First slide

Asexual Reproduction

Question

The chief advantage of encystment of an amoeba is

Easy

A

the ability to live for some time without ingesting food.
B

the ability to survive during adverse physical conditions.
C

the chance to get rid of accumulated waste products.
D

protection from parasites and predators.

Solution

Under unfavourable condition the Amoeba withdraws its pseudopodia and secretes a three-layered hard covering or cyst around itself. This phenomenon is termed as encystation. When favourable conditions return, the encysted Amoeba divides by multiple fission and produces many minute amoeba or pseudopodiospores; the cyst wall bursts out, and the spores are liberated in the surrounding medium to grow up into many amoebae. This phenomenon is known as sporulation.

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