Difference between monocotyledons leaf and dicotyledons …

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Difference between monocotyledons leaf and dicotyledons leaf.

Posted by Arav Ashok 7 years, 2 months ago

CBSE > Class 11 > Biology

1 answers

Meghna Thapar 5 years, 4 months ago

The main characteristic feature that differentiates a monocot and a dicot leaf is that, the guard cells of stomata are kidney-shaped in dicot leaf and dumb-bell shaped in a monocot leaf. ... The vascular bundle is large in dicot leaf whereas in monocot leaf, both small and large vascular bundles are present.

<center>Difference Between Dicot Leaf and Monocot Leaf</center>
<center>Dicot Leaves</center>	<center>Monocot Leaves</center>
<center>Shape</center>
Dicot plants have leaves that are relatively smaller and broader than monocot plants	Monocot plants have leaves that are characteristically longer and slender
<center>Stomata</center>
Stomata in dicot leaves are kidney-shaped	Stomata in monocot leaves are dumb-bell shaped
<center>Arrangement of Stomata</center>
Dicot leaves are hypostomatic – which means stomata are present on the lower surface of the leaf	Monocot leaves are amphistomatic – which means the stomata are present on lower as well as the upper surface
<center>Nature of Orientation</center>
Dorsoventral orientation	Isobilateral orientation
<center>Leaf Surface Characteristics</center>
Dicots leaves have a dark green upper surface and a light green lower surface	No such differentiation. Both sides have the same colour.
<center>Size of Vascular Bundles</center>
Large	Small as well as large vascular bundles are present
<center>Intercellular Space</center>
Due to the presence of mesophyll cells, dicot leaves have large intercellular spaces	Monocot leaves have comparatively tighter intracellular space due to the compact arrangement of mesophyll cells
<center>Differentiation of Mesophyll</center>
Differentiated into two parts – upper palisade and lower spongy mesophyll	No such differentiation in a monocot leaf
<center>Venation Pattern</center>
Reticulate venation (web-like pattern)	Parallel venation (Veins do not join other veins)
<center>Characteristic of the Hypodermis of the Midrib</center>
Collenchymatous	Sclerenchymatous
<center>Bundle Sheath Extension</center>
Parenchymatous	Sclerenchymatous