Why are terminal buds considered an active part of the stem? 2. Of what importance are nodes to the plant? 3. What are inter nodes and where are they located?
Q: What type of meristem is found only in monocots, such as lawn grasses?
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Instructions: Look for representative specimens of herbaceous
Examine and compare their external morphology by answering the questions below:
1. Why are terminal buds considered an active part of the stem?
2. Of what importance are nodes to the plant?
3. What are inter nodes and where are they located?
4. What is the function of the lenticels? Do all stems have lenticels?
5. How can you differentiate a monocot plant from a dicot plant just by looking at the stem?
6. What advantage would herbaceous stems have over woody stems?
7. What advantage would woody stems have over herbaceous stems?
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- Instructions: Try to uproot one living dicot (ex. dandelion) and monocot (ex. grass) representative plant. Observe the roots of each plant and characterize as follows: A. Type of root system B. Presence of primary root C. Presence of lateral roots D. Presence of adventitious roots Note: Indicate the name of the plant, the root system it exhibits and the parts present. Tabulate the result of your observation using the table below. Answer the related questions below. Root Characteristics Monocot Specimen (Name) Dicot Specimen (Name) Type of root system Presence of primary root Presence of lateral roots Presence of adventitious roots 1. Which root system gives better anchorage and why? 2. List down five general features of roots you can recognize in both of your specimens.I. Look for representative specimens of herbaceous dicot and monocot stem. The external parts that can be observed are nodes, internodes, leaf scar, lenticel, and buds (axillary and terminal). Examine and compare their external morphology by answering the questions below: 1.. What is the function of the lenticels? Do all stems have lenticels? 2. How can you differentiate a monocot plant from a dicot plant just by looking at the stem? 3. What advantage would herbaceous stems have over woody stems? 4. What advantage would woody stems have over herbaceous stems? II. Compare the internal anatomy of stems of xerophytes, mesophytes, and hydrophytes. Relate differences to the nature/habit of the different plants.Below is a series of pictures of a leaf (x.s.) from a eudicot, Syringa vulgaris. 40x (x.s.) Make a sketch of the 40x leaf cross section and upload it here with the following structures labeled: upper epidermis, cuticle, stomata, guard cells, mesophyll (palisade and spongy), veins (xylem and phloem), bundle sheath, collenchyma cells, lower epidermis MacBook Pro
- 1. Enumerate, differentiate and give the function of the different root systems observed. Tabulate your answers using the table provided. Type of root system Nature/Characteristic (primary/secondary) Function 1. 2. 3. 2. Describe the structural modifications and specialized functions performed by the different modified roots observed. Do this by completing the table below. Name of specimen Description of modified root Special function 1. beet 2. radish 3. sweet potato 4. corn 5. mangroove 6. succulent 7. baleteInstruction: Write TRUE or FALSE. 1. The lateral transport of water from a tracheary element to adjacent parenchyma cells are facilitated by perforation plates. 2. Some collenchyma cells are characterized by primary cell wall thickenings at the corners of the cell. 3. Nectaries have abundant phloem tissues. 4. Collenchyma cells near sieve tube element functions in the loading and unloading of sugars. 5. Sclerenchyma cells have thick primary cell walls. 6. The cell membrane regulates traffic of substances between the interior and exterior parts of the cell. 7. Hydathodes are associated with phloem tissues. 8. In the potato tuber section, the starch storing tissue are compose of parenchyma cells. 9. The chromosomes are always visible with the light (compound) microscope during the entire life cycle of the cell. 10. The cell wall is visibly seen under the light (compound) microscope, but vacuoles and cell membrane are not.Correctly label the following structures of a plant root tip. Place your cursor on the labels for more information. Vascular cylinder Zone of maturation Xylem Epidermis Protoderm Phloem Root hair Procambium Endodermis Cortex Zone of elongation Root cap Roof apical meristem Ground meristem Pericycle IM(4) 100 Reset Zoom
