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Bio 4 evil jessica
| Question | Answer |
|---|---|
| Which of the following are the two key emergent properties of an ecosystem? | energy flow and chemical cycling |
| students studying a ponc observed crayfish, snails, larvae, herbs grass, insects, and millions of bacteria, all interactin with abiotic environment, (air, soil, water, nutrients). Which term best describes this in the entirety of what they are observing? | Ecosystem |
| Which of the following best explains the need for a constant influx of sunlight to sustain Earth's biosphere? | energy from sunlight moves through ecosystems but is lost as heat |
| Which of the following best represents the actions of photoautotrophs? | produce, and use, both oxygen and carbon dioxide |
| If the sun stopped providing energy to Earth, most ecosystems would eventually vanish. Which of the following ecosystems would likely survive the longest after this hypothetical disaster? | deeeeep benthic ocean |
| Which of the following organisms is correctly paired with its trophic level? fungus-primary consumer grasshopper-secondary consumer cyanobacterium-primary consumer phytoplankton-primary producer | Phytoplankton 😛 |
| Which of the following has the greatest effect on the rate of chemical cycling within an ecosystem? | The rate of decomposition in the ecosystem |
| Which of the following best explains why terrestrial productivity is higher in equatorial climates than in temperate climates? | Productivity increases with temperature and water availability. |
| Many of the organisms in the ocean are nutrient-limited. Which of the following would be the most reasonable approach if you wanted to investigate this phenomenon? | experimentally enrich some areas of the ocean and compare their productivity to that of untreated areas |
| Which of the following is a reason that a diet consisting primarily of fruits and vegetables results in a smaller ecological footprint than a diet high in meat content? | Eating meat is an inefficient way of acquiring photosynthetic productivity. |
| For most terrestrial ecosystems, pyramids composed of species abundances, biomass, and energy are similar in that they have a broad base and a narrow top. The primary reason for this pattern is that ____ | at each step, energy is lost from the system |
| Consider the food chain of grass → grasshopper → mouse → snake → hawk. About how much of the chemical energy fixed by photosynthesis of the grass (100 percent) is available to the hawk, assuming a 10% trophic efficiency? | 0.01% 😡 |
| Which of the following statements is correct about biogeochemical cycling? | The phosphorus cycle involves the weathering of rocks 🪨 |
| Which of the following best describes the role of nitrifying bacteria in the nitrogen cycle? | converting ammonium to nitrate, which plants absorb 🤥 |
| Which of the following best represents the goal of restoration ecology? | returning degraded ecosystems to a more natural state🍔 |
| If all individuals in the last remaining population of a particular frog species were all highly related, which type of diversity would be of greatest concern when planning to prevent the species from going extinct? | Genetic diversity 🧬 |
| Which of the following observations provides the best evidence of a biodiversity crisis? | High rate of extinction 💔😵😭✌️ |
| Which of the following terms includes all of the others? | Biodiversity 🫂 |
| Which of the following best describes how introduced species can have deleterious effects on the biological communities they invade? | competing with native species for resources and displacing them🤺 |
| Overharvesting encourages extinction and is most likely to affect? | large animals with low intrinsic reproductive rates🥀 |
| Which of the following criteria must be met for a species to qualify as invasive? | introduced to a new area, spreads rapidly, and displaces native species🤬 |
| Researchers have been studying a rare population of 87 voles in an isolated area.10 voles from a larger population were introduced into this isolated population. Besides having 10 more individuals, which of the following is another benefit of the addition | Increasing genetic diversity 😴😴 |
| Which of the following strategies would most rapidly increase the genetic diversity of a population in an extinction vortex? | Introduce new individuals from other populations of the same species. |
| Which of the following is the main purpose of movement corridors? | To connect two otherwise isolated populations.👷♂️ |
| Which of the following nations has become a world leader in the establishment of zoned reserves? | Costa Rica 🇨🇷 |
| Which of the following outcomes is caused by excessive nutrient runoff into aquatic ecosystems? | Eutrophication 🍊 |
| Which of the following factors causes extremely high levels of toxic chemicals in fish-eating birds? | Biological magnification 🔎🔍🔎🔍🔎🔍 |
| Which of the following statements about protected areas that have been established to preserve biodiversity is correct? | Management of a protected area should be coordinated with management of the land surrounding the area.😨 |
| Which of these is a consequence of biological magnification? 😱 | Toxic chemicals in the environment pose greater risk to top-level predators than to primary consumers. 🍽️ |
| A ______ is a relatively small area with a great concentration of endemic species and many endangered and threatened species | Biodiversity hotspot 🔥 |
Created by:
Deadcow123