All heterotrophs require an environment which can provide:

In majority of higher animals and plants,$ . . . . . . $ and $ . . . . . . $ are mutually exclusive events.

Living organisms show self-consciousness. Explain.

Match Column-$I$ (Scale) with Column-$II$ (Biological entity) and select the correct option:
| Column-$I$ (Scale) | Column-$II$ (Biological entity) |
| :--- | :--- |
| $(a)$ Macroscopic | $(i)$ Cells |
| $(b)$ Microscopic | (ii) Organisms |
| $(c)$ Sub-microscopic | (iii) Society |
| $(d)$ Conceptual | (iv) Atoms |

Which of the following is a characteristic property of a living organism?

What is the fundamental property of all living organisms?