Question

Match the oceanic zones with their inhabitants.

$\begin{array}{ccc}\text{Column I}& \text{Column II}& \text{Column III}\\ \text{(1) Sunlit zone}& \text{(a) Abyssal zone}& \text{(i) Corals}\\ \text{(2) Twilight zone}& \text{(b) Euphotic zone}& \text{(ii) Angler fish}\\ \text{(3) Dark zone}& \text{(c) Bathyal zone}& \text{(iii) Planktons}\end{array}$

• A. 1-b-iii; 2-c-i; 3-a-ii
• B. 1-c-ii; 2-b-i; 3-a-iii
• C. 1-a-i; 2-b-ii; 3-a-iii
• D. 1-c-i; 2-a-iii; 3-b-ii

Answer 1

The correct option is A 1-b-iii; 2-c-i; 3-a-ii

$\bullet$ Marine ecosystem is divided into three different zones based on the availability of light at different depths:
i) Euphotic zone/sunlit zone
ii) Bathyal zone/twilight zone
iii) Abyssal zone/dark zone
$\bullet$ Oceanic zones have variations in temperature, pressure, light, etc. These abiotic factors give rise to various adaptations in organisms in the different zones.