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Question

Which of the following are not present in the plant cells ?
Chloroplast, Vacuoles, Mitochondria, Centrosome, Nucleus, Cell wall.


Solution

Plant cells do not contain centrosomes, they are only found in animal cells. Their main function is to form microtubules which attach to chromosomes for their equal distributions during cell division. While other organelles are found in plant cells with their specific functions:
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Chloroplast performs photosynthesis.
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Vacuoles store  food, nutrients as well as waste. They are of large and centrally placed in a plant cell and occupy about 70% to 80% of the cell volume.
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Mitochondria generates energy for the cell by producing ATP.
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Nucleus contains the genetic material and assists protein synthesis.
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Cell wall provides mechanical strength to the plant cell.

Botany

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