Which of the following is / are unique characteristic / characteristics of equatorial forests? 1. Presence of tall closely set trees with crowns forming a continuous canopy 2. Coexistence of a large number of species 3. Presence of numerous varieties of epiphytes Select the correct answer using the codes given below.

The answer is D, because all three statements describe equatorial evergreen forests. These forests lie in the equatorial belt, roughly 0 to 10 degrees latitude, where temperature stays high and rainfall is heavy and spread through the year.

• Statement 1 is correct: the trees are tall and closely spaced, and their crowns form a continuous canopy that keeps most light from reaching the forest floor.
• Statement 2 is correct: these forests hold the highest species diversity among terrestrial biomes, and a single hectare can contain hundreds of tree species.
• Statement 3 is correct: the shaded, humid canopy supports abundant epiphytes such as orchids, ferns, mosses and bromeliads, which grow on branches rather than in soil.

Core concept: the equatorial climate, classed as Af in the Koppen system, drives both the structure and the diversity of these forests. Mains link: the same conditions make these ecosystems fragile, which is why tropical deforestation is a major biodiversity concern.

Trap: candidates pick option B or C by treating the canopy statement as a feature of savanna or temperate forests, or by assuming epiphytes are rare. Dense canopy and abundant epiphytes are both typical of rainforests.