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Observe the table given below and answer the questions.Name of the animalWeight of the  bodyWeight of the heartHeart beat per minuteBlue whale 1,50,000 kgs750 kgs7Elephant 3,000 kgs12-21 kgs 46Man60 – 70 kgs 300 grams76Koaltit 8 grams 0.15 grams1200Why is heart beat less in animals with more weight ?

Answer»

In order to supply blood to far end of the body parts heart exerts more pressure. The time taken for circulation of blood from heart to body parts and body parts is more. Hence heart beat less in the animals with more weight.



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