The term "Steppe" is associated with the bio-region of grasslands. Grasslands are open, flat areas covered primarily with grasses and often without many trees. They can be found in various parts of the world, including North America, Eurasia, and Africa. The steppe biome is characterized by having a semi-arid climate with low rainfall, which results in a limited amount of tree growth. Instead, grasses dominate the landscape and provide a habitat for diverse plant and animal species.

Options 2, 3, and 4 are incorrect. Tropical forests, savannas, and coniferous forests are different types of biomes with distinct characteristics and vegetation. Tropical forests are dense, species-rich forests found near the equator; savannas are transitional areas between forests and grasslands, characterized by a mix of grasses and scattered trees; and coniferous forests are made up of trees that bear cones and have needle-like leaves.