Multiple choice

Which life process is not essential for survival of life?

  1. Digestion

  2. Respiration

  3. Excretion

  4. Reproduction
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An individual organism can survive without reproducing, though the species cannot continue without it. Digestion, respiration, and excretion are essential metabolic processes that maintain life functions in individual organisms. Reproduction ensures continuity of the species but is not required for an organism's survival.

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