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What is formation of a cyst by secreting a hard resistant covering

Asked by arghadeep856 28th May 2019, 9:53 PM
Answered by Expert
Answer:
  • Amoeba reproduces primarily by binary fission.
  • However, a method known as multiple fission is adopted by the unicellular organism Amoeba to survive and reproduce under unfavourable conditions.
  • When the conditions are unfavourable, Amoeba withdraws its pseudopodia and becomes almost round. It secretes a hard covering called cyst.
  • The cyst forms a thick protective coat around it. Inside the cyst, the nucleus undergoes repeated divisions to form many nuclei.
  • Nuclear division is followed by the division of cytoplasm. Hence, eventually many new daughter cells are formed.
  • On the return of favourable conditions, the cyst bursts open to release these daughter cells.

 

Answered by Expert 29th May 2019, 10:50 AM
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