B What is the main function of ^the epidermis in the leaf? ^A) Transport B) Protection ^ ^A During respiration, CO(2) ^and H(2)O pass out of the leaf^through: ^A) Stomata B) Lamellae ^B In fall, pigments such as ^xanthophyll, carotene and ____^mask chlorophyll in the leaf. ^A) Melanin B) Anthocyanin ^A The _____ is a thin, waxy ^film covering the epidermis ^of the leaf. ^A) Cuticle B) Mesophyll ^A What is the process by ^which water is lost in ^plants? ^A) Transpiration B) Cytosis ^A Which structure controls the ^opening of the stomata in ^the leaf? ^A) Guard cell B) Cuticle ^B Xylem and parenchyma ^together form the fibro- ^vascular bundle of stems. ^A) True B) False ^B The _____ layer is the weak ^zone at the base of the leaf ^petiole. ^A) Midrib B) Abscission ^A Epidermal cells form the top ^and bottom layers of the leaf.^A) True B) False ^ ^A What structures are found in ^the palisade and spongy layers^and guard cells of a leaf? ^A) Chloroplasts B) Stomata ^ ^ ^ ^ ^
