Question

Assertion: Reproduction cannot be considered as the defining characteristic of all living organisms.
Reason: Mules and worker bees are sterile.

• A. Both assertion and reason are true; reason is the correct
  explanation of the assertion
• B. Both assertion and reason are true but reason is not the correct
  explanation
• C. Assertion is true but reason is false
• D. Both assertion and reason are false

Answer 1

The correct option is A Both assertion and reason are true; reason is the correct

explanation of the assertion
A defining characteristic is one that is applicable to all the living organisms and is not seen in any form in non-living things.

Although reproduction is a characteristic feature of living organisms, it cannot be "a defining characteristic" as sterility is a characteristic found in certain living organisms like mules and worker bees.