Pre AP Biology -ECO 4.1 Interspecific Competition- MCQ Exam Style Questions -New Syllabus
Pre AP Biology -ECO 4.1 Interspecific Competition- MCQ Exam Style Questions – New Syllabus 2025-2026
Pre AP Biology -ECO 4.1 Interspecific Competition- MCQ Exam Style Questions – Pre AP Biology – per latest Pre AP Biology Syllabus.
▶️ Answer/Explanation
The correct option is d.
Fruits are mature ovaries that protect seeds and aid in their movement.
They facilitate seed dispersal by attracting animals to eat them.
Seeds are then deposited in new locations via animal waste.
Some fruits use wind or water mechanisms for transport.
This reduces competition between the parent plant and offspring.
Wider distribution increases the survival and range of the species.
▶️ Answer/Explanation
The correct answer is b.
A keystone species is defined by its disproportionately large effect on its natural environment relative to its abundance.
While many keystone species are apex predators (like wolves), they can also be ecosystem engineers (like beavers) or mutualists.
They are not typically the most abundant species in the ecosystem ($n$ is usually low).
Without them, the ecosystem would be dramatically different or cease to exist altogether.
Their presence maintains the structure and biodiversity of the entire ecological community.
Therefore, the defining characteristic is the critical importance of their ecological role.
▶️ Answer/Explanation
The correct answer is b. character displacement.
Sympatric mammals live in the same geographic area and often compete for similar resources.
To reduce $interspecific$ competition, species evolve diverging morphological traits.
Differences in molar structure allow species to exploit different food niches.
This evolutionary process is known as character displacement.
It ensures the coexistence of species by minimizing niche overlap.
Other options like $cryptic$ $coloration$ or $predation$ do not specifically drive molar divergence.