Term
| What are characteristics of animals? |
|
Definition
-Multicellular eukaryotes
-Specialization of cells
-Heterotrophs
-Most are capable of locomotion at some time in their life cycle
-Cephalization
-Sexual reproduction |
|
|
Term
|
Definition
| multicellur eukaryotic autotrophs (produces) |
|
|
Term
|
Definition
|
|
Term
|
Definition
| that part which goes first |
|
|
Term
|
Definition
|
|
Term
|
Definition
| The part which follows (tail) |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Away from mid-line (to the side) |
|
|
Term
|
Definition
|
|
Term
|
Definition
| Radially symmetrical- sessile or free floating like jellyfish |
|
|
Term
|
Definition
| Section resulting from a plain that divides the body in to left and right. |
|
|
Term
|
Definition
| Section resulting from a plane that divides the body into dorsal and ventral portions. |
|
|
Term
|
Definition
| Section resulting from a plane that divides body or structure into top and bottom |
|
|
Term
|
Definition
| Great majority of them are marine 95% |
|
|
Term
|
Definition
| Are most visible animals 5% |
|
|
Term
|
Definition
Sponges; mainly marine-feed on plankton
Body plan- sac with holes
Some are radially symmetrical but most are assymetrical (irregular shape)
Adult is sessile- larval stage is flagellated and able to swim about
Do not from definite tissues ( lack true tissue)
Water enters through pores --->spongocoel--->osculum(used only as exit)
Water is kept circulating by collar cells or choancytes |
|
|
Term
| 3 kinds of cells in Porifera |
|
Definition
-Choanocytes-(collar cells)- have a sticky collar of microvilli that surrounds a flagella (eat bacteria, dinoflagellates or plankton)
-amoebocytes- between collar cells and epidermal cells
-Epidermal cells on sponge exterior and is capable of contraction |
|
|
Term
|
Definition
Mostly martine
-all have cnidocytes ( stinging cells)
-inside cnidocytes are organelles called nematocytes ( thread capsules)
-when cnidocile -a trigger is touched or stimulated by chemicals, the nematocyte is released
-radially symmetrical
-mouth/anus with tentacles surrounding it; leads to GVC, only one opening leads into gvc
-definite tissue- epidermis and gastrodermis
-nerve net
-2 body shapes: polyl- sessile
Medusa- jelly fish form: free swimming |
|
|
Term
|
Definition
-hydrozoa- most members have both polyp and medusa
a. Hydra- polyp only reproduce by buds
b. Physalia- both polyp and medusa
c. Obelia- alternate between sexual and asexual generations
2. Scyphozoa- marine jellyfish, mostly medusa- polyp restricted to larval stage in coastal waters jelly fish in open ocean lack the polyp stage
3. Anthozoa- sea anemones, corals (polyp prominent; no Medusa) many derive nourishment from photosynthetic endosymbiotic dinoflagellates |
|
|
