Answer:
Phylum platyhelminthe
Explanation:
Although a few of the free living marine and terrestrial species are very beautiful, most species are not particularly attractive to the human mind. Their body is dorso-ventrally flattened.
They exhibit bilateral symmetry. They do not have a body cavity and are acoelomate. The movement of most platyhelminthes is using a wavelike motion that is controlled by longitudinal, circular, and oblique layers of muscle as they contract and relax simultaneously.
Answer:
As seen in the question above, "constraint" is a word that indicates a limitation or condition. In this case, we can say that the "restriction" is an imposition to a limit under a given situation, and it can also mean an imposition of the free execution of an activity, skill and even limitation and a conditioning factor to a certain freedom.
Answer
Villi is present on both of surface
Explanation
Intestine and lungs both have million of villi on the surface .In lungs and intestine villi increase the surface area but purpose is different . In lungs it is use for air exchange and in intestine it is use for food absorption .Both Villi of intestine and lungs are one cell thick and have maximum blood capillaries for food and air exchange respectively .
Answer:
Capsule - call wall - plasma membrane
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