Can you please help me with a simple and short answers please. Also no meed for
ID: 203333 • Letter: C
Question
Can you please help me with a simple and short answers please. Also no meed for explanation i just need answers.Thank you 19.4 Stems Stems are usually found aboveground where they provide support for leaves and flowers. Vascular tissue extends from the roots, through the stem and its branches to the leaves. Therefore, what function do botanists assign to stems in addition to support for branches and leaves? Explain why a branch cannot live if severed from the rest of the plant. Stems that do not contain wood are called herbaceous, or nonwoody, stems. Usually, monocots remain herbaceous throughout their lives. Some eudicots, such as those that live a single season, are also herbaceous. Other eudicots, namely trees, become woody as they mature. Anatomy of Herbaceous Stems Herbaceous stems undergo primary growth. Primary growth results in an increase in length due to the activity of the apical meristem located in the terminal bud (see Fig. 19.2a) of the shoot system Observation: Anatomy of Eudicot and Monocot Herbaceous Stems Eudicot Herbaceous Stem 1. Examine a prepared slide of a eudicot herbaceous stem (Fig. 19.9), and identify the epidermis (the outer protective layer). Label the epidermis in Figure 19.9 2. Locate the cortex, which may photosynthesize or store nutrients. 3. Find a vascular bundle, which transports water and organic nutrients. The vascular bundles in a eudicot 9.9a. Which vascular tissue herbaceous stem occur in a ring pattern. Label the vascular bundle in Figure I (xylem or phloem) is closer to the surface? 4. Label the central pith in Figure 19.9a. Pith stores organic nutrients. Both cortex and pith are composed of what type of tissue? Figure 19.9 Eudicot herbaceous stem. The vascular bundles are in a definite ring in this photomicrograph of a eudicot herbaceous stem. directed by the Observation. Complete the labeling as xylom phloem sclerenchyma cells cortex parenchyma pith b. 26x 19-10 242 Laboratory 19 Organization of Flowering Plants
Explanation / Answer
1) Stems protect the inner tissue participated in both structural support and vascular transport.
2) Branch cannot live because at the tips, meristem is observed; and stems are required to support flower.
3)In monocot stems, the vascular bundles are scattered, while in stems of Eudicot vascular bundles present in regular ring formation. In a roots of eudicot root, casparian strips permits the endodermis to regulate the entry of water and materials into the vascular cylinder, where xylem phloem are situated.
Labeling of figure 19.9 a):
1 = pith is a mass of parenchyma cells, cortex is also consist of parenchyma tissue
2 = epidermis
3= vascular bundles in rings cortex separates from the pith, xylem is closed to the surface.