1.

Give four points of anatomical differences between a monocot stem and a dicot stem.

Answer»
Monocot StemDicot Stem
(i) Epidermal hairs absent.(i) Multicellular epidermal hairs present.
(ii) Ground tissue undifferentiated.(ii) Ground tissue differentiated into cortex, endodermis and pericycle.
(iii) Vascular bundles are scattered in ground tissue.(iii) Vascular bundles are arranged in a ring.
(iv) Vascular bundles are conjoint collateral and closed.(iv) Vascular bundles are conjoint, collateral and open.
(v) Pith absent.(v) Pith present.
(vi) Xylem tracheids and vessels oval in outline.(vi) Tracheids and vessels are polygonal in outline.
(vii) Secondary growth absent.(vii) Secondary growth present.


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