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Anatomy of leaf
Concepts tested here
- Isobilateral leaf
All Questions
2009 AIPMT 1 question
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Palisade parenchyma is absent in leaves ofIn dorsiventral (dicot) leaves the mesophyll is differentiated into palisade parenchyma towards the upper surface and spongy parenchyma towards the lower surface.
Gram, mustard and soybean are dicots and have this differentiation.
In isobilateral (monocot) leaves, such as those of grasses, the mesophyll is not differentiated into palisade and spongy parenchyma.
Sorghum is a monocot (a grass), so its leaves lack palisade parenchyma.
Hence palisade parenchyma is absent in the leaves of sorghum.