What is the function of the spongy mesophyll?

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The important functions of the spongy mesophyll are:

  1. The presence of chloroplast in the spongy mesophyll tissue also helps in performing the photosynthesis.
  2. In xerophytic plants these cells stores water and food in the soluble forms.
  3. In Nymphaea plant sclereids which give mechanical support to the spongy tissue and secretory cells are also found in these cells.
  4. In aquatic plants the spongy mesophyll cells have aerenchyma which provides buoyancy to the leaves.