Create Standards-Aligned Questions Instantly
Powered by AI. Backed by pedagogy. Ready in seconds.
Sample Question of the Day
Multiple choice📘 MS-LS2-1🧠 DOK 4
In a lush forest ecosystem, a variety of organisms co-exist and rely on each other for survival. Among these organisms are deer, wolves, and a wide range of plant species. The deer primarily feed on the vegetation, while wolves prey on the deer. Over several years, scientists observed changes in the population sizes of these organisms as seasons changed and resources varied. During a particularly dry season, the vegetation available for the deer decreased significantly, impacting the entire ecosystem.
Question:
Based on the described forest ecosystem and the changes observed during the dry season, which of the following analyses best explains the cascading effects on the populations of deer and wolves?
Answer Choices:
- A) A decrease in vegetation leads to a decrease in the deer population, which subsequently causes a decrease in the wolf population due to reduced food availability.
- B) A decrease in vegetation leads to an increase in the deer population due to less competition, which causes an increase in the wolf population.
- C) A decrease in vegetation leads to an increase in deer population because they find alternative food sources, stabilizing the wolf population.
- D) A decrease in vegetation has no effect on the deer population, but the wolf population decreases due to other factors.
✅ Answer:
A decrease in vegetation leads to a decrease in the deer population, which subsequently causes a decrease in the wolf population due to reduced food availability.
💡 Explanation:
- In this forest ecosystem, the deer depend on vegetation for food.
- A decrease in vegetation during the dry season results in a reduced food supply for the deer, leading to a decline in their population.
- As the primary prey for wolves, the decrease in the deer population subsequently causes a decrease in the wolf population due to the reduced availability of food.
Standard: MS-LS2-1 | DOK: 4