Specific excretory organs are absent in unicellular organisms belonging to the<u> phylum Porifera.</u>
The organisms of the phylum Porifera are classified under the kingdom Animalia and they lack specific organs in their bodies.
The word "Porifera" refers to pore-bearing organisms.
These animals have loosely organized cells and are found in freshwater marine ecosystems.
On their body, a large number of pores - Ostia - are present which perform various functions such as excretion.
However, respiratory gases and waste materials are exchanged through a diffusion process.
Moreover, in them, reproduction takes place through fragmentation and budding.
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Answer: nothing
Explanation:
It is the patients decision or if they are under 18, the parents decision. The health care provider can give suggestions if the patient will allow them but otherwise it is their job to listen to what the patient wants.
Answer:
I'd say C would be the answer
Answer:
True !
Explanation:
Carcinoma is a malginancy that begins in the skin or in tissues that line or cover internal organs. They are a common type of malignant tumor.
