Question
Differentiate between 'outer space' and 'inner space'.

Answer

S.No.
Outer Space
Inner Space
(i)
Outer space refers to the apoplast, i.e., non-living components.
Inner space refers to the symplast, i.e., living components like membranes and cytoplasm.
(ii)
Uptake of ions into the - 'outer space' is passive.
Uptake of ions into the inner space' is active.

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