general biology performance task number three, Assignments of Biology

Download general biology performance task number three and more Assignments Biology in PDF only on Docsity! EMILIO AGUINALDO COLLEGE Gov. D. MangubatAve.,Brgy. Burol Main, City of Dasmariñas, Cavite 4114, Philippines Tel. Nos. (046) 416-4341-42www.eac.edu.ph ISO 9001:2015 CERTIFIED QUALITY MANAGEMENT SYSTEM Fenella Faye A. Verzosa - Matimpiin PERFORMANCE TASK NO.3 TRANSPORT SYSTEM IN PLANTS Objective: To demonstrate how water travels in plants Materials:  Food coloring  Water  Beaker or glass bottle  Celery or white rose Procedure: 1. Add 100 mL of water into a beaker or bottle. 2. Add 6 drops of food coloring to the water. 3. Put the stick of celery or a white rose standing upright in the beaker or bottle with its stalk in the dyed water. 4. Leave it for 10 minutes. 5. Observe the migration of color into the plant. 6. Prepare a cross section on the stem of celery/white rose. Attach the picture of it and identify the colored structure. 5 points QF-ACD-036 (01.23.2020) Rev.1 EMILIO AGUINALDO COLLEGE Gov. D. MangubatAve.,Brgy. Burol Main, City of Dasmariñas, Cavite 4114, Philippines Tel. Nos. (046) 416-4341-42www.eac.edu.ph ISO 9001:2015 CERTIFIED QUALITY MANAGEMENT SYSTEM Guide Questions: 1. Why is transport system important in organisms? 5 points Transport system plays a very vital and crucial role in organisms. However, a transport system is absent in small animals and plants such as Amoeba, Spirogyra and Mucor because the transportation of gases, wastes, and food can simply be accomplished by diffusion and cytoplasmic streaming. The common characteristics of these organisms are that they are all very small and simple and have a large surface area to volume ratio. While in the bigger and more complex organisms, their surface area to volume ratios are small and they have a higher level of life activities and interrelationships among the body cells.  Under these conditions, the supply of oxygen, food and the removal of carbon dioxide and nitrogenous wastes into and from every cell are not fast enough to follow the high demand in metabolism just by diffusion and cytoplasmic streaming.  Therefore, a transport system in these organisms is required. 2. How does the xylem transport water throughout the plant? Explain the process briefly. 5 points Water is transported in the plant through the combined efforts of individual cells and the conductive tissues of the vascular system. Water from the soil enters the root hairs by moving along a water potential gradient and into the xylem through either the apoplast or symplast pathway. It is carried upward through the xylem by transpiration, and then passed into the leaves along another water potential gradient. In the leaf, some water is lost through evaporation from the stomata and the remaining fluid moves along a water potential gradient from the xylem into the phloem, where it is distributed along with the organic nutrients produced by photosynthesis throughout the plant. 3. What would happen if plants do not have these vascular tissues that conduct water? 5 points If plants do not have these vascular tissues, the xylem and the phloem, they will not able to transport pathways for water, nutrients, and signalling molecules and support a plant body against mechanical stresses. QF-ACD-036 (01.23.2020) Rev.1