Which of the following environments would tend to have plants with the broadest leaves?

• A. Tropical rainforest
• B. Desert
• C. Temperate grassland
• D. Tundra

Answer: (A)

Verified step by step guidance

1. Understand the relationship between leaf size and environmental conditions. Broad leaves are typically found in environments with abundant water and sunlight, as they maximize photosynthesis and transpiration.
2. Analyze the characteristics of each environment: Tropical rainforests have high humidity, abundant rainfall, and consistent sunlight, which support broad leaves. Deserts have limited water availability, so plants often have small or modified leaves to conserve water. Temperate grasslands experience moderate rainfall and seasonal changes, leading to narrower leaves. Tundras have cold temperatures and short growing seasons, which limit leaf size.
3. Consider the role of transpiration in tropical rainforests. Broad leaves help plants release excess water through transpiration, which is beneficial in humid environments.
4. Evaluate the adaptations of plants in each environment. Plants in tropical rainforests are adapted to maximize photosynthesis and water release, while plants in deserts, grasslands, and tundras are adapted to conserve water and withstand harsh conditions.
5. Conclude that tropical rainforests are the environment most likely to have plants with the broadest leaves due to their favorable conditions for growth and photosynthesis.