Consider the following functions for plants :

A. To give support to the plant

B. To provide humus

C. To store food

D. To absorb water and minerals

The functions of roots are

The correct option is A, C and D.

Let us analyze the functions of roots in plants step-by-step:

1. Function A (To give support to the plant):
Roots anchor the plant firmly in the soil, providing mechanical support and stability so that the plant remains upright.

2. Function B (To provide humus):
Humus is organic matter formed in the soil by the decomposition of plant and animal residues by microorganisms. Roots do not provide humus to the soil while performing their living functions.

3. Function C (To store food):
In many plants (such as carrots, radishes, and sweet potatoes), roots are modified to store food reserve materials.

4. Function D (To absorb water and minerals):
The primary function of roots is to absorb essential water and dissolved minerals from the soil and transport them upward to the rest of the plant.

Therefore, statements A, C, and D represent the main functions of roots.