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Lower surface of a dorsiventral (often …

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Lower surface of a dorsiventral (often dicotyledonous) leaf has greater number of stomata while in isobilateral (often monocotyledonous) leaf.why?
  • 1 answers

Meghna Thapar 4 years, 5 months ago

All surfaces of the leaf have some amount of stomata for regulating gas exchange for photosynthesis. However, the lower epidermis (the underside of the leaf) has more, because it is more often in the shade and so it is cooler, which means evaporation won't take place as much. Dicot leaves are also called as dorsiventral leaves because they possess distinct dorsal and ventral sides. Monocot leaves are called isobilateral leaves since both the sides of monocot leaves are more or less similar.

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