________ refers to the way plants respond to sunlight- for example, bending toward light.
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Habituation
________ is another form of learning.
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Endotherms
________ are animals that generate their own body heat through metabolism.
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Toxins
________ in an ecosystem are concentrated and more dangerous for animals further up the pyramid.
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Plants
________ flower in response to changes in the amount of daylight and darkness they receive.
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Ectotherms
________ lack an internal mechanism to control body temperature.
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Commensalism
________- in which one organism lives off another with no harm to the host organism (for example, the remora)
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Exponential growth
________ occurs very quickly, resulting in a J- shaped curve.
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Thigmotropism
________ refers to the way plants respond to touch.
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food chain
In a(n) ________, only about 10 percent of energy is transferred from one level to the next- this is the 10 % rule.
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Biosphere
________: The entire part of the Earth where living things exist.
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Parasitism
________- in which the organism actually harms its host.
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Territoriality
________ is a common behavior when food and nesting sites are in short supply.
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Instinct
________ is an inborn, unlearned behavior.
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Lichens
________ are considered pioneer organisms.
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chemical signals
Pheromones, are ________ between members of the same species that stimulate olfactory receptors and ultimately affect behavior.
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Dominance hierarchies
________ (pecking orders) occur when members in a group have established which members are the most dominant.
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Mutualism
________- in which both organisms win (for example, the lichen components)
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Net productivity
________ measures organic materials that are left over after photosynthetic organisms have taken care of their own cellular energy needs.
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tropism
A(n) ________ is a turning in response to a stimulus.
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behavior brought
Learning refers to a change in a(n) ________ about by an experience.
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maximum number of individuals
Carrying capacity- the ________ of a species that a habitat can support.
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energy flow
The ________, biomass, and numbers of members within an ecosystem can be represented in an ecological pyramid.
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Altruistic behavior
________ is defined as unselfish behavior that benefits another organism in the group at the individuals expense because it advances the genes of the group.
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Population growth
________ can be represented as the number of births minus the number of deaths divided by the size of the population.
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Exponential growth
________ occurs when a population is in an ideal environment.
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Biosphere
The entire part of the Earth where living things exist
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Ecosystem
The interaction of living and nonliving things
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r = (births
deaths)/N (r is the reproductive rate, and N is the population size.)
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