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Cell Structure in Prokaryotic and Eukaryotic Cells

In plant cell...

Question

In plant cell mitotic spindle fibers are extended by polar caps or MTOC ? also the function of the formation and organisation of cilia and flagella ( function of centrosome in plants ) is done by polar caps or MTOC ?

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Solution

Polar caps work as MTOC in forming the spindle fibers. Cilia and flagella usually are present in lower plants and they have centrioles for that.

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Q. Centrosome includes a pair of centrioles that help in cell division by spindle formation. The non-dividing cells in human are

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.

Q. Which of following mineral element is needed during the formation of mitotic spindle, accumulates in older leaves and is involved in normal functioning of cell membrane?

Q. Match the following essential elements and their functions in plants.

(a)	Zn	(i)	Required for formation of mitotic spindle
(b)	Ca	(ii)	Constituent of biotin
(c)	S	(iii)	Constituent of nucleic acid
(d)	N	(iv)	Required for synthesis of auxin

Select the correct option.

Polar ice caps are found in ___.

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Cell Structure in Prokaryotic and Eukaryotic Cells

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