NCERT WITH KVS

                                         Land, Soil, Water, Natural Vegetation           and Wildlife Resources Question 1. Answer the following questions. (i) Which are the two main climatic factors responsible for soil formation? (ii) Write any two reasons for land degradation today. (iii) Why is land considered an important resource? (iv) Name any two steps that the government has taken to conserve plants and animals. (v) Suggest three ways to conserve water. Answer. (i) Temperature and rainfall are two main climatic factors responsible for soil formation. Rainfall contributes in breaking the rocks by applying pressure. Temperature fluctuations between hot and cold also form cracks in the rocks. (ii) Reasons for land degradation are: Ever-growing demand of the growing population Destruction of forest 'cover (iii) Land is an important resource because it provides surface for agriculture, living, forestry, industries, construction, etc. Most activities take place on land. (iv) Ste

                                     Microorganisms Friend and Foe Question 1. Fill in the blanks. (a) Microorganisms can be seen with the help of a _____ (b) Blue-green algae fix ______ directly from the air to enhance the fertility of soil. (c) Alcohol is produced with the help of _____ (d) Cholera is caused by ______ Ans: (a) microscope (b) nitrogen (c) yeast (d) bacteria Question 2. Tick the correct answer. (a) Yeast is used in the production of (i) sugar (ii) alcohol (iii) hydrochloric acid (iv) oxygen Ans: (ii) alcohol b) The following is an antibiotic: (i) sodium bicarbonate (ii) streptomycin (iii) alcohol (iv) yeast Ans: (ii) streptomycin (c) Carrier of malaria-causing protozoan is: (i) female Anopheles mosquito (ii) cockroach (iii) housefly (iv) butterfly Ans: (i) female Anopheles mosquito d) The most common carrier of communicable diseases is (i) ant (ii) housefly (iii) dragonfly (iv) spider Ans: (ii) housefly (e) The bread or idli dough rises because of: (i) heat (ii) grindi

                                  Questions: Ignesious lost his wife, two children, his father-in-law, and his brother-in-law in the tsunami. Sanjeev made it to safety after the tsunami. Meghna was saved by a relief helicopter. Almas’s father realised that a tsunami was going to hit the island. Her mother and aunts were washed away with the tree that they were holding on to. Answers: True False False True True Answer the following in a phrase or sentence. Questions: Why did Tilly’s family come to Thailand? What were the warning signs that both Tilly and her mother saw? Do you think Tilly’s mother was alarmed by them? Where had Tilly seen the sea behaving in the same strange fashion? Where did the Smith family and the others on the beach go to escape; from the tsunami? How do you think her geography teacher felt when he heard about what Tilly had done in Phuket? Answers: Tilly’s family had come to Thailand to celebrate Christmas. Both saw the sea rise and it started to foam and form whi

                                                      Resources Question 1. Answer the following questions. (i) Why are resources distributed unequally over the earth?      ANS (i) Resources are distributed unequally over the earth because of the different natural conditions, and physical factors like terrain, climate and altitude. (ii) What is resource development?                                             ANS. (ii) Resource development is the method of utilizing our intelligence in order to improve the quality, usability and utility of a resource. (iii) Why are human resources important? ANS.(iii) Human resources are important because the development of other resources solely depends upon this resource as humans have knowledge, skill, and technology to develop other resources. (iv) What is sustainable development? ANS. We should use resources in such a balanced way that we satisfy our needs as well as conserve them for the future. This concept is called sustainable development. Qu