• Q & A

    Q & A OF ANATOMY OF FLOWERING PLANTS

    Q1) Name the associated structure of companion cell. Ans: Sieve tube cell Q2) Name an enucleated plant cell. Ans: Sieve tube cell Q3) Name the conductory elements of xylem. Ans: Tracheary elements- Tracheids and Vessels (tracheae)  Q4) What is periderm? Ans: Phellogen, Phellum and Phelloderm are collectively called as Periderm Q5) What is annual ring? Ans: Springwood and autumn wood that appear as alternate concentric rings constitute an annual ring.  Q6) Name the meristem which is responsible for growth in diameter of the cortex. Ans: Cork Cambium Q7) What is intrafascicular cambium? Ans: Cells of cambium present between primary xylem and primary phloem. Q8) What is interfascicular cambium? Ans: The…

  • Botony

    ANATOMY OF DICOTYLEDONOUS AND MONOCOTYLEDONOUS PLANTS

    For a better understanding of tissue organisation of roots, stems and leaves, it is convenient to study the transverse sections of the mature zones of these organs. Dicotyledonous Root Look at Figure, it shows the transverse section of the sunflower root. The internal tissue organisation is as follows: The outermost layer is epiblema. Many of the cells of epiblema protrude in the form of unicellular root hairs. The cortex consists of several layers of thin-walled parenchyma cells with intercellular spaces. The innermost layer of the cortex is called endodermis. It comprises a single layer of barrel-shaped cells without any intercellular spaces. The tangential, as well as radial walls of the…