Question

Analyse the table given below.

Name of the animal Weight of the body Weight of the heart No. of beats./min.

Blue whale 1,50,000 kg 750 kg 7

Elephant 3000 kg 12 – 21 kg 46

Man 60 – 70 kg 300 gm 76

Coal (Bird) 8 gm 0.15 gm 1200

Now, answer these questions.

1. What is the relationship between weight of heart and weight of the body?

2. What is the relationship between weight of heart and its number of heart beats?

3. Why rate of heart beat is more in animal with less weight?

4. From the above table which animal has the highest heartbeat rate per minute?

5. What do we conclude from the above data?​

Answer 1

Answer:

1.If the weight of the animal is more ,then the weight of its heart is also more.

2. The more the weight of the animal,the less the number of heart beat per minute

Explanation:

3. The time taken for circulation of blood from heart to body parts and body parts to heart is less. Therefore the rate heart beat is more in the animals with less weight.

4.Coalit bird has the highest heartbeat rate per minute.

5.I concluded that,

Smaller animals have more heart beat

per minute than larger animal.

The mass of heart is proportional to the Body mass.

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