Tag Archives: NCERT Books Online Solutions

Question: What do you understand by pollution? Answer: Harmful change mode in the environment due to human activities is called pollution. Question: Name the four kinds of pollution? Answer: The four kinds of pollution are: Air pollution Water pollution Land pollution Noise pollution Question: How does air pollution harm us? Answer: …

Question: Define Habitat and Adaptation. Answer: Habitat: The area where a particular animal naturally lives is called habitat. Adaptation: The changes in the feature or behavior of an organism that help it to survive in its habitat is called adaptation. Question: What does a habitat provide to an animal? Answer: …

Question: How does a frog catch its prey? Answer: The frog uses its long sticky tongue to catch insects. Frogs have well-developed digestive system in which food is digested with the help of digestive juices. Question: How does a spider digests its food? Answer: A spider weaves a sticky web in which …

Question: What is nutrition? Answer: The process of taking in food by an organism and its utilization by the body is called nutrition. There are two types of nutrition: The mode of  nutrition in which organisms make food  themselves from simple substances is called autotrophic nutrition. For example plants. The mode of nutrition in …

Question: List three examples of reproduction in plants through underground roots. Answer: Some plants have underground stems that are swollen to store food and have buds which can grow into new plants. Some examples are: Tubers, bulbs, Rhizome and corm Tubers- For example: Potatoes Bulbs- For example: Onion, garlic, lily, tulip, …

Question: Define germination. Answer: The process by which a seed forms into a new plant is called germination. Question: Name any three things that a seed requires to germinate. Answer: The three things that a seed requires to germinate are –  Air  Water Warmth. Question: Why do plants scatter their …