Which of the following statement is incorrect ?

Options

A. Speciation is generally a function time.
B. Tropical environment unlike temperate ones are less seasonal .
C. Constant environment does not promote niche specialization.
D. There is more solar energy available in tropics

Answer

To solve the question "Which of the following statement is incorrect?", we will analyze each statement provided in the options.

### Step-by-Step Solution:

1. **Understanding Speciation**:
- The first option states that "speciation is generally a function of time."
- This statement is **correct** because speciation, the process by which new species arise, typically occurs over long periods due to evolutionary changes.

**Hint**: Speciation involves gradual changes over time, often influenced by environmental factors.

2. **Tropical vs. Temperate Environments**:
- The second option claims that "tropical environments, unlike temperate ones, are less seasonal."
- This statement is also **correct**. Tropical environments tend to have more stable climates with less seasonal variation compared to temperate regions.

**Hint**: Consider how climate stability affects biodiversity in different regions.

3. **Niche Specialization**:
- The third option states that "a constant environment does not promote niche specialization."
- This statement is **incorrect**. In fact, a constant environment tends to promote niche specialization because organisms can adapt to specific roles within a stable ecosystem.

**Hint**: Think about how organisms adapt to their environments over time.

4. **Solar Energy Availability**:
- The fourth option mentions that "there is more solar energy available in tropics."
- This statement is **correct**. The tropics receive more direct sunlight due to the angle of the Earth’s tilt, leading to higher solar energy availability.

**Hint**: Reflect on how sunlight impacts ecosystems and energy availability.

### Conclusion:
After analyzing all the statements, the **incorrect statement** is: "a constant environment does not promote niche specialization."

### Final Answer:
The incorrect statement is: **"Constant environment does not promote niche specialization."**

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