NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION

1 Medium

1 of 1

Understanding +4 | -1

Assertion: RBCs are devoid of nucleus in most of the mammals
Reason: Entire cytoplasm of RBCs is filled with red coloured, iron containing complex protein called haemoglobin.

View answer and explanation

Correct option: A

Both assertion and reason are true and reason is the correct explanation of assertion

Option A (Both assertion and reason are true and reason is the correct explanation of assertion) is correct because the absence of a nucleus in RBCs allows more space for hemoglobin, which is essential for oxygen transport.

More Questions from BODY FLUIDS AND CIRCULATION

Practice All Chapter MCQs →

In ABO blood grouping, person with blood group

{O^ - }

can accept blood from On a beautiful sunny day, a man went for jogging and climbed few stairs in the park. His heart starts beating 95 times per minute. In left ventricle, the volume of blood at the end of ventricular systole is

60 \,\mathrm{~mL}

whereas the volume of blood at the end of ventricular diastole was

140 \,\mathrm{~mL}

. What is the cardiac output in this person? Which area allows the atria to completely empty as the ventricles fill with blood? Serum is Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups The action potential is conducted to the ventricles by AVN. Damage to AVN results in