Chapter 2 Plants and Environment

Which of the following is NOT a characteristics of plants in tropical rainforests?

• They have buttress roots.

• They have broad leaves.

• Their leaves have a smooth surface.

• Their leaves are needle-shaped.

Plants in wetlands have ______ roots to get more oxygen in the air.

Lotuses grow in wetlands. Their stems have _____ to store more oxygen.

Which of the following are environmental factors that affect plant growth? (There can be more than one answer.)

• Rainfall

• Temperature

• Number of animals

• Population

Cacti in deserts have needle-shaped leaves to reduce water loss.

• True

• False

Wetland soil has high ____ content.

What is the functions of broad leaves?

• Reduce nutrient loss

• Shed excess water

• Get more sunlight

• Reduce water loss

What is the functions of deep roots?

• Store water

• Support tall and thick trees

• Absorb underground water

• Absorb surface water quickly

What is the functions of shallow roots?

• Store water

• Support tall and thick trees

• Absorb underground water

• Absorb surface water quickly

What is the functions of leaves with a smooth surface?

• Reduce nutrient loss

• Shed excess water

• Get more sunlight

• Reduce water loss