NCERT Solutions for Class 7 Science: If you have been promoted from class 6 to class 7, you will realise that science will include an interesting mix of chapters on nutrition of plants and animals, fibre to fabric, heat, light, forest, soil and much more. Since this is the start to some of the advanced science topics, NCERT solutions for class 7 science will be much useful for you to not just learn the chapters but also get good marks in your exams. You can use these solutions of NCERT for class 7 science as a reference when you are not able to solve any questions asked in the class or exam. Also, you can use these CBSE NCERT solutions for class 7 science as a quick revision of concepts before the exam to perform well. Not just science, NCERT solutions actually are good tools that give you the detailed answers so you know how to answer well and score more marks in the exam.
It would be wonderful if you had solutions of NCERT for class 7 maths in hand also as science and maths are the most scoring subjects. NCERT solutions for class 7 science are prepared keeping the CBSE science fundamental guidelines in mind.
How best to use the solutions of NCERT class 7 science?
Solutions of NCERT for class 7 science chapter 1 Nutrition in Plants: Food is essential for all living organisms to live. Plants are capable of making food by themselves but humans and animals are not. Plants use raw materials like water, carbon dioxide, and minerals for preparing their food. In the CBSE NCERT class 7 science chapter 1, you will study the different nutrition of plants, different types of plants based on the nutrition required for making food, how plants are making food(the process of photosynthesis), etc. In this chapter, you will get to know that how water and minerals absorbed by roots reach the leaves. Important topics that you will study in this chapter: mode of nutrition in plants, the food-making process of plants.
CBSE NCERT solutions for class 7 science chapter 2 Nutrition in Animals: You have already studied nutrition in plants, in chapter 1. Now its time to check the nutrition for animals and NCERT solutions for class 7 science for the same. Nutritions required for animals is relatively extensive and complex compare to nutrition for plants. Animals get their food from plants, either directly by eating plants or indirectly by eating animals that eat plants. Some animals eat both plants and animals. There are three types of animals Herbivores(eats only plants), carnivores(eat only other animals), Omnivores(eat both animals and plants). The basic nutrients required for animals are carbohydrates, proteins, vitamins, minerals, and nucleic acid, etc. In this chapter, you will learn nutrition in animals, digestion process of human beings, including all the organs function which are involved in this.
NCERT solutions for class 7 science chapter 3 - Fibre to Fabric: In class 6, you have already learnt about different types of fibres obtained from plants and animals as mentioned below
i) Plants: Fibres that we get from a plant source like cotton, jute, flex, and coconut fibres.
ii) Animals: Fibres that we get from an animal source like wool(from sheep, goat, camel), silk(from a silkworm).
In this chapter, you will learn how to obtain different fibres from animals and insects, different processes like rearing of silkworms as well as rearing and breeding of sheep, how to make fabric from these fibres. CBSE NCERT solutions for class 7 science will help you to know and understand the different processes involved in making fabric from these fibres.
Solutions of NCERT for class 7 science chapter 4 - Heat: In the previous, chapter we have learned about different types of fabric made from wool and cotton. We know that we wear woollen clothes in the winter, and cotton cloths in summer. Why do we wear woollen clothes in winter and cotton clothes in summer? What do woollen clothes keep us warm and why are cotton clothes comfortable to wear in summer?. The answers to all of this is given in the NCERT solutions for class 7 science chapter 4. The main topics that will be covered in this chapter are heat, how it transfers from one object to another, and what are the good conductors of heat, what are the bad conductors of heat, and insulator. You will also learn how to measure the temperature, about different types of thermometers.
CBSE NCERT solutions for class 7 science chapter 5 - Acids, Bases and Salts: We use substances like lemon, tamarind, common salt, sugar and vinegar in our daily life. If you taste these substances you will find that some substance tastes sour, some taste bitter, some taste sweet and some taste salty. Lemon is sour because it contains acid. Similarly, other tastes contain acids, base or slats. Everything belongs to a type of taste but we can not taste every substance, to find its nature. Litmus paper is one such tool to check if a substance is acidic or base. The pH meter is the scale through which you can measure the nature of the substance. In this chapter, we will learn about the properties of acid, base, and salts, different types of indicators, and neutralization, etc.
