NCERT Solutions Class 10 Science Chapter 6

NCERT Solutions for Class 10 Science Chapter 6

Class 10 is one of the hardest phases of a child’s academic life. And Extramarks’ NCERT Solutions for Class 10 can help them sail through it with flying colors. Even when it is something as complex as chapter 6 Science Class 10, NCERT Solutions for Class 10 Science Chapter 6 can prove to be of great assistance.

Extra marks NCERT Solutions of Class 10 Science Chapter 6 are prepared by expert faculty who specialize in science and drafting content for CBSE examinations. The experts make sure that the solutions are drafted in a step-by-step and easy-to-understand manner so that students can easily understand each solution.

Access NCERT Solutions Class 10 for Biology Chapter 6 – Life Processes

For the majority of Class 10 students, Science is a subject that is as tough and uninteresting. This is why, to help students with their Science preparation, Extramarks offers detailed NCERT Solutions to all the chapters covered in the Class 10 Science NCERT textbook.

Chapter 1 Chemical Reactions and Equations
Chapter 2 Acids, Bases and Salts
Chapter 3 Metals and Non-metals
Chapter 4 Carbon and Its Compounds
Chapter 5 Periodic Classification of Elements
Chapter 6 Life Processes
Chapter 7 Control and Coordination
Chapter 8 How do Organisms Reproduce?
Chapter 9 Heredity and Evolution
Chapter 10 Light Reflection and Refraction
Chapter 11 Human Eye and Colourful World
Chapter 12 Electricity
Chapter 13 Magnetic Effects of Electric Current
Chapter 14 Sources of Energy
Chapter 15 Our Environment
Chapter 16

Life Processes Class 10 NCERT Solutions

Every person at a certain point in their life is curious to know how it all started…how did life start on earth, why did it start on earth and how did we all manage to survive while some other species became extinct. Chapter 6 Science Class 10 gives a chance for students to satiate their curiosity. Along with the elements mentioned prior, the chapter also gives an overview of the bodily processes like metabolism, reproduction, etc. that are required for functioning, maintenance, and survival.

Life Processes Class 10 NCERT Solutions

Everything that you do from breathing to eating to digesting, there is a system in your body that assists you to carry these functions out smoothly. Likewise, plants and animals are equipped with this system as well. Chapter 6 Science Class 10 teaches about the various life processes of different living organisms. As there is so much information amalgamated in this chapter, it is only natural for students to neglect a few pointers or topics that do not seem so catchy to them. And Life Processes Class 10 NCERT Solutions exactly solves this problem.

Another reason that makes Extramarks’ NCERT solutions for class 10 science chapter 6 special is that it is prepared by passionate subject experts who know how to make everything easy and understandable. From explaining textual questions in an elaborate manner for quick grasping to ensuring they are CBSE syllabus & board compliant, these NCERT Solutions by Extramarks have everything that a student needs for an outstanding result.

Q.1 The kidneys in human beings are a part of the system for

  1. nutrition.
  2. respiration.
  3. excretion.
  4. transportation.


c) Excretion

Explanation: Kidney is a bean-shaped organ. It helps in the removal of metabolic wastes.

Q.2 The xylem in plants are responsible for

  1. transport of water.
  2. transport of food.
  3. transport of amino acids.
  4. transport of oxygen.


a) transport of water

Explanation: Xylem is the vascular tissue that facilitates the movement of water in plants. Movement of food and amino acids takes place through the vascular tissue phloem. Transport of oxygen in plants occurs through stomata.

Q.3 The autotrophic mode of nutrition requires

  1. carbon dioxide and water.
  2. chlorophyll.
  3. sunlight.
  4. all of the above.


d) all of the above

Explanation: Autotrophic nutrition takes place by the process of photosynthesis. Carbon dioxide, water, chlorophyll and sunlight are required to carry out the process of photosynthesis.

Q.4 The breakdown of pyruvate to give carbon dioxide, water and energy takes place in

  1. cytoplasm.
  2. mitochondria.
  3. chloroplast.
  4. nucleus.


a) mitochondria.

Explanation: Breakdown of glucose into pyruvate takes place in cytoplasm. Then further breakdown of pyruvate into CO2, water and energy takes place in mitochondria.

Q.5 How are fats digested in our bodies? Where does this process take place?


From the stomach, partially digested food, that is acidic, enters the small intestine. Bile juice is released into the small intestine through the gall bladder. The acidity of the partially digested food is nutralised by the bile salts present in the bile juices. Bile salts also emulsify fat molecules by breaking their large globules into many small globules so that the pancreatic enzymes can act effectively on them. Pancreatic enzyme like lipase present in pancreatic juice digests fats and converts them into fatty acid and glycerol.

This entire process takes place in the small intestine.

Q.6 What is the role of saliva in the digestion of the food?


