Unit 5 of 5
Study guide for CLEP CLEP Biology — Unit 5: Ecology and Population Biology. Practice questions, key concepts, and exam tips.
85
Practice Questions
20
Flashcards
9
Key Topics
Try these 5 questions from this unit. Sign up for full access to all 85.
A forest ecosystem is disrupted by a wildfire, resulting in a significant decrease in the population of deer, a primary consumer. Which of the following is the most likely effect on the ecosystem?
An increase in the population of plants, due to reduced herbivory
A decrease in the population of plants, due to increased competition from other herbivores
No significant change in the population of plants, as deer are not a keystone species
A decrease in the population of predators, due to reduced prey availability
An increase in the population of predators, due to increased availability of other prey
Answer: A — Reduced deer population leads to less herbivory, allowing plant populations to increase.
Species in unpredictable environments often exhibit
Homeostatic traits
K-selected traits
Static traits
Genetic traits
r-selected traits
Answer: E — r-selected traits is correct because r-selected species are adapted to unstable environments.
What is the name of the international agreement aimed at reducing greenhouse gas emissions?
Kyoto Protocol
Paris Agreement
Basel Convention
Montreal Protocol
Stockholm Convention
Answer: B — When you turn on the news and hear about countries working together to combat climate change, you're likely hearing about efforts related to the Paris Agreement. This international agreement aims to reduce greenhouse gas emissions and mitigate the effects of global warming. The Paris Agreement is the correct answer because it specifically targets emissions reductions. In contrast, the Kyoto Protocol, while also focused on emissions, is an earlier agreement that the Paris Agreement built upon.
Environmental unpredictability favors the survival of
K-selected species
Species with high biodiversity
R-selected species
Species with low competition
Species with high predation
Answer: C — R-selected species is correct because r-selected species are adaptable.
What is the primary cause of biodiversity loss worldwide?
Climate change
Pollution
Overfishing
Invasive species
Habitat destruction
Answer: E — Habitat destruction is correct because human activities like deforestation, land conversion, and urbanization lead to the destruction and fragmentation of natural habitats, resulting in population decline and extinction of many species.
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