Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Biology 2
| Question | Answer |
|---|---|
| What are the levels of ecological organization from broadest to most specific? | Biosphere → Biome → Ecosystem → Community → Population → Organism |
| How do autotrophs and heterotrophs acquire energy differently? | Autotrophs make their own energy (e.g., through photosynthesis); heterotrophs get energy by consuming others. |
| Why are decomposers important in a food chain/web? | They recycle nutrients by breaking down dead organisms. |
| How do photosynthesis and chemosynthesis compare? | Both produce food for autotrophs, but photosynthesis uses sunlight and chemosynthesis uses chemical energy. |
| Why is the pyramid shape used to show energy, biomass, or number of organisms? | Energy and biomass decrease as you move up trophic levels. |
| How does energy flow through an energy pyramid? | Energy decreases at each level—only ~10% transfers upward. |
| What can be interpreted from a food chain or web? | The direction of energy flow and the relationships between organisms. |
| What happens to energy, numbers, or biomass between trophic levels? | About 90% is lost as heat; only 10% passes on. |
| How do you identify a trophic level from a diagram or description? | By looking at where the organism falls in the energy flow (producer, primary consumer, etc.). |
| How do you classify a consumer based on what it eats? | By identifying whether it eats plants, animals, or both. |
| How do you know if an organism is an autotroph or heterotroph? | Autotrophs produce their food; heterotrophs consume other organisms. |
| Why must matter cycle in ecosystems? | Because matter is limited and must be reused by organisms. |
| What are the stages of the water cycle? | Evaporation, condensation, precipitation, collection |
| What are the stages of the carbon cycle? | Photosynthesis, respiration, decomposition, fossilization, combustion |
| What are the stages of the nitrogen cycle? | Nitrogen fixation, nitrification, assimilation, ammonification, denitrification |
| What's a unique feature of each biogeochemical cycle? | Water: physical changes; Carbon: combustion/fossil fuels; Nitrogen: bacteria-driven changes |
| How do organisms affect these cycles? | Humans burn fossil fuels; animals breathe, excrete, decompose; plants absorb nutrients |
| How can you label a biogeochemical cycle diagram? | By identifying and marking each stage clearly (e.g., evaporation, respiration) |
| How can you tell which cycle a stage belongs to? | Match it with key processes: water (precipitation), carbon (photosynthesis), nitrogen (fixation) |
| What causes high vs. low population density? | Availability of resources, space, predators, and competition |
| What's the difference between logistic and exponential growth? | Logistic: levels off at carrying capacity; Exponential: grows rapidly without limits |
| What are the three types of survivorship curves? | Type I: High survival (humans); Type II: Constant death rate (birds); Type III: High early death (fish) |
| What are the three types of dispersion patterns? | Clumped, uniform, and random |
| What are examples of limiting factors? | Food, water, disease, predators, weather, space |
| How are limiting factors classified? | Density-dependent (disease) vs. density-independent (weather); Biotic vs. Abiotic |
| How does a change in limiting factors affect population growth? | Increase in resources = growth; decrease = decline |
| How do you calculate population density? | Divide number of individuals by area (Density = N / Area) |
| How do you interpret a population growth graph? | Look for growth trends, plateaus, or declines over time |
| What starts primary succession? | No soil—starts on bare rock after volcanoes or glaciers |
| What starts secondary succession? | Disturbance in an area with soil—like fire or farming |
| How can humans impact succession? | Through deforestation, pollution, or urban development |
| What are pioneer species in each type? | Primary: lichen and moss; Secondary: grasses and weeds |
| How to identify succession type from a diagram? | Look for presence of soil: no soil = primary, soil = secondary |
| How do predator-prey relationships stabilize ecosystems? | They keep population sizes balanced through natural cycles |
| What's the difference between predation and parasitism? | Predation: one organism kills the other; Parasitism: one benefits, one is harmed but usually survives |
| What's the difference between interspecific and intraspecific competition? | Interspecific: between different species; Intraspecific: within the same species |
| How are organisms affected in symbiotic relationships? | Mutualism (+/+), Commensalism (+/0), Parasitism (+/-) |
| How to classify predation, competition, or symbiosis? | By analyzing who benefits or is harmed |
| How to classify predator, prey, host, or parasite? | Predator hunts; prey is hunted; parasite harms host |
| How to classify a symbiotic relationship as mutualistic, commensalistic, or parasitic? | Based on how each organism is affected: both benefit, one benefits & the other unaffected, or one benefits & the other harmed |
Created by:
user-1893198