Geography

Which layer of the rainforest receives the most sunlight?

• Forest floor

• Understory

• Canopy

• Emergent layer

What is a common adaptation of plants in the rainforest to cope with low light on the forest floor?

• Thick, waxy leaves

• Large, broad leaves

• Needle-like leaves

• Deep root systems

What are "buttress roots" an adaptation for?

• Absorbing more sunlight

• Supporting tall trees in shallow soil

• Storing water

• Attracting pollinators

What is a common adaptation of rainforest plants to shed excess water?

• Small, compact leaves

• Thick bark

• Drip tips

• Deep taproots

Which of the following is a common type of plant found in tropical rainforests?

• Cacti

• Conifers

• Orchids and bromeliads

• Grasses

The high biodiversity of tropical rainforests is primarily due to:

• Low rainfall

• Stable, warm climate and abundant resources

• Frequent wildfires

• Frozen ground

What is the primary factor limiting the growth of understory plants in a tropical rainforest?

• Lack of water

• Nutrient-poor soil

• Limited sunlight

• High temperatures

What is the primary reason for the high rate of evapotranspiration in tropical rainforests?

• Low humidity

• Dense vegetation and high temperatures

• Frequent droughts

• Strong winds

Why are many rainforest animals brightly colored or patterned?

• To attract mates and deter predators

• To camouflage in the dense vegetation

• To regulate body temperature

• To absorb more sunlight