relates to an outward form or physical attribute of the animal which allows it to interact favorably with its environment
Most aquatic animals need some _______ to stay afloat.
Maintaining neutral _______ in open water environments releases organisms from the structural constraints of terrestrial environments.
Zygodactyl Toe Structure
toes arranged in pairs
sensing heat and vibration
a chemical produced that transmits a message to other members of the same species
used to lay down territory boundaries
social insects (ants) lay down trails to retrace steps to food source and allow others to follow the same trail
released when attacked to alert others to swarm intruder
indicate availability of female for breeding
internal processes ( hibernation, precocial young, egg laying)
the maintenance of a relatively constant internal environment in a varying external environment
All organisms must maintain ______ _______ and offset water losses by the uptake of water from the external environment.
Aquatic organisms living in freshwater are _________, they have a higher salt concentration in their bodies than does the surrounding water.
Marine fish are _______, they have a lower salt concentration in their bodies than the surrounding water.
internal heat production independent of external temperature (homeothermy)
require heat primarily from external environment (poikilothermy)
employ both endothermy and ectothermy, depending on environmental situations and metabolic needs.
Have an upper and lower thermal limit that they can tolerate. They can maintain a relative constant daytime body temperature by behavioral means.
maintain a high level of energy through aerobic respiration, and can sustain high levels of physical activity for long periods
regulate exchange of heat between the body and environment by insulation
takes place when the body temperature falls below the freezing point without actually freezing
counter current heat exchange
can conserve heat in a cold environment or can cool vital parts of the body under heat stress
an inactive state
a long, seasonal torpor, characterized by cessation of activity
occurs when it is very hot or dry
refers to animals that show regular pattern that occurs about every 24 hrs
relative length of day and night; stimulates the release of hormones from the pituitary gland, which in turn stimulates the enlargement of the sex organs in males and females
laying a replacement clutch after an earlier nest is destroyed