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WorksheetsPoriferans BZ110 Sp24
Total questions: 14
Worksheet time: 10mins
Poriferans possess what kind of symmetry?
Bilateral
Pentameral
Radial
Asymetrical
The soft supportive structure in poriferans is called:
(a)
The hard parts of a poriferan support structure are called
(a)
Do sponges reproduce sexually or asexually?
Sexually
Asexually
Both
Most sponges have both sets of gametes, a trait we call being...
(a)
Poriferans eat by...
(a)
What do choanocytes do?
allow the poriferan to change colors to avoid predators
produce spongin
they digest the food that the poriferan gets through filter feeding and then turn it into protein
maintain water flow throughout the body for many bodily functions
The outer layer of "sponge skin" is made of what kind of cell?
peptalactase
pinacocytes
choanocytes
cytosis
The non cellular fluid that is under the "skin" layer
(a)
Archeocytes create:
(a)
What are the spicules of the organisms in class calcarea composed of?
carbon
silica
calcium
iron
What are the spicules of the organisms in class homoscleromorpha composed of?
carbon
silica
calcium
iron
Organisms in class hexactinellida are
glass sponges
bath sponges
hard sponges
dry sponges
Organisms in class demospongiae are
glass sponges
bath sponges
hard sponges
dry sponges
