Question

why petiole in Eichhornica plant is spongy​

Answer 1

Answer:

Explanation:

Eichhornia is a free-floating aquatic plant. The petiole bears a large membranous stipule, which forms a sheath around the next younger leaf. Petioles are spongy and form a bulbous float containing air-filled lacunate tissue.

Therefore, the correct answer is option B.

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Answer 2

There are air-filled cavities or air chambers in the petiole of Eichhornica plants to offer buoyancy for floating on water. That is why Eichhornica's petiole is spongy.

Explanation:

• The formation of aerenchyma in the petiole causes it to become bloated and spongy. These sorts of petioles help the plant float by enclosing air.
• The water hyacinth's inflated and spongy leaf stalk, stem, and petioles enable it to float on the water's surface.
• Because the stem, leaf, and stalk are loaded with air, the water hyacinth may float above the water.
• Eichhornia, or water hyacinths, was a polyphyletic genus of aquatic flowering plants belonging to the Pontederiaceae family.