuable study guide for NEET 2025 exam.
NEET Previous 10 Year Questions
Get nowThis e-book offers NEET PYQ and serves as an indispensable NEET study material.
JEE Main Important Physics formulas
Get nowAs per latest syllabus. Physics formulas, equations, & laws of class 11 & 12th chapters
JEE Main Important Chemistry formulas
Get nowAs per latest syllabus. Chemistry formulas, equations, & laws of class 11 & 12th chapters
JEE Main high scoring chapters and topics
Get nowAs per latest 2024 syllabus. Study 40% syllabus and score upto 100% marks in JEE
News and Notifications
Ask
Question
Student Community: Where Questions Find Answers
Back to top