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Questions  >>  CBSE XII  >>  Biology
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Given figure represents different ones of a lake or a pondIdentify the labelled parts X,Y and Z and select the correct statement

$\begin{array}{1 1} \text{a. X constitutes the shallow water tanks and is called littoral zone} \\ \text{b. Y constitutes the open water zone upto which light can penetrate and is called profundal zone} \\ \text{c. Z constitutes the deep water zone where light cannot penetrate and is called limnetic zone} \\ \text{d. All of these} \end{array} $

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