Function of root.

**The reasoning** Roots are the underground part of a plant, and their **primary function is absorption**. They absorb water and dissolved minerals from the soil through tiny root hairs that increase the surface area. This water then travels up through the stem to reach all parts of the plant. Think of roots as the plant's "drinking straws" buried in the ground. While plants need many functions to survive, each organ has its main job — and for roots, that's **absorbing water and minerals** plus anchoring the plant firmly in soil. **Why the wrong options tempt you** **A) Make food** — This happens in the *leaves* through photosynthesis (using sunlight, CO₂, and water). The green chlorophyll is up there, not in roots! **C) Transpire** — Transpiration (water loss) occurs through tiny pores called *stomata* in the leaves, not roots. **D) Reproduce** — While some plants can reproduce through roots (like sweet potato), it's not the primary function. That's a bonus feature, not the main job. **Quick takeaway** Remember: **Roots = Absorption**, Leaves = Food-making and Transpiration — each plant organ has its specialty, and roots specialize in soaking up water from below!