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Terms in this set (61)
Tinbergens 4 Questions
Causation, Ontogeny, Survival Value (function), Evolution
process causation and ontogeny (development)
considered to be proximate mechanisms
survival value (function) and evolution
to understand the underlying internal factors (e.g. neural, genetic, hormonal) for a behavior.
a behavior is a ______ value
survival . Important for fitness.
how does the cricket generate its characteristic "song"? And how do others crickets ( as well as other animals, including humans) perceive this signal?
how does chirping behavior arise throughout the development of the cricket? Is the cricket's song fully formed when it appears?
why does the cricket sing in the first place?
survival value, function
when we compare the songs of different crickets species, what differences if any are there ?
response to variations in the radiant energy received by a photorecptor
response to radiant thermal energy
response to kinetic energy
response to chemicals
directed turning or bending movement of sessile organisms toward or away from an external stimulus such as light heat or gravity
a movement in response to a stimulus that is not oriented with respect to the source of stimulation.
the directed movement of a free-moving organism or cell toward(positive) or away from (negative) an external stimulus.
animals move toward a goal that they do not perceive with their senses.
is a regularly patterned, fairly loud signal that attracts females.
when male attempts to mate with a female.
song produced during or after combat with another cricket
attracted to the signal and will approach it in a directed orienting response toward the source of the song
where are crickets ears
on their hind legs
how do male and female gametes released from sea urchins
what do you inject an individual with to collect gametes
early stages of sea urchin development
such as gastrula and blastula
experimental fertilization is readily accomplished in sea urchins by
mixing viable gametes and easy to detect via the presence of fertilization membrane
how do we know if gametes are female from an urchin
orange in color. (eggs collected in seawater)
how do you know when a egg is fertilized
has a fertilization membrane
When division looks like 4 seperate circles, with fertilization membrane
into what organ system will the ectoderm develop during gasturlation
nervous system and epidermis
where does the stained and dissected chick embryo with filter paper go
in the animal carcass disposal container
liquid egg white goes
in the animal carcass disposal
what do you put on atop discarded egg material to absorb moisture and ordors
scoop of kitty liter
rinse petri dishes (embryo)
with cold water
the mesoderm gives rise to
segmented body muscels, vertevral column, and heart and blood vessels
Honey, jams, jellies, favored sugar rubs, and other sweet preserves are typically free of bacterial contamination because bacteria will...
shrivel and be killed ( due to plasmolysis) in the hypertonic environment of these materials
the penetration of the sperm into the cytoplasm of the egg and the union of the two haploid sperm and egg nuclei to form the nucleus of the diploid zygote
the division of the zygote into many cells by rapid successions
cleavage is usually said to end with the formation of the blastula. Each cell formed from the cleavage of the zygote is termed a blastomere
the formation of a hollow ball of cells called a blastula. The blastula contains a fluid-filled inner cavity called the blastocel
the movement of cells from the surface of the blastula to the interior at a site called the blastopore. The cell movements generate the three primary germ layers
what are the three primary germ layers
ectoderm, mesoderm, endoderm
when mesoderm layer is fully established,
gastrulation is complete
mesodermal tissue will give rise to
notochors and series of somites
ectodermal tissue what is formed
prosencephalon, mesencephalon, and rhombencephalon
all three come to form brain
at/toward the head/front end
at/toward the tail end
at/toward the back/vertebral column
at/toward the belly or front
at/toward the head
at/toward the tail
toward the midline
away from the attachment point to the body
toward the attachment point to the body
away from attachment point to the body
above a point-of-reference body part
below a point of reference body part
is made parallel to the long body axis of the body and divides the body into right and left halves
is made along the longitudal plane that divides the body into ventral and dorsal regions
made perpendicular to the longitudinal or frontal plane
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