Trashketball Exam #2. 1. A biotic or an abiotic resource in the environment that causes population size to decrease is a… A. Carrying capacity. B. Limiting.

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Presentation transcript:

Trashketball Exam #2

1. A biotic or an abiotic resource in the environment that causes population size to decrease is a… A. Carrying capacity. B. Limiting nutrient. C. Limiting factor. D. Growth factor.

2. All of the members of a particular species that live in one area are called a (an)… A. Biome B. Population C. Community D. Ecosystem

3. Which of the following descriptions about the organization of an ecosystem is correct? A. Communities make up species, which make up populations. B. Populations make up species, which make up communities. C. Species make up communities, which make up populations. D. Species make up populations, which make up communities.

4. What is the original source of almost all the energy in most ecosystems? A. Carbohydrates B. Sunlight C. Water D. Carbon

5. Which of the following statements is correct? A. A community is the place where several different species live. B. Heterotrophs are organisms that feed off organic matter. C. Decomposer bacteria are detritivores. D. A habitat is a community and its abiotic environment.

6. For an environmental factor to be considered biotic, it must be… A. Living B. Photosynthetic C. A decomposer D. Organic

7. Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism’s life processes, and the rest is… A. Used in reproduction B. Stored as body tissue C. Stored as fat D. Eliminated as heat

8. The greenhouse effect is… A. The result of an excess of carbon dioxide in the atmosphere. B. A natural phenomenon that maintains Earth’s temperature range. C. The result of the differences in the angle of the sun’s rays. D. An unnatural phenomenon that causes heat energy to be radiated back into the atmosphere.

` 9. The symbiotic relationship between a flower and the insect that feeds on its nectar is an example of… A. Mutualism because the flower provides the insect with food, and the insect pollinates the flower. B. Parasitism because the insect lives off the nectar from the flower. C. Commensalism because the insect does not harm the flower and the flower does not benefit from the relationship. D. Predation because the insect feeds on the flower.

10. The movements of energy and nutrients through living systems are different because A. Energy flows in one direction and nutrients recycle B. Energy is limited in the biosphere and nutrients are always available C. Nutrients flow in one direction and energy recycles D. Energy forms chemical compounds and nutrients are lost as heat