The epidermis has numerous functions: protection against various chemical and physical influences, against being fed upon by animals and against infestation by parasites protection of the plant against desiccation participation in gas exchange, in secretion of metabolic compounds and in absorption of water 
site of receptors for light and mechanical stimuli that help to transform signals from the surrounding to the plant 
The epidermis has accordingly a number of differentiated cell types to serve the various functions.Variations typical for certain species and different organizations of the epidermis in the miscellaneous plant organs add to the number of different cells. Three main types exist: 
1. the basic epidermis cell 
2. the cells of the stoma complexes and 
3. the trichomes (gr.: trichoma = hair), epidermal attachments of varying shape, structure and function 
1 5 1
  • Brainly User
Chloroplasts are absent in epidermal cells, that means epidermis is transparent. Transparent epidermis allows  maximum amount of light to pass through to the chloroplast containing palisade cells beneath so that they can perform photosynthesis efficiently. 
1 5 1