How do microorganism survive under unfavorable conditions ?
Answers
Microorganisms survive under the unfavourable conditions of water, temperature and other chemical conditions by forming a hard layer as the outer layer on their body, which is generally known as spore. It is also known as cyst.This layer disappears when favourable conditions to survive re-appear. In this way, microorganisms, under the worse conditions of temperature, lack of water and other adverse effects of various chemical conditions , survive.
•Microorganisms are spread in all parts of world,from the earth's core to the air we breathe. They will in the places with harshest climates. The answer to your question is adaption and evolution. They have evolved and adapted in the manner,that they can survive in these places,may be the artic or the core. Tracing their phylogenetic relationships would help in understanding these adaptations.
•Microorganisms can replicate and reproduce quickly,thus their population never ending.
•They form a protective covering like endospore,which protects them from these conditions
•When an adaption process takes place,their is a change in the gene pool (DNA of the organism) and when the organism reproduces,the genes pass from one generation to the other. They become heat resistant,chill resistant etc.
•It is to be understood that evolution is a long process,organisms of species evolve in accordance with the changing environment.
Topics covered:
Microbiology
Phylogeny
Hereditary