Internal Structure of
Monocot or Isobilateral Leaf
The transverse section
of a monocot leaf reveals the following structures.
(i) Epidermis: Monocot leaf has upper
and lower epidermis. Epidermis is made up of parenchyma cells. Cuticle
is present on the outer wall stomata are present on both upper and lower
epidermis. Some cells of upper epidermis are large and thin walled they are
known as bulliform cells.
(ii) Mesophyll: It is the ground tissue
that is present between both epidermal layers. Mesophyll is not differentiated
into palisade and spongy parenchyma. The cells are irregularly arranged with
inter-cellular spaces. These cells contain chloroplasts.
(iii) Vascular bundles: Large number of vascular bundles are present, some of which are small and some are large. Each vascular bundle is surrounded by parenchymatous bundle sheath. Vascular bundles are conjoint, collateral and closed. Xylem is present towards upper epidermis and phloem towards lower epidermis.
Differences between of Dicot and Monocot Leaf
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