Question

how does trichomonas, plasmodium and balantitium differ structurally

Answer 1

The trichomonas are 10micrometre in length and pear shaped in morphology. It have 4 flagella at the anterior end. This feature is unique. The trichomonas have lipophosphoglycan for adherence on host cells.

The balantidium are are about 60 micrometre in length and about 40 micrometre in thickness. They are almost elliptical during the cyst stage. Also they have numerous cilia which is a unique feature. They have two nuclei, one is spherical in shape and other is bean-shaped.

The plasmodium is a double membrane parasite of red blood cells. The matrix of plasmodium have granules. They have large nucleus but the boundaries are not properly defined. We can say that the large nucleus is not much clear in boundaries. They have large vacuole. Also they have no flagella for locomotion which is a unique feature.