Midterm

near the front

near the back

upper side or back of an animal

underside of an animal (abdominal)

near the median plane of the body/organ

region furthest from the median plane

away from the center of the body or point of attachment

near center of the body or point of attachment

plane dividing the body into left and right

coming from the same ancestors

a community that reproduces together

20% of all animals alive right now 1% of all animals ever

consists of populations that share the same traits and can interbreed (usually)

-all functions occur in one cell (single celled organisms) -have organelles for different functions

-limits effectiveness of cell -cells cannot work together

-cells are specialized -individual cells cannot live on its own -work is divided among cells -no tissue

-specialized cells grouped together as a unit to preform a function (tissue) -preform one common function

-tissue is grouped as a unit for a common function (organ)

-organs working together for a common function -highest level of organization (specialized organs)

-usually single cell -beach ball shape -any plane through the body with create symmetry -good for floating and rolling

-circular shape -“jellyfish pizza” -more than 2 planes through center create symmetry

-special form of radial symmetry -only 2 planes produce mirrored halves (oval)

-right and left mirror halves along the sagittal plane - great for forward movement -head and tail region