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Multiple Choice
Which of the following is a key adaptation of the cacao tree (Theobroma cacao) that allows it to thrive in the tropical rainforest environment?
A
Deep taproot system to access underground water in dry soils
B
Thick, waxy cuticle to prevent water loss in arid conditions
C
Small, needle-like leaves to reduce transpiration
D
Large, broad leaves to maximize light absorption under the forest canopy
Verified step by step guidance
1
Understand the environment: The tropical rainforest is characterized by high humidity, abundant rainfall, and dense vegetation. Light availability is limited under the forest canopy due to the shading effect of taller trees.
Analyze the adaptations: Plants in the tropical rainforest often develop features to optimize light absorption, as light is a limiting factor in this environment. Large, broad leaves are a common adaptation to capture as much light as possible.
Evaluate the options: A deep taproot system is more suited for dry soils where water is scarce, which is not the case in a tropical rainforest. A thick, waxy cuticle is an adaptation to prevent water loss in arid conditions, which is unnecessary in a humid rainforest. Small, needle-like leaves reduce transpiration, which is more relevant in dry or cold environments.
Identify the correct adaptation: Large, broad leaves are ideal for maximizing light absorption under the shaded canopy of the rainforest, allowing the cacao tree to perform photosynthesis efficiently.
Conclude: The key adaptation of the cacao tree that allows it to thrive in the tropical rainforest is its large, broad leaves, which help it capture sufficient light in a low-light environment.