A) Permeable to \[{{O}_{2}}\] and \[C{{O}_{2}}\]
B) Permeable to water only
C) Permeable to air only
D) Non-permeable
Correct Answer: A
Solution :
The calcareous shell present around the eggs of birds in porous and allows diffusion of oxygen \[\left( {{O}_{2}} \right)\]and carbon dioxide\[\left( C{{O}_{2}} \right)\].
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