Which of the following tree is found in coniferous forests? I. Chir II. Pine…

Forests are classified by their dominant tree type. Coniferous (needle-leaf) forests are dominated by cone-bearing, needle-leaved evergreen trees (gymnosperms) such as pine, fir, spruce, chir and cedar, adapted to cold or high-altitude climates. Deciduous/broadleaf forests, by contrast, are dominated by broad-leaved trees that shed their leaves seasonally.

Chir (Pinus roxburghii) and Pine are both conifers - cone-bearing, needle-leaved evergreens widespread across the coniferous belts of the Himalayan foothills and other temperate hill regions. Ash (genus Fraxinus), however, is a broad-leaved deciduous tree, not a conifer, and belongs to temperate broadleaf forests rather than the coniferous belt.

• Chir and Pine: both are cone-bearing, needle-leaved evergreens, so this pairing names only the coniferous species among the three.

• Pine and Ash: pairs a conifer with a broad-leaved deciduous tree, wrongly including a non-coniferous species.

• Chir and Ash: again pairs a conifer with a deciduous tree, wrongly including a non-coniferous species.

• Chir, Pine and Ash together: wrongly includes Ash alongside the two conifers.

So, among the three trees listed, only the cone-bearing, needle-leaved evergreens qualify as coniferous-forest species; the broad-leaved deciduous tree does not.