- A It is sometimes mistakenly thought to actively perform photosynthesis using embedded chloroplasts within its waxy layer
- B It reduces water loss by transpiration, protects against pathogens, and reflects excess light
- C It is sometimes mistakenly thought to absorb atmospheric water vapor directly into the leaf mesophyll tissue
- D It is sometimes mistakenly thought to provide rigid structural support comparable to lignified sclerenchyma fibres
Correct answer: B. It reduces water loss by transpiration, protects against pathogens, and reflects excess light
Explanation: The cuticle is a layer of cutin (waxy polymer) secreted by epidermal cells. It dramatically reduces cuticular transpiration (water loss through leaf surface), protects against pathogen entry, and reduces UV damage. Desert plants have thicker cuticles.
Concept context
Internal tissue organisation: meristems, permanent tissues (xylem, phloem, parenchyma), and secondary growth. Frequently tested in NEET.