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Leaves Claudio Divizia Shutterstock.jpg.653x0_q80_crop-smart (Morphology…

- - - - palisade parenchyma- a layer of cells at the upper surface of most leaves
      - lower portion of leaves is spongy and aerenchyma permits CO2 to diffuse rapidly into interior part of leaf
      - ground tissue interior to epidermis
    - - edict leaf usually have one large midrib called mid vein from which lateral veins emerge into narrow vein
      - bundle sheath extension to Xylem and Phloem
      - between the palisade and spongy mesophyll is vascular tissue
      - minor veins consists of few xylem and rest of them are phloem
    - - leaf loss water through epidermis called transpiration
      - leaf stomata often sunken into epidermal cavities
      - leaf epidermis are of hairy& trichomes. they help to deflect excessive sunlight & provide shade to the leaf
    - - leaf traces- 3 or more vascular bundles
      - stipules- two small flaps at base the petiole tissue which protect the shoot apical meristem and contribute in photosynthesis
      - part of leaf, transition between the stem and lamina