- Below is a series of pictures of the stem (x.s.) of a corn, Zea mays. 40x (x.s.) 100x (x.s.) Make a sketch of both magnifications (40x and 100x) and upload it here with the following structures labeled: epidermis, sclerenchyma (fibers), ground tissue parenchyma, vascular bundles, phloem, xylem, sieve tube members, companion cells, vessel elements, tracheidsDraw 1. ROOT TIP LONGITUDINAL CROSS SECTION – under medium power draw the whole tip. Label à Root cap, Zone of Cell Division, Zone of Elongation, Zone of Maturation, Apical Meristem. 2. ROOT CROSS SECTION – under medium power draw a pizza wedge to be able to view from the centre of the section out to the edge. Label à Epidermis, Endodermis, Cortex, Casparian Strip, Pericycle, and Vascular tissue 3. MONOCOT STEM CROSS SECTION – under high power focus the field of view on a vascular bundle and draw the vascular bundle and surrounding cells. Label à Xylem, Phloem, Vascular Bundle 4. 3 – YEAR OLD WOODY DICOT STEM CROSS SECTION – under low power draw a pizza wedge of the stem. Label à Primary xylem, Secondary xylem, Phloem, Cambium, Pith 5. LEAF CROSS SECTIONS –View and draw each of the cross sections under medium/high power. Label à Stomata, Vascular Bundle, Epidermis, Cuticle, Palisade Mesophyll, Spongy Mesophyll.IDENTIFICATION: Please identify the term being asked from numbers 1 to 10, including the one question below. 1. A waxy substance that covers the epidermis of aerial stems in most vascular plants.2. The kind of stem with both primary and secondary tissues present.3. The kind of stem with buds covered by scales.4. Traces left in the leaf scar containing vascular tissues.5. An embryonic shoot located at the tip of the stem.6. A specialized underground stem that can function for vegetative reproduction.7. The superficial tissue in a woody stem.8. The superficial tissue in herbaceous stems.9. The region of the stem where buds and leaves arise.10. What part of the epidermal tissue in herbaceous stem is likened to the lenticel? QUESTION: 1. Compare the internal anatomy of stems of xerophytes, mesophytes and hydrophytes. Relate differences to the nature/habit of the different plants.
- Instruction: FILL IN THE BLANKS 1. Vascular tissues are classified as _________________ tissue. That is, they are composed of more than one kind of cells and do not undergo differentiation. The xylem tissue in the primary plant body is called primary xylem and is produced specifically by the _____________ (meristem). 2. The large, highly vascularized leaves that function for photosynthesis in most vascular plants is called _____________, while the spore bearing leaves is called _________. 3. In the non vascular plants, the plant structure that functions for photosynthesis is the _______________, while the part that anchors the plant to the ground is the ________. 4. In the xylem, the perforation plates of ______________ is a counterpart of the ______________ of the sieve tube element in terms of structure and function. Sieve tube elements are the main conducting cells of the _______________ tissue. 5. In the flowering plants, the ______________ generation is large and often…Below is a series of pictures of monocot a leaf (x.s.), Zea mays. 40x (x.s.) Make a sketch of the 40x leaf cross section and upload it here with the following structures labeled: upper epidermis, bulliform cells (large cells on upper leaf surface), stomate, guard cells, mesophyll, xylem, phloem, bundle sheath cells, lower epidermis MacBook ProInstructions: MULTIPLE CHOICE Only choose the correct answer, and no need for an explanation. 1. Which region of the root in longitudinal section functions primarily for the absorption of water? A. meristematic region B. region of elongation C. root cap region D. region of maturation 2. Which of the following benefits to plant roots are derived from symbiotic Rhizobium bacteria? A. It provides plant resistance to drought. B. It is a source of nitrogen for roots. C. It provides plant resistance to pathogenic organisms D. It aids in nutrient absorption. 3. Which of the following is a characteristic of the endotrophic mycorrhizae root symbiont? A. Mycorrhizae invades the cytoplasm of root cortical cells. B. It forms an encrusting layer of hyphae called the mantle. C. Occur in the roots of pines and oaks trees. D. Mycorrhizae penetrates the root cortex but…