Question

how does arenchyma tissue help a plant

Answer 1

Aerenchyma helps the plants to float on water.It provides bouyancy to the plant.

Hope it helps!

Answer 2

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.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.
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