Notes on the Internal structure of monocotyledon stems

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Stems of monocotyledon plants exhibit a number of variations in their anatomy from that of dicotyledon stems. The following distinct differences are marked in monocot stem.

(i) (The hypodermis is sclerenchymatous and sometimes with sclerenchyma patches or embedded vascular bundles in the hypodermis.

(ii) There is no distinction into general cortex, endodermis, and pericycle and stelar region. The whole mass of tissue constitutes the ground tissue.

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(iii) The vascular bundles are scattered and lie more towards periphery than the centre.

(iv) Each vascular bundle is closed i.e. devoid of cambium.

(v) The vascular bundle has either a sclerenchymatous bundle sheath or bundle cap.

(vi) Phloem parenchyma is absent.

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(vii) Pith is absent.

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