Active uptake of minerals depends upon :-

Options

A. Active water absorption
B. Transpiration
C. Photo respiration
D. Dephosphorylation

Answer

To answer the question "Active uptake of minerals depends upon:", we can break down the solution into the following steps:

### Step 1: Understanding Active Uptake
Active uptake refers to the process by which plants absorb minerals from the soil against their concentration gradient. This means that energy is required for the uptake of these minerals.

**Hint:** Consider the definition of active transport and how it relates to energy usage.

### Step 2: Role of Cellular Energy
The active uptake of minerals involves the use of cellular energy (usually in the form of ATP). This energy is necessary to move ions from an area of lower concentration to an area of higher concentration.

**Hint:** Think about how energy is utilized in biological processes and why it's important for moving substances against their gradient.

### Step 3: Active Transport Mechanism
Active transport is the mechanism through which minerals (in ionic form) are absorbed by plant roots. This process is facilitated by specific transport proteins in the cell membranes that require energy to function.

**Hint:** Recall the different types of transport mechanisms in cells and how they differ in energy requirements.

### Step 4: Connection to Water Absorption
Active water absorption is closely linked to the active uptake of minerals. Water is essential for dissolving minerals in the soil, and its absorption often occurs simultaneously with the uptake of minerals. The movement of water can create a gradient that aids in the absorption of minerals.

**Hint:** Consider how water and minerals interact in the soil and the role of roots in this process.

### Step 5: Conclusion
Based on the above steps, we conclude that the active uptake of minerals depends on active water absorption, as it is a process that requires energy and is integral to the overall mechanism of nutrient uptake in plants.

**Final Answer:** Active uptake of minerals depends upon active water absorption.