Question

Identify A, B, C plants in a series based on these characters of roots:
A. Roots at lower nodes of stem
B. Roots absorb water and food from host plant
C. Root forming nodules
 

• A. Vanda, Viscum, Cuscuta
• B. Avicennia, Striga, Pisum
• C. Maize, Viscum, Vanda
• D. Sugarcane, Rafflesia, Groundnut

Hint:

Link root characteristics to their ecological roles and adaptations for better understanding of plant functions.

Answer 1

The Correct Option is D

Step 1: Analyzing root characteristics. 
Sugarcane (A) roots develop at lower nodes, which help in stabilizing the plant and assisting in vegetative propagation. Rafflesia (B) does not produce its own food and instead absorbs nutrients and water from the host plant via its haustoria (modified roots), fitting the parasitic lifestyle. Groundnut (C) plants have root nodules that house nitrogen-fixing bacteria, essential for converting atmospheric nitrogen into a form usable by the plant. 
Step 2: Matching root functions with plant types. 
This match is essential for understanding the ecological roles and adaptations of these plants, linking root structures and functions with their environmental strategies.