Introduction Chemistry deals with the composition, structure, properties and interaction of matter and is of much use to human beings in daily life. Importance of Chemistry Chemistry has a great impact on human life since it has a wide range of applications in different fields. These are mentioned below: (A) In Agriculture and Food: It …
CLASS 11 CHAPTER 1- Some Basic concepts of Chemistry Read More »
Question1. Why do organisms take food? Solution1: Living organisms eat food to get energy, which is essential for performing growth and for the maintenance of their body. Question2. Distinguish between a parasite and a saprotroph. Solution2: Saprotroph Parasite These are the organism that takes nutrients from the dead or decaying organic matter. These are the organism that …
NCERT SOLUTIONS CLASS 7 CHAPTER 1 Nutrition in Plants Read More »
Question 1 Do you find that all living beings need the same kind of food? Solution 1 No, the food requirements of all living organisms are different. On the basis of food requirements, living organisms are categorised into three: Herbivores: Animals that eat only plants and products of plants. For example Buffalo, Cow, Goat, …
NCERT SOLUTIONS CLASS 6 CHAPTER 1 – Food: Where does it come from? Read More »
Elements are classified as Metals and Non-Metals based on their physical and chemical properties. A comparative study of their physical properties is as follows: Chemical Properties of Metals The metal reacts with air or oxygen to form metal oxide. For example, Copper reacts with oxygen to form Copper Oxide. …
Introduction The taste of the food that we eat depends on the presence of acids and bases in them. Acids are sour in taste and change the colour of blue litmus to red. Bases are bitter in taste and change the colour of red litmus to blue. Litmus and turmeric are natural indicators. Some other …
Introduction Everything around us is made of matter. For example, wood, paper etc. All the matter around us is not pure. It can be pure or impure. Elements An element is a substance that cannot be divided further into simpler substances by any chemical methods like applying heat, light or electric energy. For example, Carbon …
Matter-Nature and Behaviour Anything that occupies space and has mass is called Matter. According to early Indian philosophers, every living and non-living thing is made of five basic elements called the panchtatava- Air, water, earth, sky and fire. Therefore, the matter is composed of these five constituents. Properties of Matter The matter is made up …
What are Microorganisms? MICRO-ORGANISMS ↓ ↓ Very small Living plant or animal They are living organisms of very small sizes. They are so small that they …
CLASS 8 – CHAPTER 2 – Micro-organisms: Friends and Foe Read More »
Introduction To provide food for a large population regular crop production, proper management and distribution is required. When the same type of plant is grown in one place on a large scale, it is called a crop. Depending upon the seasons in India, there are two primary types of crops: Kharif Crops: The crops which …
CLASS 8-CHAPTER 1- Crop Production and Management Read More »
Different Ways of Taking Food Nutrition in animals includes nutrients requirements, mode of intake of food and its utilization in the body. Digestion: It is the process by which animals’ break down complex food substances into simpler substances. Different ways of taking food. Digestion in Humans The digestive tract and the associated glands together make …