Saliva, a secretion of salivary glands, helps in digestion of food in the following two ways:

  1. The saliva moistens the food and helps in its easy swallowing and movement in oesophagus.
  2. The saliva contains an enzyme called salivary amylase that initiates the breakdown of carbohydrates such as starch into sugar.

Q.7 What are the necessary conditions for autotrophic nutrition and what are its by products?


The necessary conditions for autotrophic nutrition are the availability of:
1. Carbon dioxide
2. Sunlight (source of energy)
3. Chlorophyll pigment (that captures energy)
4. Water
The products formed are carbohydrate (glucose) and oxygen.

6CO2+6H2O chlorophylllight energy C6H12O6+6O2

Q.8 What are the differences between aerobic and anaerobic respiration. Name some organisms that use the anaerobic mode of respiration.


Differences between aerobic respiration and anaerobic respiration are:

Aerobic respiration Anaerobic respiration
It occurs in the presence of oxygen. It occurs in the absence of oxygen.
The final products are carbon dioxide, energy and water The final products are alcohol, carbon dioxide and energy
The amount of energy released is high The amount of energy released is lower than aerobic respiration.
It takes place in cytoplasm and mitochondria of a cell. It takes place in cytoplasm only.

Some of the organisms that use anaerobic mode of respiration are bacteria and fungi like yeast.

Q.9 How are the alveoli designed to maximise the exchange of gases?


The alveoli are small balloon-like structures present in the lungs. The walls of alveoli consist of extensive network of blood capillaries. Each lung contains 300-350million alveoli. The alveolar surface when spread out covers the area about 80m2. This large surface area makes the gaseous exchange efficient.

Q.10 What would be the consequences of a deficiency of haemoglobin in our bodies?


Haemoglobin is the respiratory pigment in humans. It facilitates the transportation of oxygen in the body cells to carry out cellular respiration. Thus, deficiency of haemoglobin can directly affect the oxygen supplying capacity of the blood which can further lead to deficiency of oxygen in our body cells. The deficiency of haemoglobin also causes disease such as anaemia.

Q.11 Describe double circulation in human beings. Why is it necessary?


Circulation in human beings comprises two phases: pulmonary circulation and systemic circulation. During each cycle of the circulation, the blood goes through the heart twice.
Flow of blood in the heart
The human heart comprises four chambers: the right atrium, the right ventricle, the left atrium and the left ventricle.

The superior and inferior vena cava collects deoxygenated blood from the upper and lower regions of the body respectively and transfers this de-oxygenated blood to the right atrium of the heart.

The right atrium then contracts and transfers the deoxygenated blood to the right ventricle.

From the right ventricle, the deoxygenated blood is then transferred into the two pulmonary arteries, which pumps the blood to the lungs for oxygenation.

From the lungs, oxygenated blood is transferred to the left atrium of the heart through the pulmonary veins. This complete process is called pulmonary circulation.

Then the left atrium contracts and pushes the oxygenated blood into the left ventricle.

The left ventricle then contracts and forces the blood into the aorta which gives rise to many arteries that distribute the oxygenated blood to all the regions of the body.

This completes the systemic circulation.

Importance of Double blood circulation:

The separation of oxygenated and deoxygenated blood in the separate chambers of heart and blood vessels allows a more efficient supply of oxygen to the body cells.

The sufficient system of oxygen supply is very useful in animals that have high energy requirements to maintain their body temperature such as warm-blooded animals like birds and mammals.

Q.12 What are the differences between the transport of materials in xylem and phloem?


Differences between the transport of materials in xylem and phloem are:

Transport of materials in xylem Transport of materials in phloem
Xylem facilitates the transport of water in plants. Phloem facilitates the transport of food in plants.
Transport of water is in upward direction from roots to the other parts of the plants Transport of food occurs in both the directions i.e., upward and downward.
Simple physical forces like transpiration pull play an important role in the transport of water in xylem. Energy in the form of ATP is required in the transport of food in phloem.


Q.13 Compare the functioning of alveoli in lungs and nephrons in the kidneys with respect to their structure and functioning.


Alveoli Nephron
Structure They are tiny balloon-like structure present inside the lungs. Nephron is the structural and functional unit of kidney. They are present in the form of tubular structures inside the kidneys.
The walls of alveoli are one cell thick and posses an extensive network of blood capillaries that help in exchange of gases. It is composed of glomerulus, Bowman’s capsule and a long renal tubule and is surrounded by the cluster of thin walled blood capillaries.
Function The alveoli function as the sites for gaseous exchange. The exchange of O2 and CO2 takes place between the blood of the capillaries that surround the alveoli and the gases present in the alveoli. Being the basic filtration unit of kidney, nephron removes the nitrogenous wastes such as urea or uric acid from the blood and forms urine. Renal artery divides into many capillaries in glomerulus of the nephron. The blood gets filtered in the glomerulus and then the filtrate passes through the tubules of the nephron and gets collected in a collecting duct. As the filtrate flows in the tube, some substances such as glucose, amino acids and water are selectively re- absorbed and get converted into urine. Urine from many nephrons is collected into the collecting duct that passes the urine into the ureter.


