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NCERT Solutions for Class 7

NCERT Solutions for Class 7 Science Free PDF Download

NCERT Solutions for Class 7 Science

In NCERT Solutions for Class 7 Science, you will learn concepts like Nutrition in Plants, Heat, Acids, Weather, Soil and Climate. Our NCERT Solutions provides you questions and answers which are arranged chapter-wise and help you to get good marks in your exams.

NCERT Solutions for Class 7 are designed by our subject matter experts, who proactively track and work on the latest syllabus.

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NCERT Solutions for Class 7 Science Chapterwise Download

CBSE Class 7 Science Chapter 1 – Nutrition in Plants

CBSE Class 7 Science Chapter 2 – Nutrition in Animals – Signup for this chapter.

CBSE Class 7 Science Chapter 3 – Fibre to Fabric – Signup for this chapter.

CBSE Class 7 Science Chapter 4 – Heat – Signup for this chapter.

CBSE Class 7 Science Chapter 5 – Acids, Bases, and Salts

CBSE Class 7 Science Chapter 6 – Physical and Chemical Changes

CBSE Class 7 Science Chapter 7 – Weather, Climate and Adaptations of Animals to Climate

CBSE Class 7 Science Chapter 8 – Winds, storms, and cyclones

CBSE Class 7 Science Chapter 9 – Soil – Signup for this chapter.

CBSE Class 7 Science Chapter 10 – Respiration in Organisms

CBSE Class 7 Science Chapter 11 – Transportation in Animals and Plants

CBSE Class 7 Science Chapter 12 – Reproduction in Plants

CBSE Class 7 Science Chapter 13 – Motion and Time

CBSE Class 7 Science Chapter 14 – Electric Current and Its Effects

CBSE Class 7 Science Chapter 15 – Light

CBSE Class 7 Science Chapter 16 – Water: A Precious Resource

CBSE Class 7 Science Chapter 17 – Forests: Our Lifeline

CBSE Class 7 Science Chapter 18 – Wastewater Story

NCERT Solutions for Class 7 Science

CBSE Class 7 Science Chapterwise NCERT Solutions

NCERT Solutions for Class 7 Science Chapter 1 – Nutrition in Plants

This chapter explains the mode of nutrition in plants and explanation of different methods and various ways by which plants get their food and the biochemical process of photosynthesis that forms the basis of life.

NCERT Solutions for Class 7 Science Chapter 2 – Nutrition in Animals

This chapter explains about the nutrition in animals from plants and eating those animals which feed on plants for their nutrition, all the organisms including human beings require food for their growth, repairing and smooth functioning of the body.

NCERT Solutions for Class 7 Science Chapter 3 – Fibre to Fabric

In this chapter you will study about different types of fibers like silk and wool, and procedures involved in obtaining these fibers from raw material i.e. shearing, sorting, scouring, cleaning, dyeing and rolling.

NCERT Solutions for Class 7 Science Chapter 4 – Heat

In this chapter you will learn about the basic nature of heat, transfer of heat, measuring temperature, laboratory thermometer, convection, radiation, types of clothes according to season.

NCERT Solutions for Class 7 Science Chapter 5 – Acids, Bases, and Salts

This chapter explains about different types of acids,  bases, salts, identification of substances as acidic or basic and types of indicators, similarities between substances.

NCERT Solutions for Class 7 Science Chapter 6 – Physical and Chemical Changes

This chapter explains the types of changes i.e. physical and chemical change, different types of change, the composition of matter.

NCERT Solutions for Class 7 Science Chapter 7 – Weather, Climate and Adaptations of Animals to Climate

This chapter deals with the weather and climate, adaptation of different forms of life and their habitat, various climatic conditions.

NCERT Solutions for Class 7 Science Chapter 8 – Winds, storms, and cyclones

This chapter explains about natural calamities, their effects, formation.

NCERT Solutions for Class 7 Science  Chapter 9 – Soil

In this chapter, you will learn about soil, nature of the soil, its types and properties.

NCERT Solutions for Class 7 Science  Chapter 10 – Respiration in Organisms

This chapter explanation of the process of respiration and breathing, breathing in other animals, underwater, respiration in plants.

NCERT Solutions for Class 7 Science Chapter 11 – Transportation in Animals and Plants

In this chapter you will learn about the process of transportation in plants and animals, the circulatory system in human beings in detail.

NCERT Solutions for Class 7 Science Chapter 12 – Reproduction in Plants

In this chapter, you will learn about various kinds of reproduction in plants, modes of reproduction.

NCERT Solutions for Class 7 Science Chapter 13 – Motion and Time

In this chapter, you will learn about types of motion, measurement of time, speed, Distance-Time Graph.

NCERT Solutions for Class 7 Science Chapter 14 – Electric Current and Its Effects

In this chapter, you will learn about the basic of electric circuits, heating and magnetic effects of electric current and its applications, symbols of electric components.

NCERT Solutions for Class 7 Science Chapter 15 – Light

This chapter explains formation, nature and different phenomena of light, the path of light.

NCERT Solutions for Class 7 Science Chapter 16 – Water: A Precious Resource

This chapter tells you about the availability of water, different forms of water and its sources, depletion of the water table, water management, distribution of water, water scarcity.

NCERT Solutions for Class 7 Science Chapter 17 – Forests: Our Lifeline

This chapter explains the condition of forests, their importance, and effects of their depletion on the environment and mankind, different types of flora and fauna, maintaining the balance of nature

NCERT Solutions for Class 7 Science Chapter 18 – Wastewater Story

This chapter explains about the importance of clean water available for consumption, sewage and its composition, process of purification of water.

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Solved Questions For You:

Question 1. Why do organisms need to take food?

Answer: 

Food is needed by all organisms for many purposes:
a. The main function of food is to help in growth.
b. Food provides energy for movements such as running, walking or raising our arm.
c. Food is also needed for replacement and repairing damaged parts of the body.
d. Food gives us resistance to fight against diseases and protects us from infections.

Question 2. How would you test the presence of starch in leaves?

Answer:

The presence of starch in leaves can be tested by the Iodine test. When we remove chlorophyll from the leaf by boiling it in alcohol and then put two drops of iodine solution, it is a colour change to blue indicates the presence of starch.

Question 3. Give a brief description of the process of synthesis of food in green plants.

Answer: 

  • Photosynthesis is defined as the process in which the chlorophyll-containing plant cells synthesize food in the form of carbohydrates, using carbon dioxide and water in the presence of solar energy.
  • Sources of raw materials required for photosynthesis:
  • a)Water is taken in, from the roots of the plants and is transported to leaves.
  • b)Carbon dioxide from the air enters the leaves through the pores called stomata and diffuses to the cells containing chlorophyll.
  • c)Solar energy is used to break water into hydrogen and oxygen. This hydrogen is combined with carbon dioxide to form food for the plants, which is ultimately used by the animals as well.
  • This photosynthesis can be represented by the following equation.
  • .

This reaction takes place in chlorophyll in the presence of sunlight.

Question 4. A plant that has both autotrophic and heterotrophic mode of nutrition.
Answer:
Pitcher plant has both autotrophic and heterotrophic mode of nutrition. Autotrophic because it is a green plant and has chlorophyll in it, but because of its nitrogen-deficient soil it absorbs nitrogen from insects which makes it heterotrophic.

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