Abiotic Factors - Physical Factors Flashcards
photoperiodism
organisms’ response to light
light intensity
the measure (the strength or amount of light) of the wavelength-weighted power emitted by a light source
nocturnal
to occur or be active during the night
diurnal
active chiefly in the daytime
hibernation
the state of greatly reduced metabolic activity and lowered body temperature adopted by certain mammals as an adaptation to adverse winter conditions
aestivation
the state of animal dormancy taking place in the summer
counter-current blood flow
the blood flow through the gills in the opposite direction as the water flows over the gills
migration
the seasonal movement of a complete population of animals from one area to another
annual (plant)
a plant that completes its life cycle, from germination to the production of seeds within one growing season
deciduous (plant)
a plant that sheds their leaves off at the end of every growing season
evergreen (plant)
a plant which has foliage that remains green and functional through more than one growing season
bulbs (plant)
a modified stem that is the resting stage of certain seed plants
corms
a short, vertical, swollen underground stem of a plant that serves as a storage organ to enable the plant to survive winter or other adverse conditions such as drought
tubers
are specialized storage stem of certain seed plants
rhizomes
are horizontal underground plant stems capable of producing the shoot and root systems of a new plant
