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Describe the Internal Structure of a Dorsiventral Leaf with the Help of Labelled Diagrams - CBSE (Science) Class 11 - Biology

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Question

Describe the internal structure of a dorsiventral leaf with the help of labelled diagrams.

Solution

Dorsiventral leaves are found in dicots. The vertical section of a dorsiventral leaf contains three distinct parts.

Epidermis : Epidermis is present on both the upper surface (adaxial epidermis) and the lower surface (abaxial epidermis). The epidermis on the outside is covered with a thick cuticle. Abaxial epidermis bears more stomata than the adaxial epidermis.

Mesophyll: Mesophyll is a tissue of the leaf present between the adaxial and abaxial epidermises. It is differentiated into the palisade parenchyma (composed of tall, compactly-placed cells) and the spongy parenchyma (comprising oval or round, loosely-arranged cells with inter cellular spaces). Mesophyll contains the chloroplasts which perform the function of photosynthesis.

Vascular system: The vascular bundles present in leaves are conjoint and closed. They are surrounded by thick layers of bundle-sheath cells.

T.S. of Dicot leaf 

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APPEARS IN

 NCERT Solution for Biology Textbook for Class 11 (2018 to Current)
Chapter 6: Anatomy of Flowering Plants
Q: 12 | Page no. 99
Solution Describe the Internal Structure of a Dorsiventral Leaf with the Help of Labelled Diagrams Concept: Anatomy of Dicotyledonous and Monocotyledonous Plants - Dorsiventral (Dicotyledonous) Leaf.
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