Dry Lab Exam Revision 2024 - Alexandria University PDF

Revision FOR dry lab EXAM  Dry lab exam  Microscope  Starch  Ca-ox crystals  Plant anatomy ( examples of lignified elements in plants –stomata & hairs)  Leaf morphology  Microscope parts  Optical Microscope Parts Eyepiece Body Tube Revolv...

Revision FOR dry lab EXAM  Dry lab exam  Microscope  Starch  Ca-ox crystals  Plant anatomy ( examples of lignified elements in plants –stomata & hairs)  Leaf morphology  Microscope parts  Optical Microscope Parts Eyepiece Body Tube Revolving Nosepiece Arm Objective Lens Stage Stage Clips Coarse adjustment knob Diaphragm Fine adjustment knob Light source Base 4  Starch  Potato Wheat Maize Rice Type of Starch Shape Pyramidal Rounded Polyhedral, blunt Polyhedral, Sharp edges edges Size The largest Varying Sizes Varying Sizes The smallest Hilum Visible Distinct Visible Faint Visible Distinct Invisible Eccentric Centric Centric Point Point Cleft Striations Present distinct Present Faint Absent Absent Concentric Concentric Aggregation Simple Simple/Few Simple/Few Compound compound Compound potato wheat Maize Rice  Describe shape of hilum ? Cleft  Calcium oxalate crystals  Forms of Crystals 3)Microcrystals (Sandy 1)Prisms 2)Needle shape crystals)(idioblast) (acicular)(Raphides) Sheath Styloid 4)Clusters 5)Rosettes equal Unequal circumference circumference This picture represents? Styloid of Caox  Plant anatomy ( examples of lignified elements in plants )  Sclereids Sclereids with crystal Sclereids of cassia sheath of cascara  Fibers Phloem Fiber of cassia Septate Fiber with dentate Phloem Fiber of cinchona wall of Ginger Try to diffreniate Tapering ends Rounded ends Smaller Large faint yellow Bright yellow Phloem Fiber of Quillaia Wood fiber of Quassia wood vessel Wavy in groups Of Quassia Sharp ends in groups This picture represents? Sclereids of cassia  Plant anatomy Stomata  Types of stomata Paracytic Diacytic Anisocytic Anomocytic Two subsidiary cells Two subsidiary cells 3-5 cells with their axis parallel with their axis One distinctly smaller to the osteole perpendicular to the cell osteole Paracytic stomata Diacytic stomata Two subsidiary cells with Two subsidiary cells their axis parallel to the with their axis osteole perpendicular to the osteole Try to diffreniate Anomocytic stomata Anisocytic stomata 3-5 cells 3-5 equal One distinctly smaller epidermal cell cells Plant anatomy (Hairs)  TRICHOMES (HAIRS) Glandular hairs Non glandular hairs head stalk unicellular Multicellular uniseriate multiseriate  Non glandular hairs Glandular hairs Non –glandular hair Wooly Non – Non –glandular hair of senna glandular hair of of digitalis Capitate Hair of Labiaceous hair of (unicellular -warty cuticle) Guava (unicellular –smooth (multicellular – Peppermint Peppermint collapsed cell) cuticle) Unicellular head Worm like Unicellular stalk Collapsed cell Unicellular stalk Curved- muticellular head warty cuticle Branched glandular hair of Hyoscyamus Glandular Hair Stellate hair Twin hair Candelabra Non glandular muticus hair of of Cannabis of Tilia of Arnica Hair of Y Shaped Lavender Calendula Multicellar biseriate bicellular Branched at multicellular stalk Star like many points muticellular head  This picture represents? Branched glandular hair of Diacytic stomata Hyoscyamus muticus Leaf morphology  How to describe leaf? Types of leaves Apex Lamina Margin Shape of Lamina  Types of leaves: simple lobed compound pinnate palmate Even no. of leaflets odd no. of leaflets paripinnate imparipinnate Leaf apex: Acute Acuminate Mucronate Emarginate obtuse (notched) Shape of lamina: Lanceolate Elliptical Ovate (egg): Cordate Tubular Spathulate Lamina margin: Lamina base: Symmetric Asymmetric Decurrent LOOK how the midrib divide the lower part Petiole (Leaf-Stalk) vennation Petiolate Sessile Parallel Reticulate Exercise to learn how to describe leaf ?  What is the type of leaf? Compound imparipinnate  Describe leaf base? Asymmetric base  Describe leaf margin? Crenate margin  Describe shape of lamina? spathulate Describe leaf apex? Notched apex Describe venntation? Reticulate