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Questions  

Read the following statements and identify the organism we are referring to:

(a) Cell walls form two thin overlapping shells.

(b) The walls are embedded with silica and thus the walls are indestructible.

(c) Chief ‘producers’ in the oceans

a
Diatoms
b
Dinoflagellates
c
Euglenoids
d
Slime moulds

detailed solution

Correct option is A

In diatoms the cell walls form two thin overlapping shells, which fit together as in a soap box. The walls are embedded with silica and thus the walls are indestructible. Diatoms are the chief ‘producers’ in the oceans.

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