Question

For an ecosystem, the two main structural features are -
(i) Species composition
(ii) Energy flow
(iii) Decomposition
(iv) Stratification

• A. i and iv only
• B. ii and iii only
• C. i only
• D. ii, iii and iv only

Answer 1

Answer: (A)

The basic structural and functional unit of ecology is an ecosystem which is made up of abiotic and biotic components. There is a characteristic physical structure within each ecosystem due to the interaction of abiotic and biotic components. Species composition and stratification form the two main structural features of an ecosystem. For any ecosystem to function and sustain, solar energy supply is a basic requirement.