Question

1. if a snake species were introduced to an ecosystem where it has no natural predators, what long - term effect do you predict the snakes would have on the population dynamics of the ecosystem?

a. they would breed with native snake species, resulting in an increase in biodiversity in the ecosystem
b. they would compete with native snake species for resources, causing a decline in native snake populations and possible extinction of the native snakes
c. they would form mutualistic relationships with the native snakes, since they would occupy the same roles in the environment.
d. they would serve as a food source for predators of the native snakes, causing an increase in native snake populations.

Explanation:

• Option a: Introduced snakes without natural predators are unlikely to breed with native snakes if they are different species (which they likely are as they are introduced), and even if they did, it's not clear it would increase biodiversity in a positive long - term way.
• Option b: When a non - native species (snake) is introduced with no natural predators, it will compete with native snakes for resources (like food, habitat). Since it has no predators to limit its growth, its population can grow unchecked, out - competing native snakes which may lead to their decline or extinction.
• Option c: Mutualistic relationships are rare between introduced and native species in such a scenario. Also, if they occupy the same ecological roles (niche), it is more likely to be competitive rather than mutualistic.
• Option d: The problem states the introduced snake has no natural predators, so it won't serve as a food source for native snake predators.

Answer:

B. They would compete with native snake species for resources, causing a decline in native snake populations and possible extinction of the native snakes.