Answer: contains teh majority of the photosynthetic tissue. this layer of the leaf
 consists of a type of leaf parenchyma that contains a large number of cells
 arranged in a way that provides the internal anatomy of the leaf with
 numerous air spaces. these air spaces will alow air to circulate throughout
 the mesophyll layer and connect to the external envoiroment via the
 stomata. the circulation of air throughtout the leaf brings CO2 to the
 photosynthetic cells where it will ultimately be used in the carbon
 fixation process and O2 away from the photo synthetic cells where it can
 enter the atmosphere. leaves that are orientated perpendicular to the rays
 of the sun have two layers of mesophyll
  mesophyll
 Mesophyll  is usually specialized as a photosynthetic tissue. In roses  as in many  plants  particularly in dicotyledons  the  mesophyll  is differentiated into palisade parenchyma and spongy parenchyma (Figure  4). The palisade cells are always found on the adaxial surface of the leaf.
 The central leaf  or  mesophyll   consists of soft-walled  unspecialized cells of the type known as  parenchyma. As much as one-fifth of the mesophyll is composed of  chlorophyll-containing chloroplasts  which absorb sunlight and  in  conjunction with certain enzymes  use the radiant energy in decomposing  water into its elements
 More Mesophyll images
 Mesophyll  definition is - the parenchyma between the epidermal layers of a foliage  leaf.
 The  mesophyll  is a soft spongy material located between the upper and lower epidermal  surfaces  and is where photosynthesis takes place. It also contains...
    																																	   																																	
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