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Biology Test Chap. 4
Questions and Answers to study guide questions
| Question | Answer |
|---|---|
| The tendency for warm air to rise and cool air to sink results in | global wind patterns |
| An organism's niche is | The range of physical and biological conditions in which an organism lives and the way it obtains what it needs to survive and reproduce |
| Polar bears live in the arctic. The arctic is their | habitat |
| An interaction in which an animal feeds on plants is called | hebivory |
| Which of the following occurs during the ecological succession of an ecosystem | Living organisms modify their environment a little at a time |
| An example of a human made disturbance is | forest-clearing |
| Climate is a global factor that produces | a wide range of environmental conditions that shape communities |
| Which biome is characterized by very low temperatures, little precipitation and permafrost? | tundra |
| Which two biomes have the least precipitation? | tundra and desert |
| Which biome has long cold winters and short summers, and is come to conifers? | boreal forest |
| Which of the following is not a freshwater ecosystem? | an estuary |
| Freshwater ecosystems that often originate from underground sources in mountains or hills are | rivers and streams |
| The photic zone | extends to a depth of about 200 meters |
| Which of the following statements is not true about the open ocean? | The open ocean begins at the low tide mark and extends to the end of the of the continental shelf |
| Carbon dioxide, methane, and water vapor trap ___ energy. | light |
| Two kinds of birds eat the same food and nest in the same area. These two species of birds are in ____. | symbiosis |
| If too many herbivores live in a community, the ___ population will decrease rapidly. | producer |
| A symbiotic relationship between organisms in which one species benefits and the other is neither helped nor harmed is ___. | commensalism |
| A series of more-or-less predictable changes that occur in a community over time is _______. | ecological succession |
| Because of the Earth's curvature, the polar regions receive ___ sunlight than the tropical regions. | less |
| As shown in figure 4-3, the climate zone that receives the most direct sunlight throughout the year lies between ____ and ____ latitudes. | 23.5N and 23.5S |
| Abandoned farmland in North America usually returns to its original ___. | climax community |
| A freshwater ecosystem that can purify water by filtering pollutants and help to prevent flooding by absorbing large amounts of water is a ___. | wetland |
| Because the water is shallow and rich in nutrients, the ___ ocean ecosystem is very productive. | marine |
| How are micro climates related to climates? | An area's climate is made up of the average conditions for that area over long periods. A climate area can be divided into several micro climates because environmental conditions can vary over small distances. |
| Explain what would happen if two mouse species tried to occupy the same niche in a meadow. | The two species would be in competition. One species would win but the other would die out. |
| How do predators affect the population of their prey? | Predators keep the population of their prey from getting too large by eating the prey animals. |
| Lake and pond water circulates. What does this circulation do for the lake or pond? | Circulation distributes heat, oxygen and nutrients. |
| Which marine ecosystem contains the fewest photosynthetic producers? Why don't more photosynthetic producers live in this area? | The open ocean. This is because most photosynthetic producers cannot live here cause of the low nutrient availability. |
| Contrast the abiotic factors at the high tide with those at the low tide for the organisms in the inter tidal zone in figure 4-7. | High tide: underwater, low temperature, lower oxygen Low tide: exposed to air, more oxygen, drier, higher temperature. |
| Describe the stages of primary succession in land environments, mentioning the role played by grasses, lichens, trees, mosses, and shrubs. | *look at paper* |
| Figure 4-8 shows a decrease in the deer population after 1925. Give one possible reason for this population decline. Explain your answer. | The deer could have ate most of the resources they had, leaving other deer from having a huge decrease in nutrients. Because of this, the deer could have starved to death. |
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