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How does a porifera breathe?
porifera dont have lungs or gills so the oxygen diffuses straight into their cells
Is porifera eukaryotic or prokaryotic?
Yes, Porifera or sponges are eukaryotic because they have a nucleus and organs in their cells, they are unicellular but still very primitif.
How are cells organized into more advanced levels?
Protozoans are the unicellular orgnisms and poriferans are multicellular. Even though group of cells are present in porifera but no grouping (tissues) is formed. It is due to the absence of nerve cells and sensory cells. Later groups like cnidaria to chordata are have great co ordination of cells to form tissue grade and organ system grade because of the presence and the development of nervecells and sensory cells only. so organization cells is improved in the animals by the improvement of nerve cells into nervous tissue and that into nervous system.
What is the difference between nerve cells and nerve?
a nerve tends to refer to a group of nerve cells.
What is a connector nerve?
Connector nerve cells connect the sensory nerve cells with motor nerve cells and allow for decision making.
How does porifera breathe?
First of all, porifera do not breathe: they respire. Oxygen diffuses through the cells
What type of nerve is the optic nerve?
ganglion cells
Do dogs have nerve cells?
Yes, dogs do have nerve cells.
What are the characteristics of porifera?
Porifera are pore bearing animals . Pores include ostia and osculum . they possess choanocytes or collard cells .
What are neural cells?
A nerve cell is the structural and functional unit of a nerve
Does the peripheral nervous system have sensory nerve cells and motor nerve cells?
False
What members of porifera are diploblastic?
Porifera (sponges) have no specialized cells. To be diploblastic animal phyla must have a minimum of two cell layers referred to as ectoderm and endoderm. The absence of these cell types make it impossible for any members of porifera to be diploblastic.
