• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Effect on temperature on the rate of transpiration of HIbiscus sp

Extracts from this document...

Introduction

Design lab for the IB Internal Assessment Background information According to "ATMOSPHERIC SCIENCES", transpiration is the evaporation of water into the atmosphere from the leaves and stems of plants. Plants absorb soil water through their roots and this water can originate from deep in the soil. Plants pump the water up from the soil to deliver nutrients to their leaves. This pumping is driven by the evaporation of water through small pores called "stomates", which are found on the undersides of leaves. ASPECT 1 Research question The effect of temperature on the rate of transpiration of Hibiscus sp? Hypothesis If the temperature increases, then the rate of transpiration will increase as well as the rate of diffusion between the air spaces inside the leaf and the air outside. ...read more.

Middle

Light intensity Use the same light bulb and keep the distance between the light and the photometer constant in all the experiments. Potometer Use the same potometer in order to prevent any anomalies. Moreover, the water syringe and the tube placed in the potometer should also be the same, so the volume of the water can be kept constant. Time The time to equilibrate and the time in measuring the air bubbles should be the same for all the experiments. Materials - Potometer - Plant specimen - Incubator - Stopwatch - Ruler - Water Procedure 1. Make sure experimenters use the same room during the experiment, in order to have a constant wind speed and humidity. ...read more.

Conclusion

10. Repeat steps 1 to 9, changing the water temperature in the incubator to 15�C, 25�C, 35�C and 45�C. Ensure that all the other variables are kept constant ASPECT 3 Data Collection The effect of temperature on the rate of transpiration of Hibiscus sp Temperature of the water placed in the syringe as well as the potometer tube (�C) Distance moved by the air bubble (mm) Trials Average 1 2 3 5 15 25 35 45 1 1 "Transport and Water Relations." Skoool. 2007. Intel Corporation. <http://www.skoool.co.za/studynotes/science/id222.htm>. 2 "Transpiration." ATMOSPHERIC SCIENCES: University of Illinois at Urbana-Champaign. Department of Atmospheric Sciences (DAS) at University of Illinois at Urbana-Champaign. <http://ww2010.atmos.uiuc.edu/(gh)/guides/mtr/hyd/trsp.rxml>. ?? ?? ?? ?? Biology IBS October 13, 2008 Kyung Jin Kim Biology IBS October 09, 2008 Kyung Jin Kim Biology IBS October 09, 2008 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Biology essays

  1. Marked by a teacher

    Osmosis Internal Assessment (Biology)

    4 star(s)

    2 as well as the other values did, this is to be discused in the evaluation.* x. Evaluation Limiations and Weaknesses Effect on Investigation Suggestions for improvement Human error It was not possible for all of the potato strips to be put in the test tubes at the same time,

  2. internal assessment rate of transpiration

    � 0.01 Mass of entire apparatus, Newton (N) � 0.05 With light Without light Trial 1 Trial 2 Trial 1 Trial 2 0 0.90 0.85 0.75 0.90 15 0.90 0.85 0.70 0.85 30 0.90 0.84 0.70 0.85 45 0.90 0.84 0.70 0.82 Table 1; the mass of entire apparatus in SET A experiment for rate of transpiration of plant in different light intensity with respect to time.

  1. The effect of toliet cleaning products on E-coli ...

    NA 1.3.3- Method Part 1- Preparation of agar plates 1-Draw numbers on the agar plates (numbers correspond to a substance, eg- bleach) 2-Place e coli sample into an empty Petri dish 3-Use the glass spreader to pick up some e coli and spread it evenly over the surface of the

  2. Testing the effect of characteristics of leaves on the transpiration rate of * ...

    This process is so-called transpiration. On the underside of leaves, there are a number of structures of stomata, which look similar to a pore and they have what is called guard cells. In fact, stomata is the passage for intake of carbon dioxide and way out of oxygen.

  1. The effect of pvc piping on the breathing/heart rates of male year 12 students

    3 74 77 83 95 117 4 80 81 84 90 121 5 65 70 76 91 104 6 88 93 97 111 130 7 70 74 72 88 103 8 82 86 93 104 115 9 85 91 98 99 126 10 71 76 83 101 122 2.1.2- Raw

  2. Allelopathy. Open Investigation Will increasing the number of allelopathic sunflower plants effect the ...

    Wear on gloves 2. Record the number of leaves on each plant 3. Record the colour of leaves 4. Use a 300mm ruler to record the height of the plant 5. Take photos of the plants for record DATA COLLECTION AND PROCESSING Aspect 1 Recording Raw Data Table 2.0: This

  1. Biological rhythms. In order to say that such a clock exists, it is essential ...

    but the rhythm of cholesterol concentration has the opposite phase (peaking in the middle of the day). But can we say that circadian rhythms are only a consequence of internal clock, can't there be any effect of environment on the organism?

  2. bio lab - The Effect of Temperature (C) on the Rate of Diffusion in ...

    The amount of food colouring was controlled by dropping only one drop of food colouring in the test tube and as soon as the food colouring was dropped in the test tube, the stop watch was started. 7) The stop watch (±0.5s)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work