Bio Exam: Ecology

What do ecologists call the place that an organism lives... {Ans: A Habitat}Orchid epiphytes grow on trees in the rain forest but have no significant effect on the trees. This type of symbiosis, where one species benefits and the other is neither helped not harmed, is called... {Ans: Commensalism}If you could collect ALL Of the organisms at each trophic level represented in the ocean food chain below and weigh them, which trophic level would weigh the least and have the fewest organisms? Remember, you will be weighing all of the sharks, all of the fish, and all of the algae... {Ans: The tertiary consumers (sharks)}Which term describes the interactions among the populations in a community and the community's physical/ abiotic surroundings? {Ans: Ecosystem}Which biome ha permafrost, low nutrient soil, slow decay, and no trees? {Ans: tundra}This biome has soil that is nutrient poor. It's trees form a canopy that prevents understory plant growth. It also has the highest biodiversity of all of the terrestrial biomes and very high precipitation. {Ans: tropical rainforest}A collection of populations of different species that interact is called a... {Ans: Community}The recycling of matter in ecosystems requires the breakdown