Where are mesophyll cells located within a leaf?

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Detailed Solution

Mesophyll cells are found within the inner tissue of a leaf, positioned between the upper and lower epidermis. These cells consist of two main types — palisade mesophyll and spongy mesophyll — each playing a unique role in photosynthesis and gas exchange.

Detailed Location Within the Leaf

Location: Present between the upper and lower epidermal layers of the leaf.

Palisade Mesophyll

Position: Located just beneath the upper epidermis.

Characteristics: Made up of elongated, tightly packed cells loaded with chloroplasts. These cells are the primary site for photosynthesis, capturing sunlight efficiently.

Spongy Mesophyll

Position: Found below the palisade mesophyll and above the lower epidermis.

Characteristics: Composed of loosely arranged, irregularly shaped cells with large air spaces. These spaces help in the easy exchange of gases such as carbon dioxide and oxygen within the leaf.

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