Uark POB Shadwick Exam 4
A number of populations of different species interacting with one another in a natural
environment, such as a rotten log, is called - -A community
-In a species with a type 3 survivorship curve - -many individuals die early in life
-When the number of births exceeds the number of death, this results in - -population
growth
-A population under exponential growth would be graphed with _________-shaped curves - -
J
-Which is NOT a density-dependent factor?
a. shelter or nest space
b. disease
c. food supply
d. weather - -weather
-A form of symbiosis in which one participant benefits and the other is not benefited nor
harmed is - -commensalism
-Interaction between two species as both attempt to us the same environment resources is
- -competition
-The carrying capacity of the environment for a species in determined by - -the limited
productivity of the environment resistance to the potential of the organism
-Primary succession takes much longer than secondary succession because it involves - -
time for weathering of rock and development of the soil horizons.
-Lack an internal skeleton - -Invertebrates
-Which involved first invertebrates or vertebrates? - -invertebrates
-Animals that have an endoskeleton - -vertebrates
-Asymmetrical - -Animals have no particular symmetry
-Ex of asymmetrical - -Sponges
-Radical symmetry - -Animal is organized circularly, similar to a wheel, so that no matter
how the animal is slices, mirror images are obtained
, -Bilateral symmetry - -The animal has definite right and left halves; only a longitudinal
cute down the center of the animal will produce mirror images
-What advantage do radially symmetrical animals have? - -Able to reach out in all
directions from one center
-Sessile? - -Permanently attaches to a substrate, or free floating.
-example of a radially symmetrical animal that may be sessile - -jellyfish
-What advantage do bilaterally symmetrical animals have? - -Tend to be more active, with
movement directed toward an anterior end
-Cephalization? - -Localization of a brain and specialized sensory organs at the anterior
end.
-Bilateral symmetry is accompanied by what? - -Cephalization
-Poriferans - -sponges
-Cnidarians include? - -anemones, corals, and jellyfish
-Molluscs include - -Gastropods, cephalopods, bivalves
-ex of annelids - -earthworms
-endysozoa - -anthropoids including crustaceans, insects and arachnids
-Echinoderms - -sea stars
-Protostomes - -blastopore becomes mouth
-Deuterostomes - -blastopore becomes anus
-Proifera: Sponges - --asymmetrical
-filter feeders
-skeleton of spicules and spongin
-Cnidarian facts - --radial symmetry
-true tissues
-Cnidarian 2 basic body forms - -Polyp and medusa
-Polyp - -mouth and tentacles directed upward.
Ex: sea anemones and coral
A number of populations of different species interacting with one another in a natural
environment, such as a rotten log, is called - -A community
-In a species with a type 3 survivorship curve - -many individuals die early in life
-When the number of births exceeds the number of death, this results in - -population
growth
-A population under exponential growth would be graphed with _________-shaped curves - -
J
-Which is NOT a density-dependent factor?
a. shelter or nest space
b. disease
c. food supply
d. weather - -weather
-A form of symbiosis in which one participant benefits and the other is not benefited nor
harmed is - -commensalism
-Interaction between two species as both attempt to us the same environment resources is
- -competition
-The carrying capacity of the environment for a species in determined by - -the limited
productivity of the environment resistance to the potential of the organism
-Primary succession takes much longer than secondary succession because it involves - -
time for weathering of rock and development of the soil horizons.
-Lack an internal skeleton - -Invertebrates
-Which involved first invertebrates or vertebrates? - -invertebrates
-Animals that have an endoskeleton - -vertebrates
-Asymmetrical - -Animals have no particular symmetry
-Ex of asymmetrical - -Sponges
-Radical symmetry - -Animal is organized circularly, similar to a wheel, so that no matter
how the animal is slices, mirror images are obtained
, -Bilateral symmetry - -The animal has definite right and left halves; only a longitudinal
cute down the center of the animal will produce mirror images
-What advantage do radially symmetrical animals have? - -Able to reach out in all
directions from one center
-Sessile? - -Permanently attaches to a substrate, or free floating.
-example of a radially symmetrical animal that may be sessile - -jellyfish
-What advantage do bilaterally symmetrical animals have? - -Tend to be more active, with
movement directed toward an anterior end
-Cephalization? - -Localization of a brain and specialized sensory organs at the anterior
end.
-Bilateral symmetry is accompanied by what? - -Cephalization
-Poriferans - -sponges
-Cnidarians include? - -anemones, corals, and jellyfish
-Molluscs include - -Gastropods, cephalopods, bivalves
-ex of annelids - -earthworms
-endysozoa - -anthropoids including crustaceans, insects and arachnids
-Echinoderms - -sea stars
-Protostomes - -blastopore becomes mouth
-Deuterostomes - -blastopore becomes anus
-Proifera: Sponges - --asymmetrical
-filter feeders
-skeleton of spicules and spongin
-Cnidarian facts - --radial symmetry
-true tissues
-Cnidarian 2 basic body forms - -Polyp and medusa
-Polyp - -mouth and tentacles directed upward.
Ex: sea anemones and coral
