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.
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Explanation:
Organs or skeletal elements of animals and organisms
Three. The right lobe, the left anterior lobe, and the left posterior lobe.
Which disease can destroy red blood cells?
I) Hemolytic anemia is a decease which destroys red blood cells .
Which disease infects T cells?
ii) chromosomal breakage syndromes (CBSs) is one one of those decease that infect T cells.
Which disease produces a scaly, stinging, and itchy rash on the feet?
iii) Eczema , it's a skin disorder .
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