The correct Answer is:
C
To determine which statements about the heart are true, we will analyze each statement based on our understanding of the heart’s structure and function.

1. Statement (i): “Left atrium receives oxygenated blood from different parts of the body while right atrium receives deoxygenated blood from lungs.”
– Analysis: The left atrium receives oxygenated blood from the lungs via the pulmonary veins, not from different parts of the body. The right atrium does receive deoxygenated blood, but it comes from the body (via the vena cava), not the lungs.
– Conclusion: False

2. Statement (ii): “Left ventricle pumps oxygenated blood to different body parts while right ventricle pumps deoxygenated blood to lungs.”
– Analysis: This statement is correct. The left ventricle pumps oxygenated blood to the body through the aorta, and the right ventricle pumps deoxygenated blood to the lungs through the pulmonary artery.
– Conclusion: True

3. Statement (iii): “Left atrium transfers oxygenated blood to right ventricle which sends it to different body parts.”
– Analysis: This statement is incorrect. The left atrium transfers oxygenated blood to the left ventricle, not the right ventricle. The left and right sides of the heart are separate to prevent mixing of oxygenated and deoxygenated blood.
– Conclusion: False

4. Statement (iv): “Right atrium receives deoxygenated blood from different parts of the body while left ventricle pumps oxygenated blood to different parts of the body.”
– Analysis: This statement is true. The right atrium does receive deoxygenated blood from the body via the vena cava, and the left ventricle pumps oxygenated blood to the body.
– Conclusion: True

Summary of Findings:
– Statement (i): False
– Statement (ii): True
– Statement (iii): False
– Statement (iv): True

Final Answer:
The true statements about the heart are (ii) and (iv).