Select the most appropriate one-word substitute for ‘living in trees’ in the…

2026

Select the most appropriate one-word substitute for ‘living in trees’ in the sentence below.

A theory states that mankind has descended from ______ animals.

Answer: A. arborealConceptA one-word substitution replaces a phrase with a word that preserves both its meaning and its grammatical role. Before a noun such as ‘animals’, the…

  1. A.

    arboreal

  2. B.

    herbivorous

  3. C.

    aquatic

  4. D.

    terrestrial

Attempted by 34 students.

Show answer & explanation

Correct answer: A

Concept

A one-word substitution replaces a phrase with a word that preserves both its meaning and its grammatical role.

Before a noun such as ‘animals’, the substitute should be an adjective describing the intended characteristic.

Application

The expression ‘living in trees’ identifies a tree-dwelling habitat. The adjective for this characteristic is ‘arboreal’, so ‘arboreal animals’ forms the required adjective–noun combination.

Contrast

  • ‘Herbivorous’ describes a plant-based diet rather than a habitat.

  • ‘Aquatic’ describes a water-based habitat.

  • ‘Terrestrial’ describes a land-based habitat.

Cross-check

Substituting the word gives ‘mankind has descended from arboreal animals’, which is grammatical and retains the intended meaning.

Therefore, the required word is ‘arboreal’.

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