Question

Why petiole in Echhorjnica plant is spongy

Answer 1

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.

Answer 2

Answer:

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.

Explanation:

Some time the petiole becomes swollen and spongy due to the development of aerenchyma. The type of petioles encloses much air and helps the plant to float. e.g., Trapa bispinosa and Eichhornia.

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