Characteristics of Biomes and Adaptations

What are the primary factors used to define terrestrial biomes?

• Average temperature, average rainfall, and dominant plant types

• Altitude, humidity, and soil composition

• Ocean currents, wind patterns, and animal migration routes

• Proximity to mountains, presence of rivers, and human population density

Which of the following best describes the typical climate of a tropical rainforest?

• Low rainfall (30-50 cm/year) and warm temperatures (25-29°C)

• High rainfall (200-400 cm/year) and high average temperatures (25-29°C)

• Seasonal rainfall (30-100 cm/year) and cold winters (-10°C)

• Very low rainfall (less than 30 cm/year) and extreme temperature fluctuations

Why do tropical rainforests support a rich diversity of species?

• They have a simple, uniform structure that allows many species to coexist

• Their layered structure provides many different habitats

• They experience extreme temperature fluctuations, promoting adaptation

• They are frequently disturbed by natural disasters, leading to new niches

What is a defining characteristic of a desert biome?

• High humidity and consistent rainfall throughout the year

• Low rainfall (less than 30 cm/year) and can be either very hot or very cold

• Moderate temperatures and seasonal rainfall

• Dense vegetation and rich biodiversity

What are common adaptations of plants in desert biomes?

• Broad leaves and shallow root systems

• Long tap roots and the ability to store water in stems and leaves

• Rapid growth during wet seasons and dormancy during dry seasons

• Dependence on permafrost for water supply