Standing state is per unit amount of

Options

A. biomass
B. living matter
C. inorganic matter
D. biogenetic material

Answer

To solve the question regarding the standing state, let's break it down step by step:

### Step-by-Step Solution:

1. **Understanding the Term "Standing State":**
- The standing state refers to the amount of certain materials present in a given area at a specific time. It can include various types of matter.

2. **Identifying the Types of Matter:**
- The types of matter that can be considered in the standing state include:
- Biomass
- Living matter
- Inorganic matter
- Biogenetic material

3. **Analyzing Each Option:**
- **Biomass:** This refers to the total mass of living matter in a specific area. However, it is typically referred to as "standing crop" when considering biomass at a specific time.
- **Living Matter:** Similar to biomass, this includes all living organisms in an ecosystem but does not specifically define the standing state.
- **Inorganic Matter:** This includes minerals and nutrients found in the soil. The standing state can be defined as the amount of inorganic matter present in the soil per unit time.
- **Biogenetic Material:** This is not typically found in soil and does not relate to the standing state.

4. **Conclusion:**
- Based on the definitions and analysis, the standing state is best defined as the amount of inorganic matter present in the soil per unit time.

5. **Final Answer:**
- The standing state is per unit amount of **inorganic matter**.