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Pre-AP Bio: Exam 13

Ecosystems & Biological Communities

QuestionAnswer
What is the process of species replacement? Sucession.
What two trophic levels does a secondary consumer feed at? Producers and primary consumers.
An animal that eats other animals is classified as a _____. carnivore
A food web shows how _____ moves through an ecosystem. energy
Photosynthetic algae are classified as _____. producers
How much energy is available for the tertiary consumer compared to the secondary consumer? 10%.
The first level of an energy pyramid is composed of _____. producers
The width of of each trophic level in an energy pyramid represents the _____. amount of energy it contains
The number of trophic levels in an energy pyramid is limited by the _____ lost at each level. energy
The energy that is not passed on to the next trophic level is transferred into _____. heat
An _____ includes energy, soil, weather, water, and a community of organisms. ecosystem
A _____ includes where a species lives. habitat
Soil, climate, water, and sunshine are all examples of _____ factors. abiotic
Competition between organisms for food, predation, and pathogens are all examples of _____ factors. biotic
Precipitation and evaporation are important componets of the _____. water cycle
Combustion and respiration are two ways of releasing _____ in an ecosystem. carbon
_____ is how carbon is removed from the atmosphere. Photosynthesis
_____ is the study of the interactions of living organisms of living organisms with one another and their physical enviornment. Ecology
_____ are secondary consumers that help interconnect all the trophic levels. Detrivores
The cycling of ammonia and nitrates are important steps in the _____ cycle. nitrogen
The biome that makes up most of the central U.S. is _____. temperate grassland
Over millions of years, plants and their pollinators have _____. coevolved
Permafrost restricting root development could be a major reason why few trees exist in the _____. tundra
Generally the closer an ecosystem is to the _____, the greater the _____, the longer the growing season, and the warmer the temperature is. equator; diversity
Thorns, tough leaves, and chemical defenses are ways plants defend themselves against _____. predators
_____ is the process by which species evolve in response to other living members of the ecosystem. Coevolution
_____ is a relationship between two organisms where one organism benefits while the other suffers from the relationship. Parasitism
_____ is a relationship between two organisms where both organisms benefit from the relationship. Mutualism
_____ is a relationship between two organisms where one organism benefits while the other neither benefits nor suffers from the relationship. Commensalism
What are the two main factors that determine an ecosystem? Temperature and moisture.
A _____ is a set of resources a population is theoretically capable of using under ideal circumstanses. fundamental niche
A _____ is a set of resources a population actually uses. realized niche
This biome is found north and south of the Equator. Plant life consists mainly of grasses, shrubs, and scattered trees. The animal life consists of giraffes, lions, and many other species. The biome has seasonal droughts and high temperature fluctuation. Savanna.
I recieve very little amount of rain, and water is scarce since most of it is frozen. My vegetation consists mainly of mosses and small grasses. The majority of my underlying ground is frozen due to the extreme cold temperatures I endure. Tundra.
I contain half of the Earth's terrestial species. I receive plentiful rainfall all year. The temperature is warm to hot all year long. All my nutrients are stored in my beautiful plants, not in the soil. Tropical rainforest.
An organism's _____ includes what it eats and where it lives. niche
What becomes of energy in organisms as it is transferred up through a food chain? As energy passes through each trophic level, only 10% of it is transfered. The rest of the 90% is converted into heat. All organisms require energy however that energy is decreased each time it is passed through the trophic levels.
Created by: steig
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