Question

Centrioles are present in the cytoplasm of the cells of the organism

• A. Animal cell
• B. Plant Cell
• C. Fungi
• D. E. coli

Hint:

Centrioles are classic organelles found in animal cells but absent in higher plant cells, fungal cells, and prokaryotic cells.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Centrioles are cylindrical, membrane-free organelles composed of microtubule triplets.
They form the centrosome, which acts as the primary microtubule-organizing center (MTOC) in eukaryotic cells to coordinate the assembly of mitotic spindles during cell division.

Step 2: Detailed Explanation:
Centrioles are structurally characteristic of eukaryotic animal cells.
They occur in pairs oriented perpendicular to each other and replicate during the S-phase of the cell cycle to assist in spindle organization during mitosis and meiosis.
Higher plants (angiosperms and gymnosperms) do not have centrioles in their cells; instead, they organize spindle fibers during division using alternative, diffuse microtubule-organizing centers.
Most fungi also lack true centrioles, utilizing specialized structures called spindle pole bodies (SPBs) instead.
Prokaryotes like Escherichia coli are unicellular organisms that lack membrane-bound organelles, a true nucleus, and centrioles, dividing instead by binary fission.
Therefore, animal cells are the only cells among the options that contain centrioles in their cytoplasm.

Step 3: Final Answer:
Hence, the correct option is (A).