BOT 1010L Lecture Notes - Lecture 12: Stoma, Stipule, Photosynthesis
Document Summary
Heartwood older wood in the venter [of a tree] that becomes nonfunctional. Xylem produced in previous years that may still be active in the transport of water and nutrients. Photosynthesis the production of plant food in the leaf by access to sunlight and water sessile leaf no petiole. stipule leaf found where the petiole contacts the stem. Stomata pores, mostly on the underside of the leaf, allowing exchange of gas (co2 and h2o) Spine leaf modified leaves that discourage nibbling from animals. Tendrils leaves that are adapted to attach to a supporting structure. Bracts modified leaves at the base of a flower. Needles (leaves) modified leaf adapted for dry wind and cold weather. They have a thick outer coat, little surface area, recessed stomata, and specialized cells protecting the vascular system. Bud underdeveloped shoot from which embryonic leaves or flower parts arise. A tough outer coat protects the bud from insects and the environment.
