This website uses cookies to ensure you have the best experience. Learn more

The Effect Of Stomata Density On The Midrib And Margin Of Woody Dicot Leaves

985 words - 4 pages

The Effect of Stomata Density on the Midrib and Margin of Woody Dicot Leaves

Tri Nguyen
March 25, 2014
BLY-122L-101
Lab Partner: Christina Pham


INTRODUCTION
Plants are relied heavily on their ability to exchange water and gases to keep life on Earth alive and well. Tiny, microscopic pores that are found on the surface of stems and leaves in plants are vital in order for this exchange to occur. These pores, or openings, are called stomata (Freeman, 2011). Stomata are mainly open when photosynthesis is occurring, which takes place during the day, and are closed at night. The stomata also tend to open and close in response to various stimuli and physiological states. Stomata density is the number of stomata per leaf area. Photosynthesis is certainly higher at the margin of the leaf rather than the center of the leaf; this is due to the fact that the edge of the leaf can be particularly active, mainly in cooler climate (USA, 2014). Therefore, toothed leaves are more prone to be able to exchange gases more relatively. Furthermore, leaf margin analysis can be used to determine what the climate is during a time period. Back in 150,000-year period, oxygen exchanging gasses within the fossil was documented, thus in this experiment LMA will be tested to see if more stomata are in the margin of the leaves.
In this experiment we will determine the amount of photosynthetic gases that are being exchanged to determine the uptake of carbon dioxide while water and oxygen is being released into the external atmosphere. This data will be used to determine the climate of the environment. In order to determine this, counting of smooth leaves, tooth leaves, and the stomata within the midrib and the edges of the leaves will be accounted for. The null hypothesis will conclude that there is no effect on the increase of stomata density within the center. The alternative hypothesis will conclude that there is an effect on the increase of stomata density within the center.
METHODS
In this experiment woody dicot leaves were used to determine the stomata density count within the leave margins and edges. In the first process the experimenter investigated the amount of fossil leaves to estimate the temperature from before and during the PETM. In the fossil leaves, the numbers of smooth leaves versus the toothed leaves were counted. After the numbers amount of smooth leaves and tooth leaves are counted, we used the Average Annual Temperature (AAT) to find the percent smooth and temperature of the samples from before and during. Next, in the investigation the actual Average Annual Temperature for mobile by predicting the percent smooth leaves that the class found in the camellia bush located near the SE corner of Life Science Building was accounted for (USA, 2014). Following that we used was the actual percent of smooth leaves to see accurately predict the AAT...

Find Another Essay On The Effect of Stomata Density on the Midrib and Margin of Woody Dicot Leaves

Diversity of micro fungi on the leaves of Hevea brasiliensis

987 words - 4 pages world’s most important rubber growing areas is the Peninsular Malaysia. Together with Sarawak and Sabah, the country produces almost 20% of the world’s natural rubber (International Rubber Research and Development, 2006). 1.2 Some of the micro fungi usually found on the leaves of Hevea brasiliensis According to Gazis and Chaverri (2010), there are more than 200 species of micro fungi found on the leaves of Hevea brasiliensis. Some examples are

A Comparison of the density of Ice and water

562 words - 2 pages 6 1.598 Questions:Did you expect the density of ice to be less than or greater than that of water? How did your experimental results compare with your expectation? I expected water to be more dense than ice because I knew that less dense substances tended to float on more dense substances, and I had seen icebergs float on the ocean and ice cubes float in a glass of water. Therefore I hypothesized that ice must be more dense.How did your value

Unruly Americans and the Origins of the Constitution by Woody Holton

1564 words - 6 pages incongruous views. Woody Holton, in Unruly Americans and the Origins of the Constitution, attempts to reveal how the Framers acted in favour of those who believed the Revolution had gone too far, while trying to appease the majority – American farmers – were in favour of more democracy. Holton exemplifies how these two conflicting beliefs played out in post-Revolutionary America by describing one of the farmers' rebellions that intimidated the

The Density Of An Unknown Liquid

829 words - 3 pages Density Of An Unknown Liquid Density Of An Unknown Liquid Lab (#100) Purpose : The labs purpose is to determine the density of an unknown liquid, which later on will hopefully help in the discovery of the liquid's identity.Hypothesis: I think that the unknown liquid number 100 is "Glycerol". My hypothesis is based on that the substance has a very oily texture, it is clear, has no smell, and it has a substantially high viscosity. I believe that

Organic Chemistiry: The Availabiltiy of Electron Density

1381 words - 6 pages prominent in conjugated system and it does not depend on reagent. By changing the electron density in a molecule it can decide the point of attack in molecule. Mesomeric effect can be positive +M (electron releasing) or it can be negative -M (electron withdrawing or attracting). +M effect example –M effect example In both example oxygen is more electronegative so pi electrons are displaced towards the oxygen atom. Electromeric Effect The

