Transverse Sections: Stems, Roots & Leaves | OCR A Level Biology ...
2022年6月2日 · When drawing tissue plan diagrams (which is common in the practical paper 3) you need to: Read the instructions carefully; Draw a large diagram; Use a sharp pencil and do not shade (including the nucleus) Use clear, continuous lines
Plant Transverse Sections | CIE International A Level Biology …
2024年2月19日 · Plants have a vascular system which involves a network of vessels (vascular tissue) running through the leaves, stem and roots. These three parts are the main organs involved in transport. Tissue plan diagrams of a dicotyledonous leaf, stem and root. Step 1: Calculate the 1 eyepiece graticule unit.
Low-power plan diagrams - Cambridge International as and a
Your low-power plan shows where the cells are located. Photomicrographs and diagrams of representative cells from the tissues of dicotyledonous stems, roots and leaves are shown in Figures 7.9 to 7.13. A brief description of some of the tissues you will be examining is given below to help you to understand their structure.
IB Biology Notes - 9.1 Plant structure and growth - IB Guides
The stem extends into the ground and forms enlarged, swollen structures which we call stem tubers. Stem tubers are used to store nutrients and therefore allow the plant to survive winter as well as other adverse conditions. They also serve as a mean of asexual reproduction as new plants develop from these stem tubers.
Internal Structure of Stem (With Diagram) - Biology Discussion
The below mentioned article provides an outline of internal structure of stem of both dicotyledons and monocotyledons type. The embryo develops into a plant with root-stem axis and the appendages. In fact, three important organs of a plant are the stem, the leaves and the root.
Stems - ib.bioninja.com.au
The stem of a plant functions to support and elevate the leaves, flowers and fruits (promoting photosynthesis and seed dispersal) Material is transported between the leaves and the roots via vascular bundles that traverse the length of the stem
(a) Observe all the different tissues in the stem on J1. (i) Draw a large plan diagram of a quarter of the stem on J1 , shown by the shaded area in Fig. 2.1.
(i) Draw a large plan diagram from the selected field of view which shows: • part of the epidermis • only two smaller outer vascular bundles • only one larger inner vascular bundle • any other observable tissues. You are expected to draw the correct shape and …
Plant Transverse Sections | CIE AS Biology Revision Notes 2025
2023年10月25日 · These three parts are the main organs involved in transport. Tissue plan diagrams of a dicotyledonous leaf, stem and root. The micrograph below shows a transverse section of root tissue. Draw a plan diagram of this section of root tissue. Electron micrograph of transverse root tissue. Step 1 Draw the outlines of each section.
(a) (i) Draw a large plan diagram of the sector of the stem on N1, shown by the shaded area in Fig. 2.1. Use one ruled label line and label to identify the xylem.