Plant Structure and Function

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Plant structure and function Aug. 4, 2005 Summary In the lab exercise regarding plant structure and function, we examined slides containing the different kinds of roots (monocot, dicot). We labeled the parts and pointed out the different roles of each in the plant structure. Also, we examined monocot stems and dicot stems in order to familiarize ourselves with its external and internal structures. We sketched and labeled the parts of the stem and looked closely at the positions of each part. In the last part of the lab, we classified leaves into different kinds according to their leaf venation, bases of leaves, and apices of leaves. As an additional exercise, we sketched 20 animals and classified them according to phylum and class. We were also able to discover the scientific and common names of the animals. Overall, the exercises we did enabled us to familiarize ourselves with plant structure thus, gaining a better understanding for plant life and its importance. Abbreviatons LPO- Low power objective HPO- High power objective Introduction How do plants resist being uprooted during typhoons? How do they absorb water? The answer lies on a particular plant structure, which is called the root. Basically, a monocot and a dicot root differ but also have common parts like the xylem and the phloem. Through examining the roots using the light microscope, the students would hopefully be able to understand how the root is designed to perform its vital functions. A root tip basically has 4 main regions, the root cap, the meristematic region, the region of cell elongation, and the region of cell differentiation. These parts are all essential for a root to function properly, thus further stressing its importance in t... ... middle of paper ... ...icot stem. Label and sketch its parts. Take note of the position of the vascular bundle. Step 6 Examine a young woody dicot stem. Compare it with the young herbaceous dicot stem. What changes occurred? Label and sketch its parts. Step 7 Examine an old, woody dicot stem. Sketch and label its parts. Compare the structure with the other dicot stems( young herbaceous and young woody). Step 8 Examine a leaf cross section. Sketch and label its parts. Take note of the position of xylem and phloem and the other parts of the plant leaf. Step 9 Examine the different kinds of leaves. Classify each according to the kind of leaf blades, kinds of leaf veins, Phyllotaxy, and leaf blade morphology. Step 10 Get three leaves. Enumerate their classification according to form of leaves, base of leaves and apices of leaves. Results Refer to data sheet
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