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- Guard cells control the size of the stomata so that the leaf does not lose too much water in hot, windy or dry conditions. The lower part of the leaf is a spongy layer with loose-fitting cells. These let carbon dioxide reach the other cells in the leaf, and also let the oxygen produced in photosynthesis leave the leaf easily.
www.bbc.co.uk/bitesize/guides/zb9fy9q/revision/3Adaptations of the leaf - Photosynthesis - 3rd level Science ...
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The structure of a leaf has adaptations so that it can carry out. photosynthesis. A chemical process used by plants to make glucose and oxygen from carbon dioxide and water, using light...
- Introduction
- External Leaf Structure
- Leaf Structure Observations
- Compound Microscopy - Bright Field
- Requirements
- Procedure
- Observations
- Leaf Cross Section Under The Microscope
- Observation
- Conclusion
Like any other multicellular living thing, leaf structure is made up of layers of cells. Viewing the leaf under the microscope shows different typesof cells that serve various functions. Using a microscope, it's possible toview and identify these cells and how they are arranged (epidermal cells,spongy cells etc). To do this a compound microscope is...
To view the external leaf structure, thefollowing will be required: 1. A stereo microscope 2. A leaf (try finding a leafthat is not dry or decaying) Observation 1 (leaf surface) Procedure 1. Place a small leaf on themicroscope (stereomicroscope) 1. Start with low power andincrease gradually and record your observation ** See more info on Chloroplas...
When viewing the surface of the leaf under thestereo microscope, students will be able to clearly see hair-like structures(trichome) on the leaf surface that serve a number of functions ranging fromtrapping insects to trapping water/moisture. Students will also observe theintricate leaf veins (vascular bundles) running across the surface of the lea...
When viewing the cells of a leaf, this should be done using a compound microscope. The procedure used allows for the stomata to be seen.
A compound microscopeTweezersA needleGlass slides and cover slipsHaving obtained a leaf, carefully fold it andusing a pair of tweezers, peel off the lower surface of the leaf(epidermal membranous transparent layer) Place the peel into a watch glass that containsdistilled water Remove the epidermal skin from the watch glassand transfer to another watch glass with safranin for about 30 seconds (fewdrops of safrani...
When viewed under the microscope, it's possibleto see the epidermal cells that tend to be irregular. In addition to theepidermal cells, one will also see the leaf spores (stomata) in between theepidermal cells. Typically, the stomata are bean shaped and will appear denser(darker) under the microscope. Under high magnification, students can differen...
Whereas the transparent thin epidermal skin of the leaf allows the student to observe the stomata and other epidermal cells, it would be important to prepare a cross section of a leaf to observe the arrange of cells inside the leaf structure.
Under high magnification, students will be ableto view the internal structure of the leaf. This includes the upper and lower epidermalcells (flattened cells) with the mesophyll layer in between. Here, the mesophyllsection of the leaf contains two different type of cells including the palisademesophyll (elongated cells) and the spongy mesophyll (sph...
Using the stereo and compound microscope,students can view different parts and structures of a leaf. These include boththe external and internal structures. With a wide range of leafs available,students can obtain different types of leaves (thick and long leaves etc) andcompare the appearance of such structures as the stomata, shape and arrangement...
- 2 min
Dec 2, 2014 · The leaf is the organ in a plant specially adapted for photosynthesis. You need to understand the structure of the tissues in a leaf together with their functions. Upper Epidermis: this is the tissue on the upper surface of the leaf.
The table below describes the different structures in a leaf and their functions. Leaf Structures Table. Diagram showing the cross-section of a leaf. The specialised cells in leaves have adaptive features which allow them to carry out a particular function in the plant.
Oct 31, 2023 · The xylem consists of tracheids and vessels, which transport water and minerals to the leaves. The phloem transports the photosynthetic products from the leaf to the other parts of the plant. A single vascular bundle, no matter how large or small, always contains both xylem and phloem tissues.
Dec 11, 2015 · In daylight or high humidity, when CO 2 is needed for photosynthesis and water loss can be minimized, the guard cells use active transport to alter the concentration of hydrogen and potassium ions so that water flows into the cells. Pressure builds up, and expands the cells to open the pores.
Describe the microscope internal structure of leaves, including the epidermis, mesophyll, and vascular bundles. Compare the adaptations of mesophytic, hydrophytic, and xerophytic leaves. Identify the unique features of pine and corn leaves. Compare the structures of sun and shade leaves.
