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Chapter: 10th Science : Chapter 12 : Anatomy and Plant Physiology

Internal Structure of Monocot or Isobilateral Leaf

The transverse section of a monocot leaf reveals the following structures.

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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10th Science : Chapter 12 : Anatomy and Plant Physiology : Internal Structure of Monocot or Isobilateral Leaf |


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