Downloaded 124 times
Uploaded byNadine Uy
Experiment 3 percent composition in plants
This document discusses determining the percent composition of water, organic matter, and inorganic matter in plants. It describes how fresh, dry, and ash weights of plant samples are measured to calculate these percentages. Tables of results show the average percentages across replicates for different plant species, with water generally the highest at around 70-75%, organic matter next at around 25%, and inorganic matter the lowest at around 3-5%. The roles and importance of water, organic compounds, and mineral nutrients in plant physiology are also outlined.
More Related Content
Experiment 3 percent composition in plants
- 1. Percent Composition in Plants Basilio,Chavez, Escudero, Evidente, Lirio
- 2. Introduction Plants are composedof water, organic and inorganic matter. Fresh plant matter is about 80-95% water. Water is the principal constituent of plants and an essential component for the maintenance of life, growth and development.
- 3. Introduction Organic matter Hydrogen, Oxygen, Carbon Drawn from the soil and the air, but generally through the absorption done by the roots. Inorganic Matter Phosphorus, Sulfur, Potassium, Calcium, Magnesium, Silicon and other elements. From the soil
- 4. Introduction Determine the percentcomposition of water, organic and inorganic constituents of plants by the determination of fresh, dry and ash weight.
- 5. Methodology two replicates, onespecies (flowering plant) wash &blot get fresh weight (record) wrap in paper (label) dry in oven (not >80ºC) get dry weight (record)
- 6. Methodology cut dried specimen putin pre-weighed crucible place in muffle furnace (550ºF) cool & weigh ash content
- 7. Results Table 1: PercentComposition of Water, Organic and Inorganic Constituents in Vernonia sp.
- 8. Results Table 2: PercentComposition of Water, Organic and Inorganic Constituents in Catharanthus roseus.
- 9. Results Table 3: PercentComposition of Water, Organic and Inorganic Constituents in Catharanthus roseus.
- 10. Results Table 4: PercentComposition of Water, Organic and Inorganic Constituents in Tridax sp.
- 11. Discussion Chemicals and substancesthat function to maintain an internal balance in the body compose the cells and tissues of living organisms. water, organic matter, and inorganic matter
- 12. Water Depending on thetype of plant, the water content in most fruits and vegetables accounts for approximately 70 to 95 percent of their weight.
- 13. Parameter Replicate 1 Replicate 2 Average Fresh weight (FW), gms 3.7 2.0 2.85 Dry weight (DW), gms 1 0.6 0.8 Ash weight (AW), gms 0.1 0.1 0.1 Percent water {(FW- 72.97% 70% 71.49% DW)/FW} X100 Percent dry matter 27.03% 30% 28.52% {(DW/FW)X100} Percent inorganic matter 2.703% 5% 3.85% (AW/FW)X100 Percent organic matter 24.33% 25% 24.67% %DW-%AW
- 14. Water is themajor component of living cells and constitutes more than 90% of protoplasm by volume and weight •medium for the conduction and distribution of nutrients and other ions • maintaining turgor pressure
- 15. Vernonia sp. A herbaceousmesophyte Source: http://upload.wikimedia.org/wikipedia/c ommons/3/3d/Vernonia_cinerea.jpg
- 16. Organic matter Carbon-containing compounds •carbohydrates, • lipids, • nucleic acids, and •proteins
- 17. Parameter Replicate 1 Replicate 2 Average Fresh weight (FW), gms 3.7 2.0 2.85 Dry weight (DW), gms 1 0.6 0.8 Ash weight (AW), gms 0.1 0.1 0.1 Percent water {(FW- 72.97% 70% 71.49% DW)/FW} X100 Percent dry matter 27.03% 30% 28.52% {(DW/FW)X100} Percent inorganic matter 2.703% 5% 3.85% (AW/FW)X100 Percent organic matter 24.33% 25% 24.67% %DW-%AW
- 18. Pathway of ligninbiosynthesis in angiosperm trees. Source: http://www.nature.com/nbt/journal/v20/n6/fig_tab/nbt0602-557_F1.html
- 20.
- 21. Inorganic matter Macronutrients Micronutrients
- 22. Parameter Replicate 1 Replicate 2 Average Fresh weight (FW), gms 3.7 2.0 2.85 Dry weight (DW), gms 1 0.6 0.8 Ash weight (AW), gms 0.1 0.1 0.1 Percent water {(FW- 72.97% 70% 71.49% DW)/FW} X100 Percent dry matter 27.03% 30% 28.52% {(DW/FW)X100} Percent inorganic matter 2.703% 5% 3.85% (AW/FW)X100 Percent organic matter 24.33% 25% 24.67% %DW-%AW
- 24. Conclusion Why study thepercent composition of plants understand physiology and morphology environmental conditions health condition
- 25. Conclusion Generally, plants arecomposed of: Water organic matter inorganic matter
- 26. Conclusion Vernonia sp. (Asteraceae) water (71.49%) > organic matter (24.67%) > inorganic matter (3.85%)
Editor's Notes
- #13 Singkamas, Pachyrhizuserosus86-90% waterWatermelon, ‘melon’, apples, apricot, celery carrots, berries
- #15 Turgor pressure = keeps plants to remain upright and in shape
- #16 Mesophytic plants havewater rather than organic matter in high amounts.
- #17 Cellulose, the basic structural component of plant cell walls, is a polysaccharide that composes roughly 33% of all vegetable matter.
- #19 carbohydrates that function as structural materials for the plant also include hemicelluloses, pectin, and lignin
- #20 Lipids and proteins compose the cell’s plasma membranePreteins also serve tofacilitate basic physiological functions of the plantchannels in regulating water and ions that enter and leave the cellWhile lipids are present as cutin and suberin
- #21 Nucleic acids are present as DNA and RNA
- #22 Macro – present in high quantities; Micro – present in low amounts
- #24 Seventy percent of total ash content is a mixture of calcium and phosphorus and 1% is attributed to wet body mass (Hallare, n.d.). - Mainly function as cofactors in certain biochemical reactions