NCERT solutions for class 7 science chapter 6 - Physical and Chemical Changes Changes like milk converting to curd, dissolving of salt in the water, ice to water are commonly seen in our everyday life. There are mainly two types of changes that occur namely physical and chemical. A change in which a substance goes under the change in physical properties called a physical change. A change in which one or more new substances are formed is called a chemical change. CBSE NCERT solutions for class 7 science will help you understand the concepts behind these changes as well as more on chemical reactions, rusting etc.
Solutions of NCERT for class 7 science chapter 7 - Weather, Climate and Adaptations of Animals to Climate We come across about weather reports on radio, television, or newspaper every day to know the day-to-day condition of the atmosphere at a given place with respect to the temperature, humidity, rainfall, wind speed, etc. Weather is a complex phenomenon and can vary in a very short period of time. You must have seen bright sunshine in the morning and heavy rainfall in the evening. So it is not easy to predict the weather unless you are with the Meteorological Department of the Government which collects data on temperature, wind, etc., and predicts the weather. The average weather pattern taken over a long time, say 25 years, is called the climate of the place. This chapter will teach you about the weather, climate, and adaptations of animals to climate.
CBSE NCERT solutions for class 7 science chapter 8 - Winds, storms and cyclones The moving air is called wind. The swift movement of the falling water droplets along with the rising air creates lightning and sound. It is this event that we call a thunderstorm. The more air rushes in the center of the storm, it will create a system with very low pressure and high-speed wind revolving around it called cyclone. You must be thinking what are cyclones? How are they formed? Why are they so destructive? Solutions of NCERT for class 7 science chapter 7 will clear all these doubts. This chapter is all about how air exerts pressure, the relation of wind speed with pressure, how monsoon from, winds, storms, and cyclones, etc.
NCERT solutions for class 7 science chapter 9 - Soil Soil is the most important natural resource. It provides important nutrients to plants and is home for many organisms. Soil is important for agriculture, which provides us food, clothing, and shelter. In this chapter, you will study about the different types of soil, properties of soil like moisture in the soil, water absorption capacity, water holding capacity, different types of crops for different types of soil, soil erosion, soil layers, and soil horizons. You will also get to know that, soil holds water in it, which is called soil moisture. The capacity of soil to hold water called water holding capacity, which is important for various crops.
Solutions of NCERT for class 7 science chapter 10 - Respiration in Organisms You must have noticed when you run faster, you breath faster. Why is it so? Why do we breathe? In this chapter, you will get answers to all these questions and more. All the living organisms need energy even when they are sleeping or dormant. The food that we have stored contains some energy. This energy is released during respiration. The process of breakdown of food in the cell with the release of energy is called cellular respiration. Cellular respiration takes place in the cells of all organisms. There are some organisms like yeast that can live in the absence of air. Yeast breaks down the food and releases energy in the absence of oxygen. This process is called anaerobic respiration.
CBSE NCERT solutions for class 7 science chapter 11 - Transportation in Animals and Plants: In the previous chapters of NCERT class 7 science we have learnt that all living organism needs food, water, and oxygen for the survivals. Now all these organisms need a transportation system to transport the required substances to various of the body. Animals also need transport for waste removal from the body. In the solutions of NCERT for class 7 science of this chapter, you will study, transportation in animals and plants, where you will learn about the circulation system(blood, blood vessel, and heart, heartbeat), excretory system(kidney, urinary bladder, ureters), and transportation of substance in plants. You will also study how hemoglobin binds with oxygen and transports it to all the parts of the body and ultimately to all the cells, and how blood(white blood cells (WBC)) fight against germs that may enter our body.
NCERT solutions for class 7 science chapter 12 - Reproduction in Plants: Reproduction is a biological process by which new individual organisms produced from their parents. Each individual organism exists because of reproduction. It is a fundamental feature of all known life. There are different modes of reproduction. In this chapter, you will learn you about the different modes of reproduction in plants. There are mainly two types of reproductions in the plants.
i) Asexual reproduction: In asexual reproduction new plants are obtained without the production of seeds. There are different processes like vegetative propagation, budding, fragmentation, spore formations, etc.
ii) Sexual reproduction: In sexual reproduction new plants are obtained by the production of seeds. It involves various processes like pollination, fertilization, fruits, and seed formation, and seed dispersal.
