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Multiple Choice
What is the difference between the root epidermis and the shoot epidermis?
A
The root epidermis has chloroplasts.
B
Only the shoot epidermis gives rise to vascular tissues.
C
Only the shoot epidermis is replaced by periderm in woody plants.
D
Only the root epidermis contains guard cells.
E
Only the shoot epidermis produces a waxy cuticle.
Verified step by step guidance
1
Understand the role of the epidermis in plants: The epidermis is the outermost layer of cells in both roots and shoots, serving as a protective barrier against environmental factors.
Identify the characteristics of the root epidermis: The root epidermis typically lacks chloroplasts because roots are usually underground and do not perform photosynthesis. It is primarily involved in water and nutrient absorption.
Identify the characteristics of the shoot epidermis: The shoot epidermis, which covers stems and leaves, often contains chloroplasts in guard cells and is involved in photosynthesis. It also produces a waxy cuticle to prevent water loss.
Differentiate between the root and shoot epidermis: The shoot epidermis is unique in producing a waxy cuticle, which is crucial for reducing water loss in aerial parts of the plant. This feature is not present in the root epidermis.
Conclude with the correct answer: The statement 'Only the shoot epidermis produces a waxy cuticle' correctly highlights a key difference between the root and shoot epidermis, as the waxy cuticle is essential for protecting the plant from desiccation.