Ecological equivalents meant for

Options

A. Two similar ecological niche in same geographical location
B. Two similar ecological niche in two different geographical locations
C. Organisms that similar ecological niche in different geographical locations
D. Organisms tha occypy different ecological niche in different geographical locations

Answer

### Step-by-Step Solution

1. **Understand the Concept of Ecological Equivalence**:
- Ecological equivalents refer to organisms that occupy similar ecological niches or roles in different geographical locations. These organisms may perform similar functions in their respective ecosystems but are not closely related in terms of evolutionary lineage.

2. **Identify the Key Characteristics**:
- They are unrelated organisms.
- They inhabit similar habitats.
- They perform similar ecological roles.
- They are found in different geographical locations.

3. **Consider Examples**:
- A classic example of ecological equivalents is the shark and the dolphin. Sharks are cartilaginous fish, while dolphins are mammals. Despite their different evolutionary backgrounds, they occupy similar ecological niches in marine environments.

4. **Analyze the Options Given**:
- Option 1: Two similar ecological links in the same geographical location - This is incorrect as ecological equivalents are not necessarily found in the same location.
- Option 2: Two similar ecological links in two different geographical locations - This is partially correct but does not specify the unrelated nature of the organisms.
- Option 3: Organisms that are similar ecological links in different geographical locations - This is the most accurate definition of ecological equivalents.

5. **Conclude the Correct Answer**:
- Based on the understanding of ecological equivalents and the analysis of the options, the correct answer is: **Organisms that are similar ecological links in different geographical locations**.