NEET BIOLOGY

Detailed explanation-1: -Centrioles are paired barrel-shaped organelles located in the cytoplasm of animal cells near the nuclear envelope . Centrioles play a role in organizing microtubules that serve as the cell’s skeletal system. They help determine the locations of the nucleus and other organelles within the cell.

Detailed explanation-2: -At the beginning of nuclear division, two wheel-shaped protein structures called centrioles position themselves at opposite ends of the cell forming cell poles. Long protein fibers called microtubules extend from the centrioles in all possible directions, forming what is called a spindle.

Detailed explanation-3: –centrioles organize to form spindle fibres.

Detailed explanation-4: -As spindle fibres are formed by centrioles during mitosis.

Detailed explanation-5: -Which is the structure in plant cells that helps in the formation of spindle fibres? Centrosome.