V.S. of a dorsiventral (dicot) leafपृष्ठाधारी (द्विबीजपत्री) पत्ती की ऊर्ध्व काट

NCERT Fig 6.5 (a) · interactive diagram

Parts and their functions

• Cuticle (उपत्वचा (क्यूटिकल)) — Waxy layer reducing water loss.
• Upper (adaxial) epidermis (ऊपरी (अभ्यक्ष) बाह्यत्वचा) — Few or no stomata.
• Palisade parenchyma (खंभ मृदूतक) — Elongated cells arranged vertically and parallel, with many chloroplasts (adaxial).
• Spongy parenchyma (स्पंजी मृदूतक) — Oval/round loosely arranged cells with large air spaces, down to the lower epidermis.
• Vascular bundle (vein) (संवहन बंडल (शिरा)) — Xylem (red, upper) and phloem (blue, lower) surrounded by thick-walled bundle sheath cells.
• Lower (abaxial) epidermis (निचली (अपाक्ष) बाह्यत्वचा) — Bears more stomata.
• Stoma (रंध्र) — Opening in the lower epidermis.
• Sub-stomatal air cavity (अधोरंध्री वायु गुहा) — Air space above the stoma.

Original diagram drawn by Simple Learning Hub, based on NCERT Fig 6.5 (a). Report a mistake