Without a cuticle, a plant

will lose water more quickly
cannot perform photosynthesis
cannot store food
will lose oxygen to the air

The answer is A. The cuticle is a protective film that is non cellular covering the outer cell layer (epidermis) of green, aerial parts of plants. Cuticles protect plants against drying (desiccation), UV radiation, and various kinds of physical, chemical and (micro)biological agents. The cuticle also provides some support. Actually the cuticle which protects the underlying tissues has basically the same function as our own skin. In several groups of plants, cuticles are very resistant. Only few groups do not generally have highly resistant cuticles e.g. ferns and lycopods.