L.O. Differentiates materials and organisms on the basis of their properties, structure and functions. Q-1 Identify the type of artificial fibres based on the properties given below. (5) (1) Strong, elastic, light as well as lustrous and easily washable fabric can be made using these fibres. (2) These fibres are obtained by chemical treatment of wood pulp. (3) The fabric made from these fibres is comfortable to wear, does not get wrinkled easily and easy to wash. (4) Different colours of sweater, shawls, and blankets made from these fibres are used in winter as they are durable and affordable. (5) Different kinds of plastic bottles, utensils, films, wires are made from these fibres. L.O. Classifies materials and organisms based on properties / characteristics. Q.2 (A) State which of the following is Rabi or Kharif crop based on the given characteristics. (2) (1) The crops sown in rainy season. (2) The crops sown in winter season. (B) Classify into thermosetting plastic and thermoplastics on the basis of their characteristics. (3) (1) The plastics that are poor conductors of heat and electricity. (2) Plastics which when moulded once, cannot be softened by heating. (3) The plastic which gets deformed easily on heating and can be bent easily. L.O. Relates processes and phenomenon with causes. Q. 3 Give scientific reason. (1) Modern methods of irrigation help us to use water economically. Why? (2) Vaccination is insisted in present covid-19 situation. Why? (3) (2) L.O. Applies learning of scientific concepts in day-to-day life. Q. 4 Answer the following questions. (1) How will you prepare the soil before growing the crop in the field? (2) (2) In which condition will you use agricultural implements such as Plough, Hoe and Cultivator? (3) L.O. Makes efforts to protect environment. Q. 5 Answer the following questions. (1) How can we protect the environment by using manure? (3) (2) What efforts will you make in day-to-day life to reduce the use of plastics.
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Animals such as sponges and Hydra do not posses any circulatory system. The water in which they live brings food andoxygen as it enters their bodies. The water carries away waste materials and carbon dioxide as it moves out. Carbon dioxideis removed as waste from the body through the during exhalation.
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I don't more know about science so sorry all.of you guys once again sorry
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