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Aifiliation No: 330548 School Code: 65544, , ¥ B.D.S PUBLIC SCHOOL, Madarpur, Basantpur, Siwan, Affiliated to CBSE [10+2], New Delhi, , , , , , , , , , , , , , e |, — Periodic Test- III (2021-22), Class: Vil Sec... Subject: Science Marks:-20 ‘Time: 1 Hrs |, Name Reg No. _ Roll No, 1. Choose the correct option. (Ix5= 5 Marks), a) The reproductive part of a plant is the |, i, Leaf ii, Stem iii, Rootiv. Flower iv. Flower |, / b) A bus travels 54 km in 90min. The speed of the bus is, 1.0.6 m/s ii, 10 m/s iii.5.4 m/s iv. 3.6 m/s, c) A wire in an electric circuit, i, Supplies electric current ii, Allow current to flow, iii, Make the bulb fused iv. Resist current flow, d) Aquatic animals excrete, i, ammonia ii, Urea iii, Uric acid iv. Sweat, ! e) Bryophyllum can reproduce by its, i, Stem ii. leaves iii, roots iv. flower, | .2, Fill in the blanks (1x5 = 5 Marks), ! a) A flower has both the male and the female reproductive parts, b) Longer line in the symbol for a cell represents its terminal, , ©) The left and right sides of the heart are separated by, d) The distance covered by an object in unit time is called its, , e) The fusion of male and female gametes is termed as, , 3. Answer the following questions (6x1=5 Marks), , a) Give two advantages of vegetative propogation by cutting,, , b) Draw distance - time graph for, , i. a bus moving with constant speed, , ii, a truck moving, with a non-uniform speed., , ©) Why MCBs are preferred to fuse?, d) Why are compact fluorescent lamps (CFLs) preferred ric bulb? 7, e) Salman takes 15 minutes from her house to reac, , ‘bicycle has a speed of 2m, l