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The below mentioned article provides a diagram of monocystis. 

Monocystis

1. It is the slide of different stages of Monocystis which is an endoparasite in the semina’ vesicles of earthworm.

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2. This slide shows irophczoit, gametocyte and sporozoit stages.

3. The trophozoite is the infective stage. It has a spindle shaped body covered with uniform cilia and enclosed in a tough pellicle.

4. The cytoplasm is differentiated into cortex and medulla.

5. The medulla has a large nucleus in the center and numerous paragiycogen granules and the cortex has numerous myonemes.

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6. Nutrition is saprozoic.

7. Two trophozoites become rounded and get enclosed in a common cyst. Each of them is known as gametocyte.

8. The gamtocytes are the reproductive stage.

9. Gametocytes give rise to sporozoits, which in turn develop into trophozoites.