EFFECT OF WATER SCARCITY OF PLANTS You must have seen potted plants wilting and ultimately drying up if they did not get water even for a few days. You have already learnt in Chapter 1 that pl
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You might have seen a beam of sunlight when it enters a room through a narrow opening or a hole.You may have also seen beams of light from the headlamps of scooters, cars and engines of trains [Fig. 1
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