Download Biology Terms: Laws, Osmoregulation, Torpor, Dimorphism, Competition, Displays, Breeding, and more Quizzes Biology in PDF only on Docsity!
Liebig's Law of the Minimum
It states that growth is controlled not by the total amount of resources available, but by the scarcest resource TERM 2
Shelford Law of Tolerance
DEFINITION 2 states that the distribution of a species will be limited by its range of tolerance for local environmental factors TERM 3
OsmoregulationWhy can the gull do this?
DEFINITION 3 General process by which animals control solute concentrations and balance water gain and loss. COntrolled by movement of solutes between internal fluids and external environment. Because water follows solutes by osmosis. Birds can do it because nasal salt glands. TERM 4
Torpor
DEFINITION 4 How hummingbirds stay warm. (lower heart rate and body temp)Daily torpor, sometimes called temporary hibernation is a state of decreased physiological activity in an animal, usually characterized by a reduced body temperature and rate of metabolism. TERM 5
sexual dimorphism
DEFINITION 5 Sexual dimorphism is the systematic difference in form between individuals of different sex in the same species.
intrasexual
competition
Males compete for the females. TERM 7
agonistic displays
DEFINITION 7 combative or territorial behavior of an animal that feels threatened by or intends to threaten another animal, usually of the same species. Appear bigger or better to gain access to mates. Horns. TERM 8
cooperative breeding
DEFINITION 8 a social system in which individuals help care for young that are not their own, at the expense of their own reproduction. TERM 9
bioaccumulation
DEFINITION 9 Bioaccumulation refers to the accumulation of substances, such as pesticides, or other organic chemicals in an organism. TERM 10
Rachel Carson
DEFINITION 10 was an American marine biologist and conservationist whose writings are credited with advancing the global environmental movement. Banned DDT.
learned behavior
actions of a system or organism, usually in relation to its environment, which includes the other systems or organisms around as well as the physical environment. TERM 17
Organismal/species ecology
DEFINITION 17 Concerned with how an organisms structure, physiology, and for animals behavior meet the challenges posted by it's environment TERM 18
Population ecology
DEFINITION 18 analyzes factors that effect population size and how and why it changes through time TERM 19
Community ecology
DEFINITION 19 examines how interactions between species such as predation and competition effect community structure and organization TERM 20
Ecosystem ecology
DEFINITION 20 emphasizes energy flow and chemical cycling between organisms and the environment
Landscape ecology
focuses on the factors controlling exchanges of energy materials and organisms across multiple ecosystems TERM 22
global ecology
DEFINITION 22 examines how the regional exchange of energy and materials influences the functioning and distribution of organisms across the biosphere TERM 23
optimal foraging
DEFINITION 23 states that organisms forage in such a way as to maximize their net energy intake per unit time. Crow and whelk TERM 24
sign stimulus
DEFINITION 24 triggers the external cue. instinctive response to the stimulus. Baby bird opens mouth when sees mom. TERM 25
Fixed action pattern
DEFINITION 25 sequence of unlearned acts that is essentially unchangeable and once initiated usually carried to completion
dispersion
pattern of spacing among individuals within the boundaries of the population. Clumped, uniform, or random TERM 32
type 1 survivorship curve
DEFINITION 32 Flat in beginning: low death rate in early and middle age, middle age drops steeply as death rate increases among older age groupsFew offspring with much parental careMany large mammals TERM 33
type 2 survivorship curve
DEFINITION 33 constant death rate over life of organismssome rodents, lizards, annual plants
