Understanding Leaves: Structure, Function, and Adaptations

What is the primary function of a leaf in a plant?

• To capture sunlight for photosynthesis

• To absorb water from the soil

• To store nutrients

• To provide structural support

Why do some trees shed their leaves?

• To grow taller

• To increase photosynthesis

• To conserve resources during stressful conditions

• To attract pollinators

Which of the following is a characteristic of evergreen plants?

• They lose all their leaves in winter

• They have soft, easily digestible leaves

• They have tough, leathery leaves that last a long time

• They only grow in tropical climates

What is a common adaptation of evergreen leaves to deter herbivores?

• Bright colors

• High water content

• Soft texture

• Presence of resins

What pigment is responsible for the green color in leaves?

• Xanthophyll

• Chlorophyll

• Anthocyanins

• Carotenoids

What causes the yellow color in leaves when chlorophyll breaks down?

• Chlorophyll

• Anthocyanins

• Carotenoids

• Xanthophyll

Which pigment is responsible for red colors in some leaves?

• Xanthophyll

• Carotenoids

• Chlorophyll

• Anthocyanins

Why might some plants have variegated leaves?

• To attract insects

• To store more water

• To increase photosynthesis

• For ornamental purposes

What is the role of anthocyanins in leaves?

• To absorb sunlight

• To provide structural support

• To store nutrients

• To give red coloration

What is the main reason for the seasonal leaf color change in deciduous trees?

• Breakdown of chlorophyll revealing other pigments

• Increase in leaf size

• Change in leaf shape

• Increase in chlorophyll production