Intro / Body Plans Flashcards
___ population controls the ___ population
Predator / Prey
interchangable
Extended intimate relationship between individuals of different species
symbiosis
One symbiont benefits and the other is harmed
Parasitism
One symbiont is benefited and one is unaffected
Commensalism
Both symbionts benefit
Mutualism
3 types of symbiosis
Parasitism
Commensalism
Mutualism
3 Types of interaction avoidance
Camouflage
Aposematic Coloration
Mimicry
- Dont get recognized or noticed
- Cryptic Coloration: adapt a pattern to blend in
- Counter shading: backside is dark and under is light.
Camoflage
Adapt a pattern to blend in
Cryptic Coloration
Backside is dark and under is light
Countershading
Periodic change in the assemblage of species in a community.
Community succession
Pioneer Community
Generalists
No specific resource requirement
Change the environment
Gives rise to intermediate community
Intermediate Community
Fewer generalists
More specialists
Changed the environment
Gives rise to another intermediate community
Intermediate community -> Intermediate community -> Intermediate community -> Intermediate community ->
Eventually gives rise to ____
Climax Community
Climax Community
Mostly specialists
does NOT change the environment
Does a climax community change the environment?
No
Random arrangement of body parts
Not designed for locomotion
Asymmetry
Arranges body parts around a central axis
Locomotion is poor in all directions
Oral vs. Aboral surfaces
Radial Symmetry
Oral Vs Aboral
Mouth side and non-mouth side
Divided into somewhat equal left and right sides
Designed to move forward
Cephalization
Bilateral Symmetry
Cephalization
collection of sensory neurons at front of animal
Middle plane
Mid-sagittal plane
Frontal plane divides…
Dorsal and ventral
Top of frontal plane
Dorsal
Bottom of frontal plane
Ventral
Transverse plane divides…
Anterior and posterior
Medial means
closer to midsagittal line
Lateral means
further from midsagittal line
Distal means
farther from the connection point
Proximal means
closer to the connection point
Distal and proximal only used on
Appendages
Epidermis
Ectoderm
Gastrodermis
Endoderm
Non-living layer between epidermis and gastrodermis
Mesoglea
Acoelomate
No space between gut and body wall
Pseudocoelomate
Has a space between gut and body wall that is not mesodermally-derived
Coelomate
Space between gut and body wall
Advantages of a coelom
Additional space to store a meal,water, extra calories, Hydrostatic skeleton Extra space for contraction of muscles (expel gametes) Increase surface area of internal organs
^^^ all adds to increase in body size
