Lab Practical 2

Plant Anatomy

1    image1, image2. Pelargonium. This is a Pelargonium (geranium) stem in XS. The first image is of the entire XS, the second a close-up of one area. What are these cells that looks like a purple or blue stripe?. vascular cambium
2    image This is a XS of Tilia (basswood). What is this light colored tissue here AND what is dark colored tissue?. rays, secondary phloem fibers
3    image This is a paradermal section through a woody stem of Robinia. What are these cells called?. fusiform initials
4    image This is a cross section through the stem of Helianthus. What is this tissue?. phloem
5    image
This is a cross section through the stem of Cucurbita. What is this structure?. sieve plate
6    image This is a LS section of the stem of Vitis (grape). These are similar to what we just saw in Cucurbita, but how are they different?. compound sieve plate
7    image This LS of Helianthus shows some dark red staining material. What is this?. P-protein plug, slime plug, callose
8    image On this cut surface of the stump of Robinia, what meristematic tissue would you expect to be at the junction between the outer orange colored tissue and the inner white colored tissue. As a hint, look at fibers emerging here.. phellogen (cork cambium)
9    image This is a section of Ginkgo. What are these cells that are nicely stacked in vertical rows?. phellem
10    image These cells resemble those seen in the previous slide of Ginkgo, i.e. nicely stacked in row. But notice that there are several layers of these and that they enclose fibers. What is this called?. rhytidome
11    image In this LS of an Allium (onion) root, what are the cells here?. procambium
12    image In this Amaranthus seedling, three distinct regions or zones can be seen. What is this one?. Region of elongation
13    image This is a close-up view of a root XS of Smilax. This tissue on the outside is epidermis, but what is the cell layer just below called?. exodermis
14    image same image as above. What is the material that impregnates the cell wall in these cells?. suberin
15    image In this willow (Salix) root cross section you can see branch root arising. What tissue is the source of branch roots?. pericycle
16    image In this root cross section, notice the dark red staining cells here. They are darker red at their junctions. What is the name of the coating on these cells that forces water to go through the symplast?. Casparian strip
17    image same image as above. What is the stelar type shown here? Be specific.. polyarch actinostele
18    image This is a hand section of an orchid root. What is this layer of cells on the outside called?. velamen
19    image What is the specialized root in this parasitic mistletoe called?. haustorium
20    image These are root cells of the nonphotosynthetic orchid Corallorhiza. But inside them are fungal hyphae. What do we call this association?. endomycorrhizae
21    image1, image2 This is a cross section of the root of Tilia (Basswood), both the entire section and a close-up view. What is this tissue?. secondary phloem
22    image This is a XS of the root of tobacco. Does it show primary xylem, secondary xylem, or both?. both
23    image This is a XS of the root of Beta (beet). What are these anomalies in the section?. separate cambial layers
24    image This is a closer view of the previous structures. What are these cells?. secondary phloem
25    image This is a LS of the root of Zea. Is this considered an open or closed type of meristem?. closed
26    image This is a young shoot growing from a potato tuber. What are these structures?. adventitious roots
27    image1, image2 This slide shows a XS through the tissues shown in the previous slide. A closer view shows the region where these structures are arising. What tissues do you think give rise to them?. interfascicular cambium or possibly phloem parenchyma
28    image1, image2 Is this vascular bundle the amphicribral or amphivasal type?. amphicribral
29    image Is this vascular bundle the amphicribral or amphivasal type?. amphicribral
30    image This is a LS through the apical region of a plant. Is that plant a fern, gymnosperm, or angiosperm? How can you tell?. fern. Apical cell with merophytes
31    image This is a LS through the apical region of a plant. What are these layers called?. tunica (multiple layers)
32    image This is a section through the apical region of Pinus. What are the cells in this region called?. central mother cells
33    image What is this structure called?. leaf primordium
34    image What are these cytoplasmically dense cells going to form?. axillary meristem or bud
35    image This tissue in the water plant Elodea has differentiated into aerenchyma. What meristem gave rise to these regular, vertical columns of cells?. rib meristem 36. Salvia. What is this tissue?. procambium
36    image What is this tissue?. procambium
37    image What type of stele would this vascular bundle be a part of?. eustele
38    image Is the outside of the stem to the left or right?. left
39    image Of the xylem and phloem shown here, which differentiated first in the stem?. phloem
40    image1, image2 This is a XS of the stem of Aristolochia. What are these red staining cells called that form a circle?. perivascular fibers
41    image1, image2 What are these blue staining structures?. rays (from the interfascicular cambium)
42    image What is this structure?. lenticel
43    image This is a hand XS of a Bignonia stem. What is anomalous about the tissue shown here?. panels of secondary phloem from a unidirection cambium that invade the xylem
44    image This is a XS of the stem of wheat (Triticum). Notice the vascular bundles are embedded in some red and blue staining tissues (2 kinds). Name one of these.. fibers or collenchyma
45    image In this stem section of Potamogeton (a water plant), the xylem tracheids are destroyed upon internode expansion. What are these spaces called that are left behind?. lacunae
46    image This is a XS of the stem of Cordyline. Compared to other monocots, what is unusual about the anatomy of this plant?. forms secondary growth, cambium from primary thickening meristem
47    image This is a XS of Pinus. Is it a stem or a root?. root
48    image Is this a cross section of a root or stem?. root
49    image This twig of Viburnum in winter condition shows a leaf scar with three "dots" called vascular bundle scars. Remember, the leaf petiole used to attach at this point. From your knowledge of stem anatomy, what is the term for the structure in the stem that leads to these little dots?. leaf traces
50    imageThis pine cone shows what is commonly known as genetic spirals. What is another term for this spirals that the cones scales follow?. parastiches