Which one of the following is a group of roots ?

The correct answer is Carrot, Beetroot, Radish.

Explanation:

In botany, plant structures are classified based on their anatomical characteristics, particularly whether they function as modified roots or modified stems:

1. Roots: Structures like Carrot, Beetroot, Radish, and Sweet Potato are modified taproots or root tissues designed to store food. They absorb water and nutrients from the soil and do not possess nodes, internodes, terminal buds, or scale leaves.

2. Stems: Structures like Potato (a stem tuber), Ginger (a rhizome), and Turmeric (a rhizome) are modified underground stems. They possess nodes, internodes, scale leaves, and buds from which shoots can sprout.

Let's analyze the options provided:

• Beetroot, Potato, Ginger: Potato and Ginger are underground stems, not roots.
• Carrot, Turmeric, Ginger: Turmeric and Ginger are underground stems (rhizomes).
• Sweet Potato, Radish, Turmeric: Turmeric is an underground stem.
• Carrot, Beetroot, Radish: All three plants in this group are true modified roots.

Therefore, the group consisting entirely of roots is Carrot, Beetroot, Radish.