Biology Lab Report Matriculation Experiment 2 ❲SIMPLE ✔❳
Be honest. Do not just say "I did everything wrong." Suggest scientific fixes.
: Present in the center of dicot stems and monocot roots, but absent in monocot stems.
| Cell Type | Stain Used | Magnification | Structures Observed | Drawing Reference | | :--- | :--- | :--- | :--- | :--- | | Human cheek cell | Methylene blue | 400x (High power) | Cell membrane (irregular shape), nucleus (dark blue, central or slightly off-center), cytoplasm (light blue) | Figure 1 | | Onion epidermal cell | Iodine solution | 400x (High power) | Cell wall (rectangular, rigid), nucleus (small, spherical), large central vacuole (unstained/clear), cytoplasm (thin layer) | Figure 2 | | Rhoeo leaf cell (Turgid) | None (natural pigment) | 100x | Purple contents filling the cell; nucleus visible; cell wall distinct. | Figure 3 | | Rhoeo leaf cell (Plasmolyzed) | None (natural pigment) | 100x | Purple protoplast has shrunk into a central sphere; clear space between protoplast and cell wall. | Figure 4 | biology lab report matriculation experiment 2
Use the low-power objective lens (4x or 10x) to locate the general arrangement of tissues.
Draw and label the observed tissues, noting the differences between vascular bundles in monocots (scattered) and dicots (arranged in a ring). 5. Results (Observation Table) Tissue Type Cell Shape Wall Thickness Function Noted Parenchyma Isodiametric/Thin Food storage Collenchyma Unevenly thickened Flexible support Xylem Tubular/Vessel-like Thick/Lignified Water transport Phloem Sieve tubes Organic solute transport 6. Discussion Be honest
List everything used. Be specific.
Explain that this experiment validates the and the structure-function relationship (e.g., cell wall provides support; irregular shape allows cheek cells to stretch). | Cell Type | Stain Used | Magnification
Draw and label the observed tissues, including the epidermis, parenchyma, collenchyma, sclerenchyma, xylem, and phloem. You should include scientific drawings of:
To compare the structure and distribution of tissues in and dicot stems and roots.