Solutions of NCERT for class 7 science chapter 13 - Motion and Time: In everyday life, we see the vehicle move slower, some move faster at different times. If the vehicle moves on the road in the same direction we can easily tell which one is faster or which one slower but if the vehicle is moving in a different direction, how will you decide which vehicle moves fast, or which vehicle moves slow? In NCERT solutions for class 7 science chapter 13, you will get to know the answers to the above questions. You will learn about the motions and time of the motions as the names suggest. The speed of an object is the distance traveled divided by the time taken to cover that distance. Its basic unit is meter per second (m/s) and the motion of objects can be presented in pictorial form by their distance-time graphs.
CBSE NCERT solutions for class 7 science chapter 14 - Electric Current and its Effects: This chapter is very interesting as in this you will study the electric current, its flow, and its effect. It is convenient to represent electric components by symbols. Using these, an electric circuit can be represented by a circuit diagram. You will also learn about the battery, circuit diagram, electric components, electric bell, electromagnet(current-carrying coil of an insulated wire wrapped around a piece of iron) fuse, the heating effect of current(When an electric current flows through a wire, the wire gets heated), and magnetic effect of current.
NCERT solutions for class 7 science chapter 15 - Light: You must have seen headlamps of scooters, cars, engines of trains or a torch. It suggests that light travels along a straight line. In this chapter, you will study light and it's properties, a reflection of light, and different types of mirrors, the image in the mirror, lenses, images formed by lenses, properties of sunlight, prism, etc. There are two types of mirror concave mirrors, and a convex mirror. The concave mirror can form a real and inverted image. When the object is placed very close to the mirror, the image formed is virtual, erect and magnified. The image formed by a convex mirror is erect, virtual and smaller in size than the object. A convex lens can form a real and inverted image.
Solutions of NCERT for class 7 science chapter 16 - Water: A Precious Resource: You must have been heard of the slogan "Jal Hai, Toh Kal Hai" which means if you have water, you can think of the future. Every year March 22 is celebrated as "World Water Day", to attract attention towards the importance of water conservation. There is much shortage of water not only in our country but more than one-third of the people in the world could face water scarcity. So we must know how much water is left on our planet. This chapter, on water will tell you its value. You know that there is an uneven distribution of water and much of it is a result of human activities. You will also study the rapid growth of industries, increasing population, growing irrigation requirements, and mismanagement are some of the causes for water shortage.
CBSE NCERT solutions for class 7 science chapter 17 - Forests: Our Lifeline: In this chapter, you will study about our lifeline, which is forest. Forest comprises various plants, animals and micro-organisms. In a forest, trees form the uppermost layer, followed by shrubs. Herbs form the lowest layer of vegetation. Different layers of vegetation provide food and shelter for animals, birds, and insects. The various components of the forest are interdependent on one another.
NCERT solutions for class 7 science chapter 18 - Wastewater Story: This is the last chapter of the science NCERT textbook of class 7. In the CBSE NCERT solutions for class 7 science chapter 18, you will study that wastewater is treated in a sewage treatment plant. This is to reduce pollutants in wastewater to a level where nature can take care of it. Where underground sewerage systems and refuse disposal systems are not available, low-cost on-site sanitation system can be adopted. By-products of wastewater treatment are sludge and biogas. An open-drain system is a breeding place for flies, mosquitoes, and organisms which cause diseases.
Your homework will be easier with the solutions of NCERT class 7 science.
These NCERT solutions are available in easy to understand to language.
CBSE NCERT solutions for class 7 science provides in-depth knowledge of the concepts and chapters.
Scoring good marks in the exam is now a reality with the help of these solutions of NCERT.
Your fundamental concepts in science will be strong.
You will develop a logical approach and methodology towards science and other subjects.
Happy learning !!!
10. Tick the correct answer:
(d) A spore producing organism is
(i) rose (ii) bread mould (iii) potato (iv) ginger
10. Do you think an electromagnet can be used for separating plastic bags from a garbage heap? Explain.
9. Explain the relationship between sanitation and disease.