Question

All of the following are parts of plant cells EXCEPT

• A. centrioles
• B. mitochondria.
• C. chloroplasts.
• D. cell wall

Answer 1

The correct option is A centrioles

centrioles are absent in plant cells. Plant cells which do not possess centrioles, during cytokinesis produce numerous membranous vesicles derived from Golgi complex and endoplasmic reticulum (SER). These vesicles appear at the inter-zonal region of the equatorial plate as well as at the microtubules found at this region. With time lapse, some more microtubules are added to the peripheral mitotic spindle. Thus the mitotic apparatus appears to be bulged. Such a bulged structure of mitotic apparatus is called phragmoplast.