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Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBody Fluids and Circulation1 Mark
MCQ
A matured mammalian RBC is unusual because:
  • A
    It exhibits diapedesis.
  • B
    It is colourless.
  • C
    It has no nucleus.
  • D
    It can change its shape.
✓

Answer

  1. It has no nucleus.

Explanation:

Mammalian erythrocytes are unique among the vertebrates as they are non-nucleated cells in their mature form. These cells have nuclei during early phases of erythropoiesis, but extrude them during development, as they mature in order to provide more space for haemoglobin.

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