Fill in the blanks.
11) The number of beats per minute is called _______________.
12) The two lower chamber of the heart is called ______________.
13) The scars present on the potato tubers are called _______________.
14) Pollen grains are present in _______________.
15) ________________ is a instrument which used to measure time with the help of sunlight.
16) ________________ is a technique of watering plants by using narrow tubes which supply
water directly at the base of plant.
17) When a current flows through a wire, it behaves like a ________________.
18) The excretory product of human is ________________.
19) Pulmonary artery carries _________________ blood.
20) _________________ percentage of earth's surface is covered with water.
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Fill in the blanks.
11) The number of beats per minute is called heart rate.
12) The two lower chamber of the heart is called atrium and ventricle.
13) The scars present on the potato tubers are called eyes.
14) Pollen grains are present in anther.
15) Sundial is a instrument which used to measure time with the help of sunlight.
16) Drip irrigation is a technique of watering plants by using narrow tubes which supply
water directly at the base of plant.
17) When a current flows through a wire, it behaves like a magnet.
18) The excretory product of human is urea and carbon dioxide.
19) Pulmonary artery carries oxygen-poor blood.
20) 71 percentage of earth's surface is covered with water.
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