Multiple choice

_________ is/are useful for the survival of species.

  1. Copying of DNA

  2. Variations

  3. Continuation

  4. Nutrition
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Species need to reproduce one generation after the other, and also to adjust with the changing environment and other conditions to survive. Reproduction alone cannot help them to adapt. Hence, variations are very useful for survival of species. Nutrition is necessary for survival of an individual and cannot insure survival of species. Option (3), i.e. 'continuation' is not a scientific term.

Keep practicing — related questions