Which of the following is not common among mango, wheat, and brinjal?

Read the following statements:

(a) There is no uncatalyzed metabolic conversion in the living system.

(b) Isolated metabolic reactions in vitro are non-living things.

(c) There are thousands of metabolic reactions occurring simultaneously inside all living organisms.

Select the correct option:

Read the following statements and select the correct option to fill up the blank:

(i) The algal filament and fungal hyphae easily multiply by$\mathrm{\_\_A\_\_}$.

(ii) Growth and reproduction are mutually $\mathrm{\_\_B\_\_}$events in bacteria.

(iii) $\mathrm{\_\_C\_\_}$ is the most obvious and technically complicated feature of living organisms.

How many of the given features are associated with keys?

Couplet, non-analytical, lead, ex situ conservation, quick referral system, a pair of contrasting characters