Answer:
Most cells within planarians tend to be very close to their gastrovascular cavity, in addition to their external environments. Also, planarians have the ability for oxygen and carbon dioxide to diffuse through the cells on their body walls: this makes it unnecessary for these varieties of flatworms to need a dedicated bodily system.
I think the deficiency of dedicated respiratory and circulatory systems in Planarians does not cause a problem because none of their cells are far removed from the gastrovascular cavity or from the external environment. Planarians are free-living flatworms and form the class Turbellarians in the Phylum Platyhelminthes. Flatworms have three tissue layers, that is the ectoderm, mesoderm, and endoderm.
hope this helps!!!!!....
Explanation:
Answer:
Explanation:
He contributed to the discovery of cells while looking at a thin slice of cork. He then thought that cells only exist in plants and fungi. In 1665, he published Micrographia.
Answer:
many system and many functions of body systems.
Like- nose ,and functions is they were smell in any things.
second - ear, functions is they were any sound to feel together.
third-tongue , functions is they were any taste feel in what can I do in salt and bitter.
AND MANY OTHER FUNCTIONS TOGETHER.
I HOPE LIKE THIS ANSWER
<span>Fatty Acid- consists of a straight chain of an even # of carbon atoms, w/ hydrogen atoms along the length of the chain and at one end of the chain & a carboxyl group at the other end of it. I hoped this helped!</span>
