Which level of organization do all of the Mojave grasshoppers in a creosote bush microhabitat form?

• A. Community
• B. Organism
• C. Ecosystem
• D. Population

Answer: (D)

Verified step by step guidance

1. Understand the concept of biological organization levels: Biological organization ranges from smallest to largest as organism, population, community, ecosystem, and biosphere. Each level represents a different grouping or interaction of living organisms and their environment.
2. Define 'Population': A population consists of all individuals of the same species living in a specific area at the same time. In this case, all Mojave grasshoppers in the creosote bush microhabitat belong to the same species and are grouped together as a population.
3. Clarify why 'Community' is incorrect: A community includes all populations of different species living and interacting in a specific area. Since the problem specifies only Mojave grasshoppers, it does not include other species, so it cannot be a community.
4. Clarify why 'Organism' is incorrect: An organism refers to a single individual of a species. The problem refers to all Mojave grasshoppers collectively, not a single individual, so 'Organism' is not the correct answer.
5. Clarify why 'Ecosystem' is incorrect: An ecosystem includes all living organisms (biotic factors) and their physical environment (abiotic factors) in a specific area. The problem focuses only on Mojave grasshoppers, not their environment or other species, so 'Ecosystem' is not the correct answer.