Which is the correct under of ecological hierachy ?

Options

A. Biome `to` Populations `to` Community `to` Organism
B. Organism `to` Biome `to` Population `to` Community
C. Population `to` Community `to` Biome `to` Organism
D. Organism `to` Population `to` Community `to` Biome

Answer

To determine the correct order of ecological hierarchy, we can break down the levels step by step:

### Step-by-Step Solution:

1. **Individual (Organism)**: The first level of ecological hierarchy is the individual, which refers to a single living entity that can carry out all life processes independently.

2. **Population**: When individuals of the same species come together in a specific geographical area, they form a population. This level focuses on a group of similar organisms.

3. **Community**: A community is formed when different populations (different species) interact in a defined area. For example, in a pond, you might find various species of plants, fish, and microorganisms, all of which make up the pond community.

4. **Ecosystem**: An ecosystem includes both the biological community (all the living organisms) and the physical environment (abiotic factors like soil, water, and climate) in which they interact.

5. **Biome**: A biome is a larger ecological unit characterized by specific climatic conditions and the types of vegetation and animal life that thrive in that environment. Examples include deserts, forests, and tundras.

6. **Biosphere**: The biosphere is the highest level of ecological hierarchy, encompassing all ecosystems on Earth. It includes all living organisms and their physical environments, extending from the atmosphere to the depths of the oceans.

### Correct Order of Ecological Hierarchy:
- Individual (Organism)
- Population
- Community
- Ecosystem
- Biome
- Biosphere

From the options provided, the correct sequence is:
1. Organism
2. Population
3. Community
4. Ecosystem
5. Biome
6. Biosphere

Thus, the correct option is option number 4.