The organism has a simple life cycle, existing as either the motile trophozoite or the infectious, hardy cyst form. Trophozoites of E. histolytica reside within the anaerobic confines of the human colon, lack mitochondria, derive energy from fermentation and reproduce by binary fission.

Trophozoite of Entamoeba reproduces by mitosis.

Explanation:
Trophozoite is the active feeding and dividing stage of the protozoan parasite Entamoeba. It is the stage of the parasite's life cycle that resides in the host's intestinal tract and causes amoebic dysentery.

Mitosis:
Mitosis is a type of cell division that results in the formation of two identical daughter cells, each containing the same number of chromosomes as the parent cell. It is a process by which the genetic material (DNA) is replicated and distributed equally to ensure the growth, development, and repair of cells. Mitosis consists of several phases: prophase, metaphase, anaphase, and telophase.

Reproduction in Trophozoite of Entamoeba:
The trophozoite stage of Entamoeba reproduces by mitosis. During mitosis, the genetic material of the trophozoite is replicated, and the replicated chromosomes are separated into two daughter cells. This process allows the trophozoite to produce identical copies of itself.

Advantages of Mitosis in Trophozoite Reproduction:
Mitosis is advantageous for the trophozoite of Entamoeba due to the following reasons:

1. Rapid Reproduction: Mitosis allows for rapid cell division, enabling the trophozoite to increase its population quickly within the host's intestinal tract.

2. Genetic Stability: Mitosis ensures that the genetic material is faithfully replicated and distributed to the daughter cells. This helps in maintaining the genetic stability of the trophozoite population.

3. Clonal Expansion: Mitosis produces genetically identical daughter cells, leading to clonal expansion of the trophozoite population. This allows the parasite to efficiently colonize the host's intestine and cause infection.

4. Adaptability: As the trophozoite population reproduces by mitosis, it can adapt to changes in the host's intestinal environment and evade the host's immune response.

Therefore, the trophozoite stage of Entamoeba reproduces by mitosis, which is a crucial process for its survival, proliferation, and pathogenicity.

Because it causes trotopia