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The figure given below shows the structure of a chloroplast with its four parts labelled as A, B, C and D.

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Select the part that is incorrectly matched with its function.

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Important Questions on Cell: The Unit of Life

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In 70S and 80S ribosomes, ‘S’ as a unit that stands for which of the following?
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How many of the following features are true for centriole?

(i) A non-membrane-bound cell organelle that helps in cell division.

(ii) Its core is called an axoneme.

(iii) Has nine microtubule doublets at the periphery.

(iv) Has a cartwheel organisation. 

(v) Shows (9 + 0) organisation of microtubules.

(vi) Surrounded by a microtubule generator.

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The cytoskeleton is a proteinaceous network of fibres in the cytoplasm involved in which of the following?
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The organelles with an internal cross-section showing the characteristic (9 + 2) morphology are