Investigation: What Conditions Affect Water Loss From Leaves?

693 words - 3 pages

Biology Investigation.What conditions affect water loss from leaves?Vikki Merriman 9YPredictionI predict that the higher the temperature, the more water the leaf will lose. In hotter atmospheres, more water will be evaporated off the leaf. So, if we put a leaf in an oven, more water will be lost than a leaf we put in a fridge.Scientific Background.Transpiration is the loss of water from the plant. Stomata close when there is little water coming up through the roots so that no water is lost through the leaves. This means that no Carbon Dioxide is getting in which therefore stops photosynthesis. The rate of transpiration is affected by the amount of light, the amount of air movement, the temperature and the humidity of the surrounding area. (More water is lost in hot, dry, windy, sunny conditions.)These two pictures show cross-sections of leaves and the most important parts are labelled.Apparatus15 petri dishes.15 leavesChemical balancesFridgeFreezerOvenThermometerTin FoilMethodI chose 15 leaves and measured their surface area and mass. We then numbered the leaves and put them in numbered petri dishes with the underside facing up. We then wrapped the petri dishes in tin foil so that the amount of light they got was constant otherwise this would have made it an unfair test.We then put the petri dishes containing the leaves in their designated places (three in each of the following - freezer, fridge, cupboard, window sill and oven). We also put a thermometer in with the petri dishes. Leaves 1, 2 and 3 went in the freezer. 4, 5 and 6 were in the fridge. 7, 8 and 9 went on the window sill. 10, 11 and 12 went in a cupboard and 13, 14 and 15 were placed in the oven.After approximately 24 hours we took all 15 petri dishes out and took the temperatures. We measured the mass of each of the leaves again so that we could tell if there had been a change in the mass.ResultsTemperatures - Freezer-2°CFridge9°COven48°CCupboard20°CWindow sill18°CLeaf No.Mass before (g)Mass after (g)Difference (g)Surface Area (cm")10.40.410.01 more5020.40.360.04 less4930.310.270.04 less37.540.320.330.01 more49.550.650.60.05 less6460.430.370.06...

Find Another Essay On Investigation: what conditions affect water loss from leaves?

Investigating the rate of electrolysis. An investigation to find out what factors affect the rate of electrolysis of a solution containing copper (II) ions

2805 words - 11 pages Investigating the rate of electrolysis.An investigation to find out what factors affect the rate of electrolysis of a solution containing copper (II) ions.PlanIt is known that by passing a constant electric current through a copper sulphate solution the passage of ions through this solution results in copper atoms being dissolved into the solution from the anode, which has a positive charge while positive copper, ions (cations) are also being

How does structure affect the bureaucracy? What lessons can we learn from theory about government and bureaucracy?

931 words - 4 pages concerns (Riley 109-111). The influence of public policy on agency can affect their selection of goals, or create too many goals, that bog down their ability to enact change. This is one reason, in my opinion, that people complain about the way that government agencies function, and also the negative connotation of “bureaucracy” is founded.The lessons to be learned from theories of structure and organization in government and bureaucracy

My essay,"What an Animal", uses Rick Bass's "Antlers" to exemplify humanities denial and loss of it's primal roots, and the confusion that results from interaction with the last vestiges of animal...

791 words - 3 pages My essay,"What an Animal", uses Rick Bass's "Antlers" to exemplify humanities denial and loss of it's primal roots, and the confusion that results from interaction with the last vestiges of animal instinct. At some point in history humankind invented the notion that we are separate or even superior to rest of the animal kingdom. For centuries since, humankind has denied our nature in an attempt to prove this theory. It is now considered

Transpiration

784 words - 3 pages of 0.8 ml water lose. If the cutting was to carry on in this situation it would've surely wilted and died. This would be because the fan is creating an area of low concentration of water molecules in that area; the plant would have to 'pull' up more water from the water tube through the xylem tissue causing an area of high concentration in the leaves. Which would of then caused rapid loss of water through the process of transpiration with the

International Sweaty Plants

2331 words - 10 pages and phloem. The xylem carries water from the roots to the leaves, whereas, the phloem carries dissolved foods from the leaves to all other areas. When mineral-enriched water is taken into a plant by its roots, it travels up the stem, through the xylem, to the leaves. In the leaves some of the water is released through tiny holes called stomata on the underside of the leaves. This type of water loss is known as transpiration. As the outer leaf

