Question:

In the given diagram of the cystic stage of Entamoeba identify parts labelled as a, b, c, d

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Entamoeba cyst = nucleus + glycogen granule + chromatoid body + cyst wall.
Updated On: Jul 18, 2026
  • Incorrect arrangement
  • Incorrect arrangement
  • Correct identification arrangement
  • Incorrect arrangement
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The Correct Option is C

Solution and Explanation

Step 1: Understanding Entamoeba cyst structure.
Entamoeba histolytica cyst is a resistant stage formed during unfavorable conditions. It contains specific structures like nucleus, glycogen granules, chromatoid bodies, and cyst wall.

Step 2: Role of cyst wall.
The cyst wall protects the organism from harsh environmental conditions. It is the outermost protective covering of the cyst.

Step 3: Nucleus identification.
Nucleus controls cellular activities and is clearly visible inside the cyst. It plays a role in reproduction after excystation.

Step 4: Glycogen granules function.
Glycogen granules act as stored food reserves for the parasite. They provide energy during survival in the dormant stage.

Step 5: Chromatoid bars significance.
Chromatoid bodies are rod-shaped structures involved in ribonucleic material storage. They are characteristic of Entamoeba cysts.

Step 6: Final conclusion.
Thus, the labeling of a, b, c, and d in the correct order represents proper identification of cyst structures.
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