Assertion and reason

Exercise and reference answers

Questions

1. Reason

   Perhaps six million exist while fewer than two million are recorded.

   Verdict

   Both are true; the reason explains the assertion.

   Assertion

   The true species count on earth is uncertain.

2. Reason

   Diversity exists at genetic and ecosystem levels as well.

   Verdict

   Both are true; the reason explains the assertion.

   Assertion

   Conserving a single species may not be enough.

3. Reason

   Life originated 3.8 billion years ago.

   Verdict

   Both are true; the reason does not explain the assertion.

   Assertion

   Insects dominate the named animal species.

Explanation