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FAQs (Frequently Asked Questions)

1. How can I make Class 10 Science fun to study?

If you perceive every concept as something you have to mug up for the sake of examination, you will never enjoy studying Science or any subject for that matter. A change of mindset is the first step to enjoying learning. Think of education as a way to expand your horizons in a way that aids you to build your career and elevates your personal growth. 

For instance, Chapter 6 Science Class 10 is a comprehensive take on the life processes of all beings – plants, animals, and humans. Would it be exceptionally fascinating to know how you & other living things managed to survive centuries of evolution? Or what happens when a morsel of food enters your body? Well,if you start pondering, everything around you can become intriguing.

Once you have started to change your perception of science, read Extramarks’ NCERT Solutions for Class 10 Science Chapter 6 and other chapters to amp up both your enthusiasm and marks more!

2. How to maximize my score in Class 10 Science?

  • Science is considered to be a  difficult subject in Class 10 CBSE Board Examination. However you can score as high as you aim with the right tactics and by referring to  Extramarks’ NCERT Solutions for Class 10 Science Chapter 6.
  •   Firstly, start studying well in advance. In fact,right from the beginning of your academic year.
  • Always read the chapter first and then follow up with the exercises given at the end. Try to solve the questions on your own and if you get stuck at a particular question,refer to the NCERT Solutions for Class 10 Science.These solutions have been prepared by experts and provide a step-by-step explanation to all the questions.
  • Whenever you study an answer or a chapter, do not resort to byhearting anything. Instead, try to understand the concept first. Once you do this, no matter how twisted the question is, you will always crack the answer.
  • Lastly, never ignore diagrams. You can also score full marks in long answers if you support your answer with well labeled diagrams.

3. What are a few important questions from Chapter 6 Science Class 10?

Chapter 6 Science Class 10 is an important chapter from the exam point of view as  a lot of questions are usually asked from it. Here is the question bank of important questions from Science Chapter 6 Class 10 with Solutions on how to answer them:

  •   What processes would you consider essential for maintaining life?

Ans: There are 6 processes that are essential for maintaining life. These include – nutrition, transportation, excretion, respiration, control, and coordination. Without these processes, an organism will not qualify as living.

  •   Where do plants get each of the raw materials required for photosynthesis?

Ans: Plants essentially require 4 raw materials for photosynthesis namely – Sunlight, water, carbon dioxide, and chlorophyll. These are obtained as follows:

–   Sunlight is obtained naturally from the sun.

–   Carbon dioxide is obtained from the surrounding atmosphere and absorbed through the stomata of the plant.

–   Water is taken from the soil in which the plant is planted and is absorbed by its roots.

–   Chlorophyll (present in all green parts of the plants) is the main component for photosynthesis. It is found in the plant organelle called a chloroplast.

For the entire list of important and frequently asked questions in board examination, please have a look at our NCERT Solutions of Class 10 Science Chapter 6.

4. Can I complete Science Chapter 6 Class 10 if I start at the last minute?

Ideally, no. You should always start your preparation well ahead of time so that you can get ample time before the examinations for revisions. However, if for some reason, you haven’t been able to give time to this Chapter and you have saved it till the last minute, prepare smartly. Go through the chapter once and follow the NCERT Solutions of Class 10 Science Chapter 6 to get a sense of what kind of questions can be asked from the chapter and how you would need to approach solving them.

5. What are some real-life insights from science chapter 6 class 10?

Science Chapter 6 Class 10 is a chapter that is vital from not only an exam point of view. Rather, it is also a pool of information about metabolism and processes that actually control the human body. For the optimal quality of life and healthy living, it is a no-brainer for humans to know these basics.

6. What exactly is NCERT Solutions for Class 10 Science Chapter 6?

NCERT Solutions for Class 10 Science Chapter 6 – Life Processes is a compilation of solutions to the questions asked in Chapter 6 of Class 10 Science NCERT textbook. The solutions are prepared by subject matter experts that have given special attention to provide accurate and detailed solutions. Students will find these resources useful for their exam preparation, last-minute revisions, and for any help with their assignments.

7. Why should I include Class 10 NCERT Solutions by Extramarks in my study routine?

When chapters are taught in school or when students choose to study by themselves, they might miss out on a lot of details. These little things are the key to securing the highest possible marks in the examination. By ensuring that every question of the chapter is explained to the T,  in the simplest language possible and just the way a CBSE examiner expects it,  Class 10 NCERT Solutions helps students to perform better. Furthermore, as Extramarks Class 10 NCERT Solutions are available on its app & website, a student can refer to them without any hindrance and at their convenience.