Is xylem present in hydrophytes?

Is xylem present in hydrophytes?

Hydrophytes are the plants which are found in water. Xylem of hydrophytes is poorly developed. Vessels in the hydrophytes are completely absent but tracheas are well developed.

Why is the stem of hydrophytes spongy?

Stem is spongy due to well developed aerenchyma. The spongy and elongated petioles of water hyacinth exhibit the development of so-called aerenchyma. The floating leaves have waxy surface so that water may not wet the surface and block stomata.

Why hydrophytes do not have cuticle on stem and leaves?

Hydrophytes don’t have cuticle on the stem because they live in well watered environment (they have no any problem of water loss).

Do hydrophytes have vascular tissues?

characteristics of a typical hydrophytes, i.e., an abundances of aerenchyma, thin walled cells, lack of differentiated in vascular tissues and absences of any lignified mechanical tissues.

Why do hydrophytes have reduced structure?

The mechanical and vascular tissue of many hydrophytes is reduced and supports them. They often have large intercellular air spaces in their stems, roots, and leaves to overcome the difficulty of obtaining gases from the water. Aquatic plants can only grow in water or in soil that is permanently saturated with water.

Which tissues are least developed in hydrophytes?

Xylem is less develop in hydrophytes because hydrophytes has access to abundant water. It mean water can easily diffuse in every part of plant and do not need to be transported through xylem.

Why do submerged plants lack cuticle?

Most submerged plants such as Eurasian water milfoil (upper left) and the “hornwort” (lower left and right) lack cuticle, stomata, and xylem, because they have no need of water transport or additional support. Sunlight diminishes with increasing water depth.

What is the role of cuticle in Hydrophytes?

Hydrophytes and underground organs do not contain it. It does not exist. Since excavations are supposed to absorb water. Water is kept in the plant by the cuticle on the stem and leaves; water is kept out by the cuticle on the root.

How are hydrophytes adapted to their functions?

Hydrophytes are plants like water lilies that have adapted to living in watery conditions. They have little to no root systems and have leaves that often help in flotation. They have deep root structures, thin or small leaves, and waxy surfaces to retain moisture.

Why hydrophytes do not have cuticle on stem or leaves?

Which is absent in leaves submerged hydrophytes?

Stomata is absent in submerged hydrophytes because they live in a water-abundant area from which they derive all their nutrients.