NCERT Solutions for Class 7 Science Chapter 6 Respiration in Organisms

The respiration in organisms class 7 question answer guide explains how living things get energy from the food they eat. In this chapter, you learn about breathing and how oxygen helps break down glucose inside cells. These solutions provide clear steps to understand how humans, animals, and even tiny insects breathe to stay alive and active.

Vishwas Diwas With PW: India's Biggest Education Festival Live from 28th Feb 2026

Basics of Respiration in Organisms Class 7

To start with the respiration in organisms class 7 question answer, you must know that respiration is a biological process. It is not just breathing; it is the way cells release energy. There are two main types: Aerobic respiration, which uses oxygen, and Anaerobic respiration, which happens without oxygen. Understanding this is the best way to start your biology lesson.

In your respiration in organisms class 7 ncert question answer study, you will see that breathing is just one part of the story. Breathing is the physical act of taking in air rich in oxygen and giving out air rich in carbon dioxide. The number of times a person breathes in one minute is called the breathing rate. 

Respiration in Organisms Class 7 NCERT Question Answer

When you work on the respiration in organisms class 7 ncert question answer, you will learn how humans breathe. Air enters through our nostrils and moves down the windpipe into the lungs. The lungs are located in the chest cavity, which is surrounded by ribs. A large, flat muscle called the diaphragm sits at the bottom of the chest cavity.

The NCERT notes explain that during inhalation, the ribs move up and the diaphragm moves down. This makes the chest space bigger so air can rush in. During exhalation, the ribs move down and the diaphragm moves up, pushing the air out. 

Respiration in Animals Class 7 Question Answer

Sometimes the book talks about other creatures, so you need the respiration in animals class 7 question answer section. Not all animals have lungs like humans. For example, cockroaches have small openings called spiracles on the sides of their bodies. These lead to a network of air tubes called tracheae that carry oxygen to every cell.

You can use a respiration in organisms class 7 question answer to learn about:

• Earthworms: They breathe through their moist and slimy skin.

• Fishes: They use gills to take in oxygen that is dissolved in water.

• Frogs: They are special because they can breathe through both lungs and their moist skin.

The process of respiration in animals class 7 question answer also covers why we get muscle cramps. When we run fast, our muscles breathe without oxygen and make lactic acid, which causes the cramp.

Using Respiration in Organisms Class 7 Question Answer PDF

A respiration in organisms class 7 question answer pdf download is very helpful for doing homework. You can quickly see the differences between breathing and cellular respiration. Cellular respiration is a chemical change that happens inside the cell to release energy. According to the NCERT solutions, yeast is a single-celled organism that respires anaerobically to produce alcohol.

Plants take in oxygen and give out carbon dioxide just like us! They use tiny pores on their leaves called stomata for this gas exchange. Even the roots of plants need oxygen from the soil to survive. When you use your respiration in organisms class 7 question answer notes, try to think about how every living thing is "burning" food for energy.

• Check the end products of anaerobic respiration in yeast vs humans.

• Remember that we exhale more carbon dioxide than we inhale.

• Look for the role of the diaphragm in the breathing process.

Tips for Respiration in Organisms Class 7 NCERT Question Answer

For your exam, follow the respiration in organisms class 7 ncert question answer style. Teachers want to see that you know the chemical equations. For aerobic respiration, remember: Glucose + Oxygen  \rightarrow  Carbon Dioxide + Water + Energy. Writing these equations shows you understand the science clearly.

Another helpful tip is to learn the "lime water test." If you blow air from your mouth into lime water, it turns milky. This proves that the air we breathe out contains carbon dioxide. At the end of the day, respiration is just the way nature powers every living thing on Earth!

Exam Tips for Respiration in Organisms Class 7th Question Answer

For your exam, follow the respiration in organisms class 7 ncert question answer style. Teachers want to see that you know the chemical equations. For aerobic respiration, remember:

Glucose + Oxygen \rightarrow Carbon Dioxide + Water + Energy

Writing these equations shows you understand the science clearly. For anaerobic respiration in muscles, the end product is Lactic Acid.Shutterstock Explore

Another helpful tip is to learn the "lime water test." If you blow air from your mouth into lime water, it turns milky. This proves that the air we breathe out contains carbon dioxide. When it all boils down to it, respiration is just the way nature powers every living thing on Earth! Don't forget that even root hairs in the soil take in oxygen to keep the plant healthy.

Make After-School Learning Easy and Enjoyable with CuriousJr

Looking for online tuition classes that help your child learn better and stay engaged? CuriousJr School Online Classes make learning simple through live interactive sessions, real-life examples, and fun activities that spark curiosity.

Students receive personal guidance from two dedicated mentors, ensuring individual attention. Visual and hands-on learning methods help concepts become clear faster. The curriculum is aligned with CBSE, ICSE, and State Boards, supported by regular quizzes, practice worksheets, and progress tracking.

CuriousJr covers Maths, Science, English, and Social Studies in a supportive and enjoyable environment. Book a demo class today and see how CuriousJr helps your child learn with confidence.