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Which of the following statements is not true about "ecological niche" ?
Explanation
An ecological niche describes the functional role and specific physical space occupied by a species in an ecosystem. Statement C is incorrect because, in a natural ecosystem, the availability of sufficient and diverse resources generally supports a larger number of species through niche partitioning and specialization. High resource availability allows different species to coexist by utilizing different aspects of the environment.
- Option A: Dominant species often possess broader ecological niches or utilize resources more extensively than rare species.
- Option D: When resources are distributed equitably, it prevents a single species from monopolizing the habitat, thereby reducing dominance and increasing species evenness.
Therefore, the assertion that species numbers decrease when resources are sufficient is ecologically false.
SIMILAR QUESTIONS
With reference to ecological niche, which of the following statements is/are correct ?
1. It represents the range of conditions that it can tolerate the resources it utilizes and its functional role in ecological system.
2. Each species has a distinct niche.
Select the correct answer from the code given below :
Code :
The fundamental niche of a species refers to
Consider the following statements :
Statement-I :
Trophic relationship within ecological communities tends to be complex and web-like.
Statement-II :
Many consumers feed on more than one species and are fed upon by more than one species.
Which one of the following is correct in respect of the above statements?