| (i) limited space and nutrient. |
| (ii) Accumulation of toxic agent. |
| (iii) Unlimited space and nutrient. |
| (iv) Accumulation of nutrient agent. |
A) (i) and (iii)
B) (iii) and (iv)
C) (i) and (ii)
D) (iv) and (ii)
Correct Answer: C
Solution :
[c] Exponential or log phase cannot sustain for longer period because the nutrients and space are limited and there is competition as well. Microorganisms, when nutrients get exhausted, secrete toxic chemicals which inhibit the growth of other organisms.
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