Bio 152 Ecology UW Madison Questions and Answers | Latest Update | 2024/2025 | 100% Pass
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Module
Bio 152 Ecology UW Madison
Institution
Bio 152 Ecology UW Madison
Bio 152 Ecology UW Madison Questions
and Answers | Latest Update | 2024/2025
| 100% Pass
What is the primary factor that drives the global distribution of biomes?
Climate, specifically temperature and precipitation, determines the types of biomes found in
different areas.
How does the c...
Bio 152 Ecology UW Madison Questions
and Answers | Latest Update | 2024/2025
| 100% Pass
What is the primary factor that drives the global distribution of biomes?
✔✔Climate, specifically temperature and precipitation, determines the types of biomes found in
different areas.
How does the concept of "carrying capacity" apply to population dynamics?
✔✔Carrying capacity refers to the maximum population size that an environment can support
based on available resources.
What role do keystone species play in an ecosystem?
✔✔Keystone species have a disproportionate impact on the structure and diversity of an
ecosystem, often maintaining ecological balance.
What is the difference between a food chain and a food web?
✔✔A food chain shows a linear sequence of who eats whom, while a food web consists of
interconnected food chains, reflecting the complexity of feeding relationships.
1
,Why is energy lost between trophic levels in an ecosystem?
✔✔Energy is lost as heat due to metabolic processes and inefficiency in energy transfer between
organisms in the food chain.
What is the main difference between primary and secondary succession?
✔✔Primary succession occurs in an area where no soil exists, while secondary succession
happens in areas where soil remains after a disturbance.
How do mutualistic relationships benefit both species involved?
✔✔In mutualism, both species benefit from the interaction, such as pollinators and plants, where
both parties receive something of value.
What is the significance of biodiversity in an ecosystem?
✔✔Biodiversity contributes to ecosystem stability, resilience, and productivity by providing a
variety of functions and services.
What is the role of decomposers in nutrient cycling?
✔✔Decomposers break down organic matter, releasing essential nutrients back into the soil and
making them available for plants.
2
,How does a population’s age structure affect its growth rate?
✔✔A population with a higher proportion of individuals in reproductive age will tend to grow
faster than a population with more individuals in non-reproductive stages.
What is the greenhouse effect, and how does it relate to climate change?
✔✔The greenhouse effect occurs when gases like CO2 trap heat in the atmosphere, contributing
to global warming and climate change.
What does the term "ecological footprint" refer to?
✔✔The ecological footprint is the measure of human demand on Earth's ecosystems, indicating
how much land and resources are required to support a population.
How does species competition influence community structure?
✔✔Competition for resources can limit the population size of species, affect their distribution,
and shape the overall structure of the community.
What is the difference between a niche and a habitat?
3
, ✔✔A habitat is the physical environment where an organism lives, while a niche refers to an
organism's role within that environment, including its interactions with other species.
What are invasive species, and how do they impact native ecosystems?
✔✔Invasive species are non-native organisms that disrupt local ecosystems by outcompeting
native species for resources, often leading to biodiversity loss.
How do carbon and nitrogen cycles interact in an ecosystem?
✔✔Both cycles involve the movement of these essential elements through the atmosphere, soil,
plants, and animals, with nitrogen fixation and carbon sequestration being key processes.
What is the role of apex predators in regulating ecosystems?
✔✔Apex predators help regulate prey populations, which can prevent overgrazing and promote
biodiversity within the ecosystem.
How do symbiotic relationships like parasitism affect populations?
✔✔Parasitism harms one species (the host) while benefiting the parasite, often leading to
negative impacts on host population size and health.
4
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