Assessment Statements 9.1: Plant Structure and Growth 9.1.1 Draw and label plan diagrams to show the distribution of tissues in the stem and leaf of a dicotyledonous plant. 9.1.2 Outline three differences between the structures of dicotyledonous and monocotyledonous plants. 9.1.3 Explain the relationship between the distribution of tissues in the leaf and the functions of these tissues. Tissues: (a) Phloem transports the products of photosynthesis (sugars, amino acids). (b) Xylem transports water and minerals into the leaf tissue from the stem and roots. (c) Epidermis produces a waxy cuticle for the conservation of water. (d) Palisade layer which is the main photosynthetic region. (e) Spongy layer creates the spaces and surfaces for the movement of water and gases. (f) Lower epidermis contains the stomatal pores which allow gas exchange with the leaf. The xylem and phloem tissues combine in the vascular tissue to provide support to the leaf. 9.1.4 Identify modifications of roots, stems...
Comments
Post a Comment