In which terrestrial biome is plant growth primarily constrained by precipitation rather than temperature?

• A. Temperate deciduous forest
• B. Desert
• C. Tundra
• D. Taiga (Boreal forest)

Answer: (B)

Verified step by step guidance

1. Understand the concept of terrestrial biomes: Terrestrial biomes are large ecological areas on land with distinct climates, vegetation, and animal life. Factors like temperature and precipitation play key roles in determining the characteristics of each biome.
2. Analyze the role of precipitation in plant growth: Precipitation is a critical factor for plant growth as it provides water necessary for photosynthesis and nutrient transport. In some biomes, precipitation is the primary limiting factor rather than temperature.
3. Examine the characteristics of each biome listed: Desert biomes are known for extremely low precipitation, which severely limits plant growth. Tundra biomes are constrained by low temperatures and short growing seasons. Taiga (Boreal forest) biomes are also primarily limited by cold temperatures. Temperate deciduous forests have moderate precipitation and temperature, allowing for diverse plant growth.
4. Identify the biome where precipitation is the primary constraint: Among the options, the desert biome is characterized by very low precipitation, making it the primary factor limiting plant growth. Temperature in deserts can vary widely but is not the main constraint.
5. Conclude that the correct answer is 'Desert': Based on the analysis, plant growth in deserts is primarily constrained by precipitation rather than temperature, distinguishing it from the other biomes listed.