Question

Cell wall is present in plant cells outside the plasma membrane. It is absent in animal cells, where outermost

covering is plasma membrane.

Give your views about :

I) plastids in plant cell and animal cell.

II) centrioles in plant cell and animal cell.

III) Electron microscopic structure of plant cell and animal cell (by well labelled diagram only). ​

Answer 1

3)

1) Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

2)Centrioles are found as single structures in cilia and flagella in animal cells and some lower plant cells. Centrioles are constructed of microtubules. ... Centrioles are absent from the cells of higher plants but normal mitosis takes place and with satisfactory results.

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