Statement I: The keys are based on the contrasting characte…

Biology The Living World Statement Based Questions Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

Statement I: The keys are based on the contrasting characters generally in a pair called

lead.

Statement II: Each statement in the key is called a couplet.

Both statements are correct.

Statement I is correct & II incorrect.

Statement II is correct & I incorrect.

Both statements are incorrect.

Text Solution

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The correct answer is:

Both statements have swapped the definitions of the terms couplet and lead as defined in biological taxonomy:

Statement I is incorrect: The keys are based on contrasting characters generally in a pair called a couplet, not a lead.

Statement II is incorrect: Each individual statement within a taxonomic key is called a lead, not a couplet.

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