Q154 / 200 · NEET 2012 (Screening) · Zoology

Compared to those of humans, the erythrocytes in frog are

  • A
    without nucleus but with haemoglobin
  • Correct answer
    B
    nucleated and with haemoglobin
  • C
    very much smaller and fewer
  • D
    nucleated and without haemoglobin

Solution

Mature human erythrocytes (RBCs) are enucleated (lack a nucleus) to provide maximum space for haemoglobin, which is responsible for oxygen transport.

Frog erythrocytes are large, oval, biconvex, and possess a distinct nucleus.

Both human and frog erythrocytes contain the respiratory pigment haemoglobin.

Therefore, compared to human erythrocytes, frog erythrocytes are nucleated and contain haemoglobin.

Hence, the correct answer is option: 'B'.

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