Why all minerals are not passively absorbed by roots ? Give any one reason.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Mineral Absorption**: Plants absorb minerals from the soil through their roots. These minerals are usually present in the form of ions.

2. **Passive Absorption**: Some minerals can be absorbed through a process called passive diffusion. This process does not require energy because it relies on the concentration gradient, where minerals move from an area of higher concentration (soil) to an area of lower concentration (roots).

3. **Concentration Gradient**: For passive absorption to occur, there must be a difference in concentration between the soil and the root cells. If the concentration of minerals in the soil is higher than that in the roots, then passive absorption can happen.

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