Which of the following is correct about the major role of the circulatory system? [1 mark]

A. To break down food so that it can be used by the body.
B. To provide a medium for transportation, elimination of waste and maintain homeostasis.
C. To give the body shape and support.
D. To help in the absorption of the digested food.

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Solution

Ans. B. To provide a medium for transportation, elimination of waste and maintain homeostasis. [1 mark]

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Q. Digestion needs the help of two more systems in the body to provide energy from food. Which are these systems and how do they help?

Question 18
Following statements describe the five steps in animal nutrition. Read each statement and give one word for each statement. Write the terms that describes each process.

(a) Transportation of absorbed food to different parts of body and their utilisation.

(b) Breaking of complex food substances into simpler and soluble substances.

(d) Taking food into the body.

(e) Transport of digested and soluble food from the intestine to blood vessels.

Statement 1: The body breaks down complex substances in food into smaller components in the digestive system.

Statement 2: Breaking down of food into simpler substances helps in easy and efficient absorption of nutrients.

Which of the following options describes the correct relationship between the two statements?

Q. Assertion (A): The body breaks down complex substances in food into smaller components in the digestive system.

Reason (R): Breaking down of food into simpler substances helps in easy and efficient absorption of nutrients.

Breathing is a process that

(i) provides O₂ to the body.

(ii) breaks down food to release energy.

(iii) helps the body to get rid of CO₂.

(iv) produces water in the cells.

Which of the following gives the correct combination of functions of breathing?

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