‘A’ are the components of dermal tissue system. ‘B’ are the components of vascular tissue system. ‘A’ and ‘B’ are respectively

Subsidiary cells are cells of epidermis of aerial plant parts present around guard cells of stomata. Albuminous cells are associated with sieve cells of gymnosperm phloem. Bulliform cells are upper epidermal cells of grass leaves and passage cells are endodermal cells of root without casparian thickenings. Trichomes are epidermal outgrowths of aerial plant parts of dicots.