Question

Identify the correct pairs:
(i) Thermophile            (a) grows optimal at 37 °C
(ii) Mesophile                 (b) grows optimal at low temperature
(iii) Psychrophile             (c) grows optimal at high saline conditions
(iv) Halophile                  (d) grows optimal at 67 °C

• A. (i)-(d)
• B. (ii)-(b)
• C. (iii)-(a)
• D. (iv)-(c)

Answer 1

The Correct Option is A, D

To solve the given question, we must correctly match each term with its corresponding description. Let's analyze each pair:

1. Thermophile:
   • Thermophiles are organisms that thrive at relatively high temperatures, typically between 41°C and 122°C. Therefore, the optimal temperature mentioned in option (d), which is 67°C, aligns with the characteristics of thermophiles.
   • Correct Pair: (i)-(d)
2. Mesophile:
   • Mesophiles are organisms that grow best at moderate temperatures, usually around 20°C to 45°C. The most common optimal temperature for mesophilic growth is around 37°C.
   • Hence, none of the given options directly matches this typical description, as no pair mentions 37°C for mesophiles.
   • Correct Pair: Not listed explicitly in the options.
3. Psychrophile:
   • Psychrophiles thrive at low temperatures, generally around 0°C to 20°C.
   • Option (b) states growing optimally at low temperatures, which is characteristic of psychrophiles, but psychrophile (iii) is not correctly matched in the options given.
   • Correct Pair: Not listed explicitly in the options.
4. Halophile:
   • Halophiles are organisms that grow optimally in high saline conditions. This matches option (c).
   • Correct Pair: (iv)-(c)

Thus, the correct pairs from the given options are:

• (i)-(d)
• (iv)-(c)