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Bio Tri B exam 1

Biology final exam trimester B Part 1

QuestionAnswer
On the Galapagos Islands, Charles Darwin observed somewhat similar species to those on the mainland, with traits that suited their particular environments
The number and location of bones of many fossil vertebrates are similar to living vertebrates. Most biologists explain this fact on the basis of: a common ancestor
Biological fitness is the ability of the individual to: contribute to the gene pool of the next generation
Vestigial structures structures that are part of an organism but no longer used, like a tailbone
Darwin's observation of finches supported the hypothesis that finch species originated from a common ancestor
The three-domain system recognizes fundamental differences between two groups of: prokaryotes
A genus is composed of a number of related species
All organisms in the kingdoms Protista, Plantae, Fungi and Animalia are eukaryotes
abiotic not living
biotic living
An organism's niche habitat, food sources, way of life
When one organism captures and feeds on another organism predation
A condition in the environment that can restrict a population's growth limiting factor
Energy flows in one direction
Nutrients recycle
The amount of living tissue at each trophic level in an ecosystem a biomass pyramid
Process by which bacteria convert nitrogen gas in the air to ammonia nitrogen fixation
Repeated movement of water between Earth's surface and the atmosphere water cycle
a snake that eats a frog that has eaten an insect that fed on a plant is a tertiary consumer
Algae at the beginning of a food chain are producers
organisms that obtain nutrients by breaking down wastes and dead organisms decomposers
Nitrogen fixation is carried out by bacteria
Total variety of living things in the biosphere biodiversity
Created by: Freshmensphs