Study_Objective_Questions__23_plants - Study Objective...

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Study Objective Questions #23 Chapter 35 1. What are the two types of meristems? Which type of growth is associated with which meristem? What are the primary meristems? What does each primary meristem produce? What are the two cambiums and what do they produce? Meristems are actively dividing undifferentiated tissues responsible for primary and secondary growth. Apical meristems – responsible for primary growth, which is increasing length. Lateral meristems – responsible for secondary growth, which is increasing width. Primary Meristems: Protoderm – produces the epidermis Procambium – produces primary vascular tissues (xylem and phloem) Ground meristem – which produces the ground tissue The two cambiums are cork cambium and vascular cambium and they are from the lateral meristem. The cork cambium produces the cork cells of the outer bark and the vascular cambium produces the secondary vascular tissue. 2. List and briefly describe the three basic types of adult plant tissue. Dermal Tissue – composed of the epidermis, one cell layer thick, forms the protective outer covering of the plant, may be covered with a cuticle, barks forms the hard protective layer and is also considered dermal Ground Tissue – thin-walled parenchyma cells that are more or less spherical, they push up against each other and end up having 11 to 17 sides, may live for many years they function in storage, photosynthesis, and secretion Vascular Tissue – two kinds of conducting tissues: xylem, which conducts water and dissolved minerals and phloem, which conducts the carbohydrates – mainly sucrose- used by plants for food, transports hormones, amino acids, and other substances necessary for plant growth 3. Draw and label a plant body. Look on page 732 4. Define and briefly describe primary and secondary plant growth. Primary plant growth – plays an important role in establishing the basic body plan of the organism, results from cell division at the apical meristem at the tip of the plant, making the shoot longer Secondary plant growth – results from cell division at the lateral meristem in a cylinder encasing the shoot, and increases the shoot’s girth, led to the evolution of trees 5. Define parenchyma, chlorenchyma, collenchyma, sclerenchyma and lignin.
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This note was uploaded on 04/17/2008 for the course HUMANITIES 111 taught by Professor Blume during the Winter '08 term at Union.

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Study_Objective_Questions__23_plants - Study Objective...

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