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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Flexor digitorum longus muscle
Answer:
1. beats slower than 60 beats per minute
2. chronic autoimmune disease
3. a branch in the medical field
4. Having the effect of relieving pain and inducing drowsiness, stupor, or
insensibility.
5. obstruction of an artery, typically by a clot of blood or an air bubble.
Explanation:
D because if you have asthma you could still be affected by a other childhood disease a b c is all true data shows prof of a b and c
