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:
Renal column
Explanation:
The renal column runs between the renal pyramids and is an extension of the renal cortex.
Answer:
Renal Artery
Explanation:
It arises off the left interior side of the abdominal aorta.
I believe keratinocytes, so A.
Answer: instead of just doing companion animals, Sue could also make it a place where stray animals can go
Explanation: