Uark POB Shadwick Exam 4
CORRECT 100%
A number of populations of different species interacting with one another in a natural
environment, such as a rotten log, is called - ANSWERA community
In a species with a type 3 survivorship curve - ANSWERmany individuals die early in life
When the number of births exceeds the number of death, this results in -
ANSWERpopulation growth
A population under exponential growth would be graphed with _________-shaped
curves - ANSWERJ
Which is NOT a density-dependent factor?
a. shelter or nest space
b. disease
c. food supply
d. weather - ANSWERweather
A form of symbiosis in which one participant benefits and the other is not benefited nor
harmed is - ANSWERcommensalism
Interaction between two species as both attempt to us the same environment resources
is - ANSWERcompetition
The carrying capacity of the environment for a species in determined by - ANSWERthe
limited productivity of the environment resistance to the potential of the organism
Primary succession takes much longer than secondary succession because it involves -
ANSWERtime for weathering of rock and development of the soil horizons.
Lack an internal skeleton - ANSWERInvertebrates
Which involved first invertebrates or vertebrates? - ANSWERinvertebrates
Animals that have an endoskeleton - ANSWERvertebrates
Asymmetrical - ANSWERAnimals have no particular symmetry
Ex of asymmetrical - ANSWERSponges
Radical symmetry - ANSWERAnimal is organized circularly, similar to a wheel, so that
no matter how the animal is slices, mirror images are obtained
, Bilateral symmetry - ANSWERThe 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? - ANSWERAble to reach out in
all directions from one center
Sessile? - ANSWERPermanently attaches to a substrate, or free floating.
example of a radially symmetrical animal that may be sessile - ANSWERjellyfish
Proifera: Sponges - ANSWER-asymmetrical
-filter feeders
-skeleton of spicules and spongin
Cnidarian facts - ANSWER-radial symmetry
-true tissues
Cnidarian 2 basic body forms - ANSWERPolyp and medusa
Polyp - ANSWERmouth and tentacles directed upward.
Ex: sea anemones and coral
Medusa - ANSWERbell-shaped mouth directed downward
ex: jellyfish
Trochozoans: Flatworms - ANSWER-bilateral
-protostomes
-incomplete digestive tract
-eyespots
Molluscs - ANSWER-Bilateral
-protostomes
-trochophore
3 distinct parts of Molluscs - ANSWER1. visceral mass
2. foot
3. mantle
Example of a gastropod - ANSWERConch shells, snails
cephalopods include - ANSWERsquid, octopi, nautilus
Bivalves include - ANSWERclams, oysters, mussels
annelids - ANSWER-bilateral
CORRECT 100%
A number of populations of different species interacting with one another in a natural
environment, such as a rotten log, is called - ANSWERA community
In a species with a type 3 survivorship curve - ANSWERmany individuals die early in life
When the number of births exceeds the number of death, this results in -
ANSWERpopulation growth
A population under exponential growth would be graphed with _________-shaped
curves - ANSWERJ
Which is NOT a density-dependent factor?
a. shelter or nest space
b. disease
c. food supply
d. weather - ANSWERweather
A form of symbiosis in which one participant benefits and the other is not benefited nor
harmed is - ANSWERcommensalism
Interaction between two species as both attempt to us the same environment resources
is - ANSWERcompetition
The carrying capacity of the environment for a species in determined by - ANSWERthe
limited productivity of the environment resistance to the potential of the organism
Primary succession takes much longer than secondary succession because it involves -
ANSWERtime for weathering of rock and development of the soil horizons.
Lack an internal skeleton - ANSWERInvertebrates
Which involved first invertebrates or vertebrates? - ANSWERinvertebrates
Animals that have an endoskeleton - ANSWERvertebrates
Asymmetrical - ANSWERAnimals have no particular symmetry
Ex of asymmetrical - ANSWERSponges
Radical symmetry - ANSWERAnimal is organized circularly, similar to a wheel, so that
no matter how the animal is slices, mirror images are obtained
, Bilateral symmetry - ANSWERThe 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? - ANSWERAble to reach out in
all directions from one center
Sessile? - ANSWERPermanently attaches to a substrate, or free floating.
example of a radially symmetrical animal that may be sessile - ANSWERjellyfish
Proifera: Sponges - ANSWER-asymmetrical
-filter feeders
-skeleton of spicules and spongin
Cnidarian facts - ANSWER-radial symmetry
-true tissues
Cnidarian 2 basic body forms - ANSWERPolyp and medusa
Polyp - ANSWERmouth and tentacles directed upward.
Ex: sea anemones and coral
Medusa - ANSWERbell-shaped mouth directed downward
ex: jellyfish
Trochozoans: Flatworms - ANSWER-bilateral
-protostomes
-incomplete digestive tract
-eyespots
Molluscs - ANSWER-Bilateral
-protostomes
-trochophore
3 distinct parts of Molluscs - ANSWER1. visceral mass
2. foot
3. mantle
Example of a gastropod - ANSWERConch shells, snails
cephalopods include - ANSWERsquid, octopi, nautilus
Bivalves include - ANSWERclams, oysters, mussels
annelids - ANSWER-bilateral
