Question

1. the outer layer of transparent cells on a leaf is called the epidermis. what does the epidermis protect and why is this important? (slide 14)
2. what does the layer of wax that covers the epidermis do? (slide 14)

Explanation:

For question 24: The epidermis protects the inner tissues of the leaf. This is important because it shields the mesophyll (where photosynthesis occurs), vascular tissues (for transport of water, nutrients, and sugars) from physical damage (like abrasion), pathogens (such as fungi, bacteria), and excessive water loss.
For question 25: The wax layer (cuticle) covering the epidermis reduces water loss through transpiration. It forms a hydrophobic barrier that limits the evaporation of water from the leaf surface. This helps the plant conserve water, especially in dry environments.

Answer:

1. The epidermis protects the inner leaf tissues (mesophyll, vascular tissues etc.). It is important as it safeguards from physical damage, pathogens, and excessive water loss.
2. The wax layer (cuticle) reduces water loss (transpiration) from the leaf.