Plant nutrition：練習題

What is the function of the waxy cuticle found on the surface of a dicotyledonous leaf?

What is the balanced symbol equation for photosynthesis in the presence of light and chlorophyll?

Under which set of environmental conditions would the rate of photosynthesis in a typical C3 plant be highest, assuming water is not a limiting factor?

In a diagram showing the cross-section of a leaf, which tissue layer consists of tall, cylindrical cells that are closely packed together and contain the highest number of chloroplasts?

Why do plants convert the glucose produced during photosynthesis into starch for long-term storage?

Photosynthesis is the process by which plants produce their own food.
(a) State the word equation for photosynthesis.
(b) Chlorophyll is a pigment found in chloroplasts. Describe the role of chlorophyll in the process of photosynthesis.
(c) Most leaves are adapted for photosynthesis by being thin. Explain how this feature increases the efficiency of the process.

A student conducts an investigation into the rate of photosynthesis in an aquatic plant.
(a) State the balanced symbol equation for photosynthesis.
(b) The student varies the distance of a light source from the plant and measures the volume of gas produced. Explain the effect of increasing light intensity on the rate of photosynthesis in terms of energy transfer and limiting factors.
(c) Name the green pigment required for this process and explain its specific role in the synthesis of carbohydrates.