Which type of keystone species feeds on other animals and helps prevent those populations from damaging the ecosystem?

• A. Keystone engineers
• B. Keystone predators
• C. Keystone mutualists
• D. Primary producers

Answer: (B)

Verified step by step guidance

1. Step 1: Begin by understanding the concept of a keystone species. Keystone species are organisms that have a disproportionately large impact on their ecosystem relative to their abundance. Their presence or absence can significantly affect the structure and function of the ecosystem.
2. Step 2: Review the different types of keystone species mentioned in the problem: Keystone engineers, Keystone predators, Keystone mutualists, and Primary producers. Each type plays a unique role in the ecosystem.
3. Step 3: Focus on the role of Keystone predators. Keystone predators feed on other animals and regulate their populations, preventing overpopulation that could lead to ecosystem damage, such as overgrazing or depletion of resources.
4. Step 4: Compare Keystone predators to the other options. Keystone engineers modify the environment (e.g., beavers building dams), Keystone mutualists engage in mutually beneficial relationships (e.g., pollinators), and Primary producers are organisms like plants that produce energy through photosynthesis. None of these directly regulate animal populations through predation.
5. Step 5: Conclude that the correct type of keystone species described in the problem is Keystone predators, as they help maintain ecological balance by feeding on other animals and preventing population damage to the ecosystem.