Question

Swollen and spongy petioles or leaf stalk keep water hyacinth afloat. True or false

Answer 1

Answer:

The given statement Swollen and spongy petioles or leaf stalk keep water hyacinth float is true.

Explanation:

The leaf stalks of water hyacinth are hallow and sponge like due to the presence of air filled cavities called parenchyma.

These allow the plant to bloat on water by releasing oxygen.

This released oxygen allow plant to float on water.

Answer 2

Swollen and spongy petioles or leaf stalk keep water hyacinth afloat. The statement is true.  

Explanation:

• The swollen and spongy leaf stalk, stem, and petioles of the water hyacinth help them to float on the water surface.
• The air is filled in the stem, leaf and the stalk so this is the reason the water hyacinth can float over the water.
• The air is present inside the hollow stem in the parenchyma tissue. Inside the stem of the plants, there is a large space or large cavities where the air is present.

To know more

Swollen spongy petiole is present in [APMEE 1996]

A) Hydrilla

B) Eichhornia

C) Ruppia

D) Pistia

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Explain the significance of acrenchyma present in swollen petiole of water hyacinth

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