Monocotyledonous Leaf – Class 11 | Chapter – 6 | Short Notes Series PDF

Monocotyledonous Leaf: These leaves orient themselves parallel to the major axis and parallel to the direction of sunlight. Most monocots possess parallel-veined Monocotyledonous leaves, including grasses and grasslike plants, lilies, irises, amaryllises, etc.

  • Monocotyledonous leaf is differentiated into upper as well as lower epidermis, and mesophyll, which occurs in between the two epidermises.
  • The stomata in type of leaves are distributed on both the epidermises.
  • The mesophyll cells consist of one type of cells, i.e. the cells are either more or less isodiametric that means simulate spongy parenchyma or elongated that means simulate palisade parenchyma. The cells lie in between the upper and lower epidermis having a little intercellular space.
  • In the transverse section of the Monocotyledonous leaf there is vascular bundles are more or less of same sizes as well as they are arranged in a transverse line.
  • The vascular bundles in the leaf are usually surrounded by the bundle sheath, which may be found in one or two layers. In the latter case the outer sheath is made of thin walled parenchyma cells. The cells of the inner sheath are smaller in cross-sectional diameter as well as thick walled in comparison to the outer sheath.
  • Bulliform cells are present.
  • Examples of the Monocotyledonous leaf are- monocots such as maize, lilies, irises, amaryllises etc.

Anatomy of Monocotyledonous Leaf

Isobilateral Leaf

The leaf is the fundamental part of the various pieces of a plant. Leaves carry out two exceptionally fundamental roles, i.e., photosynthesis and happening. Leaf life structures assist us with understanding the tissues and sorts of cells engaged with these cycles and how they work together to perform them effectively. Leaf life structures are read up for significantly two unique kinds of leaves in angiosperms.

The dorsiventral leaf and the Monocotyledonous leaf. These two leaves feature the assortment in course of action of tissues and alteration as per the capacities. Dorsiventral leaves show a level arrangement, with all-around separated upper and lower surfaces. The upper surface of the leaf is known as the adaxial or ventral surface. The lower surface of the leaf is known as the abaxial or dorsal surface.

An upward cross-part of the leaf displays epidermis (upper and lower), mesophyll, and vascular groups. Monocotyledonous leaves or monocot leaves are not separated into two particular surfaces. The two surfaces are similarly enlightened by the sun. The leaves show equal venation. The leaf base in many monocots frames a sheath-like construction that covers the stem. The interior association doesn’t show a lot of separation from the dicot leaf.

 

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By Team Learning Mantras