Chapter 3 Flashcards
(18 cards)
Why are the porifera referred to as plant
Because they are sessile
Poriferas are known as
Parazoan
The main pore of a sponge is called
Osculum
The body cavity of sponges is called
Spongocels
The major pore of sponge is called
Osculum
The tightly fitted polygonal cells in sponges is called
Pinococytes
Foods such as glycogen and lipo protein is stored in the
Thesocyte
Totipotent cells of sponges are
Archaeocytes
Water enters the sponges through
Ostia or pores
Which type of symmetry does poriferas exhibit
Radially symmetrical
Arrangement or state the complexity of sponge based on canal system
Asconoid, syconoid, leuconoid
State the complexity of sponges according to their skeletal system
Calcarea, hexactinellida, demospongea
Which part plays important for role in feeding and food storage in hydra
Middle layer- amoebocytes
What is the level of organization of sponges
Cell
Are sponges monoecious or diecious
Most sponges are monoecious
When does gemmules occur in sponges
During harsh or unfavorable condition
Sponges are classified into how many based on diversity
2-
Based on canal system and. Based on skeletal material
The most complex canal system is
Leuconoid
