Designed by Pyeongsug Kim ©2009 SI session Lab. Practice for Final Part I Spring 2009 Dr. Hughey’s Bio 3 (Lab.)

Designed by Pyeongsug Kim, ©2009 A) B) What type of root system are you seen? Monocot? Eudicot? A) B) Tap root (Eudicot) Fibrous root (Monocot)

Designed by Pyeongsug Kim, ©2009 What type of root system is Dr. Hughey pointing and give rise from stem? Adventitious root

Designed by Pyeongsug Kim, ©2009 A B C D E F G H I What are the three regions in root? Region of maturation, Region of Elongation, Apical meristem(Region of Cell Division) Label. (A thru I) A- B- C- D- E- F- G- H- I- Region of maturation Region of Elongation Apical meristem (Region of Cell Division) Protoderm Ground meristem Procambium Apical meristem Promeristem Rootcap

Name of tubular extension? Root hair What is the function? facilitate absorption. Name of the region where the tubular extension is present? Region of maturation Designed by Pyeongsug Kim, ©2009

Name of the thimblelike mass of parenchyma? Region? Function? Rootcap; Region of cell division(Apical meristem); Covers the root and secretes mucigel What is the name of structure penetrating the cortex? What is the name of part where the structure originates? Lateral root; Pericycle

Designed by Pyeongsug Kim, ©2009 Monocot? Eudicot? How do you know? Monocot; Vascular cylinder in ring with pith. Lateral root; Pericycle What is the name of structure which the arrow indicates? What is the name of part where the structure originates?

Monocot? Eudicot? How do you know? Eudicot; Vascular cylinder solid. Designed by Pyeongsug Kim, ©2009

A B C D E #10 Monocot root? Eudicot root? Eudicot root Label A- B- C- D- E- Pericycle Primary Phloem Endodermis Metaxylem Protoxylem (first-formed primary xylem)

Designed by Pyeongsug Kim, ©2009 A B C D E F Monocot root? Eudicot root? Can you see secondary growth? Monocot root; No Only primary growth Label A- B- C- D- E- F- Endodermis Protoxylem (first-formed primary xylem) Primary Phloem Pericycle Early metaxylem Late metaxylem

Designed by Pyeongsug Kim, ©2009 A B F G C D E Label A- B- C- D- E- F- G- Protoderm Leaf promordium Ground meristem Bud primordium Apical meristem Node

Designed by Pyeongsug Kim, ©2009 A B Can you see secondary growth? No Only primary growth Vascular bundle Pith (ground tissue) Label. A- B- Monocot? Eudicot? How do you know? Eudicot ; the vascular tissues forms of discrete strands

Designed by Pyeongsug Kim, ©2009 A B Label. A- B- Monocot? Eudicot? How do you know? Vascular bundle Pith (ground tissue) Can you see secondary growth? Dicot ; the vascular bundles appear scattered throught the ground tissue. No Only primary growth

E F A B C D G H IJ Designed by Pyeongsug Kim, ©2009 Label. A: B: C: D: E: F: G: H: I: What type of plants has the structures you are seeing? How do you know? Hydrophyte ; Large intercellular spaces for buoyancy Upper Epidermis Vein(vascular tissue) Stoma Palisade parenchyma Spongy parenchyma Trichome Intercellular space(buoyant) Lower epidermis Bundle sheath

AB C F G H J E I Designed by Pyeongsug Kim, ©2009 Label. A: B: C: D: E: F: G: H: I: J: What type of plants has the structures you are seeing? How do you know? Xerophyte ; Thick waxy cuticle, stomatal crypts Cuticle Vein(vascular tissue) Upper epidermis Palisade parenchyma Spongy parenchyma Lower epidermis Trichome Guard cell Stomatal crypts Bundle sheath

Designed by Pyeongsug Kim, ©2009 C D A B H GF E I Label. A: B: C: D: E: F: G: H: I: What type of plants has the structures you are seeing? Mesophyll Xylem Upper epidermis Palisade parenchyma Spongy parenchyma Lower epidermis Stoma Phloem Trichome Bundle sheath

Designed by Pyeongsug Kim, ©2009 There are two layers in the zone. What are they? Function in each? You are look at a zone of a leaf. What is the name of zone of the leaf? Abscission (the normal separation of the leaf from the stem.) Separation layer – the break occur Protective -forms a leaf scar

Designed by Pyeongsug Kim, ©2009 A) B) Monocot? Eudicot? How do you know? A- B- Eudicot- random stomata Monocot-parallel stomata

Designed by Pyeongsug Kim, ©2009 Name of term of this phenomenon by the internal stimulus? Auxin(hormone) Which one is the stronger internal stimulus? What internal stimulus in a plant can cause different height and lateral length as shown in the two pictures? Bottom tree Auxin inhibits axillary(lateral) buds How the internal stimulus works? Apical dominance

Designed by Pyeongsug Kim, ©2009 A B C If you cut the blade and then put IAA(Auxin) in lanolin on it in the plant A, only lanolin on it in the plant B, and put nothing on it in the plat C. What happens in each: Plant A, B, & C Plant A; Abscission does not occurs. Plant B; Abscission occurs. Plant C; Abscission occurs. What is effect of IAA(Auxin)?Prevent abscission. What is effect of lanolin?No effect

Designed by Pyeongsug Kim, ©2009 You are looking at same species. What external stimuli cause different height? What is the name of ? mechanical stimuli. Thigmomorphogenesis

Designed by Pyeongsug Kim, ©2009 A B You are doing experiment of hormone auxin. You prepare two pots and plant dicot and eudicot in each pot. You forget to put a label in each. After 3 weeks, you saw the result of the experiment. Which pot has been treated with 2,4 D(synthetic Auxin)? How do you know? A: Because auxin acts as an herbicide(killing dicot)

Designed by Pyeongsug Kim, ©2009 What Hormone can cause different height in a same species? Effect of the hormone? Gibberellin causes hyperelongation of shoots by stimulating cell division and elongation.

Designed by Pyeongsug Kim, ©2009 What is the name of phenomenon in root? What is the name of phenomenon you are seeing in shoot? Negative Gravitropism What external stimulus cause the shoot grow upward? Gravity Is the growth in the root same as the shoot? No; the roots grow downward. Positive Gravitropism

Designed by Pyeongsug Kim, ©2009 A B C In the picture C, which part is involved by the movement (solar- tracking) of sunflower? Explain how the part works to move the flower. What type of tropism is in each picture A, B, C? Write the external stimulus in each. A- B- C- Phototropism; sunlight Thigmotropism; solid object Heliotropism; Sunlight Pulvini; Turgor pressure changes of the Pulvini.

Designed by Pyeongsug Kim, ©2009 What is the name of phenomenon you are seeing? What is the external stimuli? Which part is involved by the movement? Thigmonasty Touch Pulvini; Turgor pressure changes of the Pulvini.

Designed by Pyeongsug Kim, ©2009 What are the name of square equipment and thread(or like ruler)? What are they for? Square - Quadrats Thread- Transects For study or measurement of the distribution or abundance of plants or other organisms in an area.