difference between aerenchyma.and chlorenchyma
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Aerenchyma is a spongy tissue that forms spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root.[1] The channels of air-filled cavities (see image to right) provide a low-resistance internal pathway for the exchange of gases such as oxygen and ethylene between the plant above the water and the submerged tissues. Aerenchyma is also widespread in aquatic and wetland plants which must grow in hypoxic soils
Chlorenchyma is a special type of Parenchyma tissue. It is special, because it contains chlorophyll- the green coloured pigment that is responsible for photosynthesis. All cells in parenchyma have similar function as it is a simple permanent tissue, hence all cells in chlorenchyma , apart from filling bulk space, performs an additional task of photosynthesis. It is the mesophyll part of plant leaves and is also present in stems of some plants.
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