Blue Highways, Leaves of Grass and the Parkdale Library

1147 words - 5 pages of life and I was watching its eccentricities; he was growing cynical and I am still completely green. Yet to me in June 1999, our journeys seemed almost identical.  So as Least Heat Moon studied Leaves of Grass, I studied this road diary and tried to follow its winding philosophy.   It was the philosophy that came in handy  - especially the parts that Least Heat Moon picked up on his way from the book and from the people

Effect of Population Density in Sexual Development,

1362 words - 6 pages gametophytes of the wild type strain; but there were no male gametophytes at any population density in the Her 1 strain (Figure 1). Figure 1 Effect of population density on the percentage of male gametophytes in wild type and her1 Ceratopteris There was the same percentage of males, in both the wild type cultures treated her1 filtrate and the wild type cultures treated with no filtrate (Figure 2). There was the same percentage of males

The Accretions of Gander, Nashoba, and Avalon onto the Laurentian Margin Martha Parsons

2599 words - 10 pages Terrane (Hepburn and Kruckenberg, 2013). The oblique accretion caused regional transpression creating a shear zone at the tectonic boundary between the Avalon and Noshoba. Correlations of both the Avalon and Meguma Terranes are present in modern-day Europe indicating that accretion occurred prior to rifting. The Laurentia, Gander, Nashoba, Avalon, and Meguma terranes are located on the margin of the modern-day North American plate, thus there is

Correlation and Concept of GIS Application on Traffic Density

1464 words - 6 pages along road networks where the number of vehicles or pedestrians is high (Razzak, Khan & Jalal 2011, p. 644). To effectively control traffic density, the GIS experts may be required to cover large geographical areas along the roads and interface using many devices to manage the data obtained from various sources. Once the information is collected and analyzed, it is then passed to road users to inform them on which parts to avoid so that they can

A deconstruction of the meanings in the Purple Rose of Cairo, by Woody Allen

1184 words - 5 pages The two scenes extracted from The Purple Rose of Cairo, (Woody Allen, 1985), depict the major themes recurring throughout the entire film. The photography, editing and the sound present in the scenes are used to portray Tom Baxter's illusory film world, and Cecilia's miserable existence during the American depression of the 1930's. These techniques bring home to the viewer the constant shifting between perception and reality in Cecilia's

Biology Lab Report on the extraction of Chlorophyl from Plant Leaves

869 words - 3 pages AbstractThis experiment focused on extracting and separating pigments of Chloroplast. For the procedure green leaves were grinded in a mortar with some chemicals and the fluid was filtrated to use for further analysis. Stripes of this solution were put on a filter paper and later, after dried placed into a beacon of solvent. After this the chloroplast pigments were separated by the solvent into groups of more or less soluble pigments.AimHow many

Similar Essays

To Investigate Whether There Is A Difference In The Frequency Of Stomata Between Green And White Areas Of Leaves

2931 words - 12 pages To investigate whether there is a difference in the frequency of stomata between green and white areas of leavesPlanPredictionI predict that there will be a higher stomatal frequency present in the green areas of the leaves as the green colour indicates the presence of chloroplasts containing chlorophyll, which are essential for the process of photosynthesis. In contrast, the white areas of the same species of plant do not contain chlorophyll

Literature Review The Effect Of Particle Size Distribution On Packing Density, With Relation To Iron Ore

1248 words - 5 pages a higher packing density than the Gaussian system.1 There are certain properties of a PSD that may influence the packing density. The characteristic s that has the most influence on RCP is the skew of the distribution and polydispersity. Polydispersity is when the particles are not the same size, shape and mass. Figure 1: A diagram showing the two extreme forms of skewness.4 For a negative skew, shown in figure 1, the effect of

Effect Of Population Density Essay

1216 words - 5 pages living will cause inequality of incomes and lifestyles of skilled and unskilled workers. According to UNEP (2006), unemployment is a pressing concern in most cities in the South Asian countries because the formal economies are unable to absorb the enormous influx on workers. Also, rapid growth and affluence of urban centers and sluggish growth of rural economy causes wide disparities between rural and urban populations. This effect has become very

Diversity Of Micro Fungi On The Leaves Of Hevea Brasiliensis

1643 words - 7 pages with a drop of coagulated latex at the centre. These lesions can be spotted on the midrib and leaf blades. If this disease spreads, there is a possibility that the whole tree dies (Radziah and Hashim, 1990). Another famous pathogen of the rubber tree leaf is the Corynespora cassiicola which causes the Corynespora leaf disease (Pu et al, 2007). Both young and old leaves are affected by this disease. As a result, leaves fall all year round and