Designed by Pyeongsug Kim ©2009 SI session Shoots(Stem & leaves) Topic 23, 24 Spring 2010 Dr. Hughey’s Bio 3 (Lab.) Picture from Alluaudia procera

Designed by Pyeongsug Kim, ©2010

Designed by Pyeongsug Kim, ©2009 A B F G H I C D E A: B: C: D: E: F: G: H: I: Protoderm Leaf promordium Procambium Ground meristem Bud primordium Apical meristem Leaf trace Node Leaf trace gap

____- the ground tissue occupying the center of a root or shoot.Pith Designed by Pyeongsug Kim, ©2009 In stems (Eudicot/Monocot)

Designed by Pyeongsug Kim, ©2009 (Eudicot/Monocot) Stem!Root! Pith

Designed by Pyeongsug Kim, ©2009 (Eudicot/Monocot)

Designed by Pyeongsug Kim, ©2009 (Eudicot/Monocot)

From Dr.Hughey’s Bio3 Class slide

Designed by Pyeongsug Kim, ©2009 Need to know how to build Dichotomous key ….

Designed by Pyeongsug Kim, ©2009

Designed by Pyeongsug Kim, ©2010 Epidermis in leaves -Stomata (Guard cells) exchange gas water is lost through here. parallelrows arranged in parallel rows in ________ scattered in ________ monocots dicots monocots dicots

Eudicot- random stomata.Monocot- parallel stomata. From Dr.Hughey’s Bio3 Class slide monocots dicots

Designed by Pyeongsug Kim, ©2010 -_________ a waterproof layer reducing water loss from the plant surface through Evaporation. Epidermis in leaves Cuticle

Designed by Pyeongsug Kim, ©2010Mesophyll -Ground tissue -specialized for photosynthesis. __________________ ~ Rich in chloroplasts ~ Photosynthesis _________________ ~ less chloroplast than the palisade. ~ many intercellular air spaces between cells. ~interconnected and communicate with the stomata. ~ Allow to access the gases Palisade parenchyma Spongy parenchyma

__________ -Plants that are adapted to arid habitats ____________ - Plants that require a large supply of water or grow wholly or partly submerged in water. ___________ - Plants that require an environment that is neither too wet nor too dry. Designed by Pyeongsug Kim, ©2009 Mesophytes Hydrophytes Xerophytes

Designed by Pyeongsug Kim, ©2009 ___________ -Ground tissue -Specialized photosynthesis Mesophyll ________ parenchyma (upper) ________ parenchyma (lower) Palisade Spongy C D A B H GF E A: B: C: D: E: F: G: H: I: Xylem Upper epidermis Palisade parenchyma Spongy parenchyma Lower epidermis Stoma Phloem Trichome Bundle sheath I Mesophytes!

__________ -Large intercellular spaces for buoyancy __________ -Plants that require a large supply of water or grow wholly or partly submerged in water. -Stomata in lower epidermis. Designed by Pyeongsug Kim, ©2009 Hydromorphic leaf E F A B C D G H IJ A: B: C: D: E: F: G: H: I: J: Sclereid Upper Epidermis Vein(vascular tissue) Stoma Palisade parenchyma Spongy parenchyma Trichome Intercellular space(buoyant) Lower epidermis Bundle sheath Hydrophyte

__________ -Plants that are adapted to arid habitats Xerophyte Designed by Pyeongsug Kim, ©2009 AB C F G H J D E I A: B: C: D: E: F: G: H: I: J: Cuticle Vein(vascular tissue) Upper epidermis Palisade parenchyma Spongy parenchyma Lower epidermis Trichome Guard cell Stomatal crypts Bundle sheath ______________ -Thick waxy cuticle, stomatal crypts in lower side Xeromorphic leaf

Designed by Pyeongsug Kim, ©2009 ______________ the normal separation of the leaf from the stem. Abscission _________ layer - Break occur _________ layer - Forms a leaf scar Separation Protective