Biology Unit 1: Ecology
Terms in this set (57)
Bond where electrons are more thrown at each other. (Ions.)
Bond where electrons are shared.
Attraction between different particles.
Attraction between the same particles.
Weak bonds between hydrogen atoms and other atoms from different molecules.
Repelled from water.
Attracted to water.
Highest level of organization; contains everything.
A group of ecosystems that have the same climate and similar communities.
Groups of individuals of the same species in the same area.
Assemblages of different species in the same area.
A collection of all the organisms in a particular place together with the nonliving or abiotic environment.
Organisms that obtain energy directly from sunlight.
Organisms that must acquire energy from other organisms by eating them.
Each step in a food chain or web.
Total amount of living tissue within a given trophic level.
Elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another.
The nutrient whose supply limits productivity.
The protective outer covering of the plant body.
A waxy coating that protects against water loss.
Tissue that transports materials throughout the plant.
Transports water and minerals up from roots.
Transports (food) sugar, water, amino acids, and hormones throughout the plant.
Plant tissue that is neither dermal nor vascular.
Site of photosynthesis.
Pores (on the underside of leaves) that allow for gas exchange.
Regulate the opening and closing of the stoma.
The principal photosynthetic pigment in plants.
The energy molecule of all life.
Energy-capture phase of Photosynthesis; Takes place in thylakoids.
Calvin Cycle; Energy-storage phase; Takes place in Stoma.
Diffusion of water.
The probabilistic process by which molecules go from high concentration to low concentration.
Transport requiring no energy.
Evaporation of water from leaves (to encourage gas exchange through the stoma).
Tendency of water to rise in a thin tube.
Growth responses by plants to environmental stimuli.
Plants with flowers. (Enclosed seeds.)
Plants without flowers. (At least semi-open seeds; eg, ferns.)
Male pollen-producing part of the flower.
Female part of the flower.
The full range of physical and biological conditions in which an organism lives
Competitive Exclusion Principle
No two species can occupy exactly the same niche in exactly the same habitat at exactly the same time.
Two species live closely together.
Both species benefit.
One organism benefits and the other is neither helped nor harmed.
One species lives on or in another and harms it.
Succession that occurs in an area in which no trace of a previous community is present.
Succession that occurs in an area that was only partially destroyed by disturbance.
A special kind of wetland, where the river meets the sea.
The average, year-after-year temperature and precipitation in a region.
The day-to-day condition of Earth's atmosphere at a particular time and place.
The larger a population gets, the faster it grows.
(To be technical, how fast it grows is proportional to its size.)
Where a population's growth slows and then stops, following a period of exponential growth.
Carrying Capacity (K)
Maximum number of individuals that a particular environment can support.
Concentrations of a harmful substance increase in organisms at higher trophic levels.
Layer of ozone in the upper atmosphere that protects the surface from UV radiation.
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