<span>The appropriate response to the question is parenchyma. The parenchyma is the utilitarian parts of an organ in the body. This is as opposed to the stroma, which alludes to the basic tissue of organs, specifically, the connective tissues. It is a functional part of animal's body. </span>
Answer:
Platyhelminthes
Explanation:
Platyhelminthes (phylum Platyhelminthes), also known as flatworms, are bilaterian, unsegmented and soft-bodied invertebrates. Platyhelminthes are hermaphroditic organisms with internal fertilization. In addition, this group shows a series of characteristics including 1-a ladder-like nervous system, 2-presence of parenchyma in the body cavity, and 3-flame cells, i.e., specialized excretory cells that function like a kidney. Platyhelminthes can be divided into three groups: Turbellaria (generally found in freshwater), Trematoda (generally parasitic), and Cercomeromorpha (exclusively parasitic).
The answer is A. random gene pool changes in small population.
