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Shell of diatoms is made up of
(a)Silica
(b)Calcium carbonate
(c)Keratin
(d)Calcium oxalate

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Important Questions on Biological Classification
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Diatomite is obtained from

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Most characteristic feature of diatoms is

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Taxonomically the most controversial group is

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Decomposer protists are

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The dead remains of diatoms are known as :-

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Taxonomists feel difficulty in classification of :-

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Which of the following unicellular algae reproduce by auxospores, have silicified cell wall and store food in the form of fats, leucosine and chrysolaminarin?

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Paramylum is stored food of:
