2016 · Q23
Which of the following cells do not contain nucleus?
- 1Root hair cells
- 2Red blood cells
- 3Platelets
- 4Monocytes
Select the correct answer using the code given below.
General KnowledgeBiology
- A1 only
- B2 and 3 only
- C1, 2 and 4
- D2, 3 and 4
Explanation
Mature mammalian red blood cells expel their nucleus during development, and platelets are anucleate cytoplasmic fragments shed by megakaryocytes — so 2 and 3 lack nuclei. Root hair cells are ordinary plant cells with nuclei, and monocytes are nucleated white blood cells. Hence only 2 and 3.