the stem
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Leaf petiole
It contains air spaces (aerenchyma) within the cells of the petiole
Aquatic plants need light too and water hyacinths are aquatic plants. They have air spaces inside them which help them to float freely in the water.
The swollen leaf stalks have air spaces that trap air to allow the water hyacinth to float.
The water hyacinth's roots are in water, while the sunflower's roots are in soil. The Water hyacinth's leaf stalks are swollen and contains air, while the sun flower's leaf stalks are different in shape
The layer underground where all empty spaces are filled with a combination of air and water is called the vadose zone or the unsaturated zone. This zone is located above the water table and allows movement of both air and water through it.
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Zone of saturation
Zone of saturation
The leaves of water hyacinth are long and leathery and have wax coating surrounding them. They are made up of long spongy parenchyma tissues that have several air pockets. The air pockets help the leaves to stand erect and float on the surface of water. Arsha 9th
The water hyacinth has inflated balloon-like stems known as pneumatophores. They are specialized structures that help the plant float and absorb oxygen from the air. The fern, pine, and grass plants do not typically have balloon-like stems.