Why Centrioles Absent In Plant Cells?

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Solution

Plant cells have centrosomes instead of centriole and play the similar roles in cell division as what centrioles play in cell division of animal cells. But centrosomes have relatively simpler organisation than centriole in animal cells.

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As spindle fibres are formed by centrioles during mitosis. But they are absent in plant cells. So who forms spindle fibres in plants in order to carry out mitosis.

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Nerve cells do not divide as they do not contain centrioles so why does plant cells divides (even they do not contain centrioles)?

Q. In which of the following cell, centriole is absent?

Q. Sir
How does mitosis occur in plants without centrioles and centrosomes. We are taught that spindle fibres are formed by centrioles moving to opposite poles of the cell and plant cells don't posses centrioles. Then how is the spindle apparatus is formed and constricted to divide the chromatids.

Consider the following statements.

(A) Plant cells have centrioles which are absent in almost all animal cells.

(B) Ribosomes are the site of protein synthesis.

(D) In an animal cell, steroidal hormones are synthesized by smooth endoplasmic reticulum.

Of the above statements

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