1. (a) Arteries possess thick elastic wall without valves inside, blood flows under high pressure and carry blood away from the heart to different parts of the body.

    (a) Arteries possess thick elastic wall without valves inside, blood flows under high pressure and carry blood away from the heart to different parts of the body.

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  2. (i) Right auricle receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of body.

    (i) Right auricle receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of body.

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  3. (d) It is similar to blood plasma, red coloured and has more protein

    (d) It is similar to blood plasma, red coloured and has more protein

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