Question

Roots play insignificant role in absorption of water in

• A. pea
• B. wheat
• C. sunflower
• D. Pistia.

Answer 1

The Correct Option is D

The question asks about a plant in which roots play an insignificant role in the absorption of water. Among the given options, let's analyze each:

• Pea: The pea plant has roots that actively absorb water from the soil.
• Wheat: Wheat also uses its root system to absorb water efficiently.
• Sunflower: Like other terrestrial plants, sunflowers rely heavily on their root system for water absorption.
• Pistia: Pistia, commonly known as water lettuce, is an aquatic plant that floats on water surfaces. In aquatic environments, absorption occurs through all parts of the plant, especially the leaves, and not predominantly through the roots. Hence, the role of roots in water absorption is insignificant.

Based on the above analysis, the correct answer is Pistia. In aquatic plants like Pistia, the surrounding water is directly absorbed by all the parts of the plant, reducing the importance of roots for water absorption.