Multiple choice

Match the column - I with column – II and select the correct option

Column – I Column – II
P. Chlamydomonas nivalis 1. Psychrophile
Q. Listeria monocytogenes 2. Psychrotroph
R. Escherichia coli 3. Mesophile
S. Cyanidium caldarium 4. Thermophile

  1. P - 1, Q - 2, R - 3, S - 4

  2. P - 2, Q - 1, R - 4, S - 3

  3. P - 3, Q - 2, R - 1, S - 4

  4. P - 4, Q - 3, R - 2, S - 1

  5. P - 1, Q - 2, R - 4, S - 3
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A Correct answer
Explanation

Chlamydomonas nivalis is psychrophile (grows at 0°C and has an optimum growth temperature of 15°C or lower). Listeria monocytogenes is psychrotroph (can grow at 0–7°C; has an optimum between 20 and 30°C and a maximum around 35°C). Escherichia coli is mesophile (has growth optimum around 20–45°C). Cyanidium caldarium is thermophile (can grow at 55°C or higher; optimum often between 55 and 65°C).

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