The chief advantage of encystment of an Amoeba is:
Correct answer: A. The ability to survive during adverse physical conditions
- A. The ability to survive during adverse physical conditions
- B. The ability to live for some time without ingesting food
- C. Protection from parasites and predators
- D. The chance to get rid of accumulated waste products.
Explanation
Amoeba forms a cyst and reproduces by multiple fission during adverse environmental conditions. The animal secretes a three layered, protective, chitinous cyst around it and becomes inactive. Inside the cyst, the nucleus repeatedly divides to form several daughter nuclei, which arrange themselves near the periphery. Each daughter nucleus becomes enveloped by a small amount of cytoplasm, thus forming a daughter amoeba, called amoebula or pseudopodiospore. When favourable conditions arrive, the cyst breaks off liberating the young pseudopodiospores, each with fine pseudopodia. They feed and grow rapidly to become adults and lead an independent life.
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About Kingdom Protista
Kingdom Protista contains mainly unicellular eukaryotes, although some forms are colonial or multicellular, with varied nutritional and reproductive methods. Questions examine protozoans, algae and examples such as Amoeba, Paramecium and Euglena, while distinguishing protists from prokaryotes, fungi and true plants.
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