The Effect of Three Conventional Cooking Methods on Vitamin C in Spinach

3577 words - 14 pages steaming)Note: Fill the burette with potassium iodate solution when necessary(University of Canterbury, 2012)Discussion:This investigation was aimed at answering the research question: what effect will conventional cooking methods have on the ascorbic acid levels in spinach? This was accomplished by titrating a control of raw spinach juice for ascorbic acid and then titrating spinach juice derived from boiled, microwaved and steamed spinach for

Impact of Global Warming on Coastal Wetlands

1655 words - 7 pages wetland soils and species, and she organized the material clearly and effectively. What I liked particularly about this review was that it moved logically from the effects of flooding and salinity on wetland soils to the effects on the plants growing there to the overall effects on the wetland, both in terms of species composition and, more drastically, wetland survival. The tie-in with global climate change puts this local chain of cause and

Algae Research

1195 words - 5 pages posses roots, stems or leaves, that the majority of plants posses. However, algae have the ability to utilise photosynthesis as means of energy, therefore categorizing it as a plant.Algal blooms occur naturally in both fresh and brackish water. The growth of algae, like the majority of plant life, is dependent on sunlight and sufficient nutrients, however when the conditions for algae are right excessive algal growth occurs, known as 'algal bloom

Investigation of Transpiration

1118 words - 4 pages Investigation of Transpiration Transpiration is the loss of water from a plant by evaporation. Water is essential for plants as it is required for photosynthesis to produce glucose; all organisms derive their energy from the oxidation of glucose, minerals and ions are dissolved in water and bring them from the roots to other plant tissue that require the minerals. Also, water keeps the plant cool. The plant

Investigating the Rate of Transpiration in a Mesophyte Plant

1327 words - 5 pages transpiration while temperature might have different effects on it. There are also several factors which affect the transpiration rate in an indirect way, by controlling the stomatal aperture. Although there is some evaporation from the cuticle, water, as mentioned above, is mostly lost from the stomatal pores. Therefore light intensity, carbon dioxide/oxygen ratio, water stress conditions and the biological clock effect are

Maintaining a Balance

3797 words - 15 pages plantstranspire at a greater rate in comparison to normal plants, however, there is a lot of water loss. Because of this, their leaves have a reduced surface area. This reduces the exposure of the plants to the sun.water storage tissues in the roots.Students:1.10. identify data sources, plan, choose equipment or resources and perform a first-hand investigation to test the effect of:increased temperaturechange in pHchange in substrate concentrations on the

Similar Essays

An Investigation To Show How Water Temperature And Alcohol Concentration Affect Membrane Permeability

1290 words - 5 pages An Investigation to Show How Water Temperature and Alcohol Concentration Affect Membrane Permeability Aim The aim of the experiment is to show the cell’s membrane permeability is affected by being placed into different temperatures of water. Also the effect of placing beetroot in to different concentrations of alcohol. Beetroot cells contain a red sap, which leaks out of the cells if their membranes are damaged or altered. Cell

An Investigation Of Photosynthetic Electron Transport Of Chloroplasts From Silverbeet Leaves

1075 words - 4 pages An Investigation of Photosynthetic Electron Transport of Chloroplasts from Silverbeet LeavesIntroductionPhotosynthesis is the process by which plants use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things. The conversion of unusable sunlight energy into usable chemical energy is associated with the actions of the green pigment, chlorophyll. Light Dependent Reactions are

To What Extent Can Working Conditions Affect Well Being In The Workplace?

1643 words - 7 pages Globalization and economic development have dramatically altered working conditions over the last decade (Towers Watson, 2014). Restructuring, a higher workload, increased use of automation and technology and the speed of change have had a significant impact on the organization as well as its employees and their well-being (Clark, 2011). Working conditions refer to the organizational structure and environment such as terms of employment, hours

The Affect Of Revolutionary Political Ideas And Conditions On Modern World History From World War I To The 1970s

1724 words - 7 pages Modern World HistoryExamQuestion: Why and how did revolutionary political conditions exercise such a powerful influence over world history in the period from roughly World War I until the early 1970s?Throughout history, revolutions have shaped countries into their present forms. As the world became more interconnected, these changes have affected all countries not just those that were changed through rebellion. Revolution is a very powerful