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Holy Cross School, Malleshpalya | New Thippasandra, Since 1982, , Class, Subject, Marks, , 7th Std., Science, 25, , I. FILL IN THE BLANKS:, 1. The combination of 2 or more cells are called a ------------., 2. The fusion of male and female gametes is termed as ………..., 3. Kidneys eliminate the waste materials in the liquid form called ……….., 4. Hemoglobin is present in ……….. cells., , 4, , II. CHOOSER THE CORRECT ANSWER:, 1. In plants water is transported through, 2. Mature ovary forms the, 3. The basic unit of speed is, 4. In cockroaches, air enters the body through, , 4, a) Xylem, a) pistil, a) m/min, a)lungs, , b) root hair, b) seed, b) km/min, b) gills, , c) stomata, c) fruit, c) m/s, c) spiracles, , III. WRITE THE NAME OF THE MOTION:, 1. Motion of a child in a merry - go- round: ___________, 2. Motion of a train on a straight bridge: ___________, 3. Motion of your hands while running: ___________, , 3, , IV. MATCH THE FOLLOWING:, 1. Stomata, absorption of water., 2. Xylem, transpiration, 3. Root hairs, transport of food, 4. Phloem, transport of water, synthesis of carbohydrates, , 2, , V. ANSWER THE FOLLOWING:, 12, 1. What is stomata? Give 2 functions of stomata., 2. Why do we often sneeze when we inhale a lot of dust – laden air?, 3. State the main differences between asexual and sexual reproduction., 4. A simple pendulum takes 32 seconds to complete 20 oscillations. What is the time period of the pendulum?, 5. Do you think an electromagnet can be used for separating plastic bags from a garbage heap? Explain., 6. What are the components of blood?