BIOLS232 Flashcards
Animals are multicellular and called…..
Metaxoans
Animals that have no tissues…..
Parazoans
Sponges are parazoans. (true or false)
True
Have specialized tissues…….
Eumetazoans
The “Eumetazoans” are classified according to their…….
Body symmetry
What are the types of symmetry?
Bilateral radial
What type of germ layer do animals with a “radial” l symmetry?
Diploblastic
What type of germ layer do animals with a “bilatera symmetry” have?
Treploblastic
What are the three types of animal cavity?
Celomates - acelomates - pseudo celomates
Celomates animals are classified as……
Protostomes and deuterostomes
The animals are determined to be protostomes or deuterostomes according to the…. ?
First opening of the embryo
If the first opening of the embryo is the mouth we then it is…..?
A protostomes
If the first opening of the embryo is the anus we then it is…..?
Deuterostomes
Higher animals such as chordate and echinodermata are protostomes. (true or false).
False
Lower animals such as mulascas and nematoda are deuterostomes. (true or false)
False
Lower animals such as mulascas and nematoda are deuterostomes. (true or false)
False
Protostomes can be either ecodysozoans or…..?
Lophotrochozoans
Ecodysozoans are devided into two….
Arthropoda and nematoda
(Porifera) Sponges are parazoans. (true or false).
True
Most of sponges are marine and few live in fresh water habitats. (true or false).
True
Sponges are always sesile. (true or false).
True
Porifera embryos are not free swimming. (true or false)
Fales
The body symmetry of sponges can be either………..
Radial or asymmetrical
Level of organization of sponges….?
Cellular level of organization
Sponges are classified into 4 classes……
Calcarea demospongiae hexactinellida
The skeleton and spicules of the class calcarea is composed of……..
Calcium carbonate CaCO4
The skeleton and spicules of the class demospongiae is composed of……..
Spongin fibers and silica spicules
The skeleton and spicules of the class hexactinellida is composed of……..
Silica spicules (with a six rayes)
The fourth class of sponges is…..
Sclerospongiae
The skeleton of sclerospongiae is composed of……..?
Calcium carbonate silica spicules
A thin noncellular gelatinous mlayer in sponges
The mesohyl
Flagellated feeding cells in sponges…….
Choanocytes
A ring of microvilli
Collar cell
Collar secrete mucous to traps the food particles. (true or false)
True
It digests food in sponges
Amoebocytes
The outer cell layer of sponges…..
The Pinacoderm
An incurrent pore of sponges…….
Ostia / ostium
The three types of the inner structure of sponges are……..?
Asconoid syconoid leuconoid
Is the most complex inner structure type of sponges…………..?
Leuconoid
Is the simplest inner structure type of sponges
Asconoid
Have spongocoel……..
Adconoid
Lacking a spongocoel………….?
Leuconoid
A type of sponges that have prosopyle…………?
Syconoid
A type of sponges that filters food mor efficiently………………?
Leuconoid
A type of sponges that filters food mor efficiently………………?
Leuconoid
Most of the sponges are asconoids. (true or false).
False
Asexual reproduction in sponges by……..
Fragmentation budding and gemmules
Sponges have a power of regeneration and re-aggregation. (true or false).
True
Gemmules are non-dormant specialized resistant cells. (true or false)
Falest
Why Spongilla gemmules go dormant?
For asexual reproduction
Leucosolina is in the class………..
Calcarea
What type of canal system does leucosolina have?
Asconoid
Leuconoid lives by attaching to rocks in lower intertidal Zones. (true or false).
True
Leucosolina forms a group of clusters by “fragmenting”. (true or false).
Fales. (by budding)
Grantia us in the class……..
Calcarea
What type of canal system does Grantia have?
Syconoid
Grantia are marine sponges. (true or false).
True
Spongilla is in the class……..
Demospongiae
Spongilla have a skeleton composed of………
Spongin fibers and silica spicules
The commercial spong is in the class……
Demospongiae
What type of Cana system does spongilla and the commercial spong have posses
Leuconoid
