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  • 8/13/2019 Biology Suresh

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  • 8/13/2019 Biology Suresh

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    I wish to expressmy deep gratitude and sinc

    ere thanks to our principal Mrs.Lalitha Thia

    garagan for providing the best facilities and

    enviroment to carry out this project success

    fully.

    This project would not have been feasible w

    ithout the proper guidence of my Biology te

    acher Mrs.Ambika who helped me to choos

    e this project and who guided me throughou

    t this project in every possible way

    I also taken pleasure in acknowledging my

    parents for their support

    I also thank our Biology lab attender Mrs.Parvathy in herm willingness in providing us

    with necessary lab equipments.I

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    Aim

    Theory

    Experiment Light

    Experiment soundObservation

    Result

    Precautions

    Bibliography

  • 8/13/2019 Biology Suresh

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    To find the effect of music and light on the growt

    h of a plant

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    Several studies were conducted to find the effect

    of music on plant growth and Dr. T. C. Singh c

    arried out one of these earlier research.

    In 1962, Dr. T. C. Singh, head of the Botany De

    partment at Annamalia University, India, experimented with the effect of musical sounds on the

    growth rate of plants and found that balsam plan

    ts accelerated by 20% in height and 72% in bio

    mass when exposed to music. He initially experi

    mented with classical music. Later, he experime

    nted with raga music (type of music that improvises on a set of rhythms and notes) played on flu

    te, violin, harmonium and reena, an Indian instr

    ument; and found to have similar effects.

    He repeated his experiment with field crops usin

    g a particular type of ragaplayed through a gram

    ophone and loudspeakers. The size of crops incr

    eased to between 25 to 60% above the regional

    average.

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    The absorption spectra (top) and the action spec

    tra (middle) demonstrate which wavelenghts of

    light are most important for photosynthesis. Th

    e absorption spectra shows that green light is ab

    sorbed the least by all three pigments (the peaks

    of the lines represent the most important wavel

    engths for photosynthesis for each pigment). T

    he action spectra shows the rate of photosynthes

    is at different wavelentghts of light, which com

    bines the activity of all of the pigments present

    and is lowest in the green/yellow wavelenghts.

    The bottom image summarizes the classic 1883experiment by Engelmann. Engelmann expose

    d segments filamentous algae to different wavel

    engths of light and mixed bacteria in the solutio

    n that cluster near oxygen sources. Engelmann

    was able to determine the wavelengths of light t

    hat resulted in the highest rates of photosynthesi

    s based on the segments that had the largest am

    ounts of bacteria clusters around the algae.

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    Then I built four boxes out of plywood and I fitted sound proof foam insulation. I plant

    ed the fast plant seeds in black planters and put together the reservoirs for watering. Iput a planter and reservoir in each box with a CD player out front and headphones insi

    de with the plants. Everyday for twenty days I checked on the plants and recorded thei

    r growth.

    I built three boxes with 5 different colored transparencies on top and front. I planted s

    eeds about inch into the pots and let them grow. I recorded measurements every 2-

    3 days. The Plants were shown different colored light. There were 3 different plants for

    each different colored light. I measured overall height and leaf width for the tallest an

    d best plant of each color.

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    Day Red Yello Blue Green

    5 3 3 3 3

    10 5.1 4.5 3.5 3.2

    15 6.3 5.5 4.2 3.7

    20 8.3 7.5 5 4.2

    25 11.2 9.8 6 4.7

    30 13.7 11.5 7.3 5

    35 16.1 14.3 8.5 5.5

    40 17.6 15 9 6

    45 18.4 16.2 10.5 6.4

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    Day Classical Silence Rock

    5 3 3 3

    10 4 3.4 3.2

    15 5.3 4 3.7

    20 6.7 5.2 4

    25 8.7 6 4.4

    30 9.6 6.7 4.9

    35 10.4 8 5.5

    40 11 8.6 5.9

    45 11.6 9.3 6

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    It is visible from the graph and observation that

    Red light gives the best result where it had the lon

    gest length

    In green light it gave the poor result

    Yellow gave the nearest height to that of red light

    Blue gave the moderate height

    In the case of music

    The plant grown in the presence of classical music

    (Nithyashree Mahadevan concerts)gave the best re

    sults.The second best was observed with silence.L

    east performance was given by Rock music.

    From these we can conclude classical and red give

    big growth.Green and Rock gives the least result.

    Blue and silence gives the healthy growth

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    Make sure that the plants are away from their

    enemies

    Do provide sufficient space

    Cut off the weedsProvide the same resouces for all the plants

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    www.google.com

    Cbse Ncert class 11 text book

    molarity of different volume

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    Amount of salt taken : 58.5 g

    Amount of water added :10 ml

    Molarity of the solution : 10M

    0 10

    1.1 9

    1.4 8

    1.7 7

    2.4 6

    3.4 5

    5 4

    8.3 3

    16.7 2

    50 1

    Amount of salt taken : 35 gAmount of water added :10ml

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    Molarity of the solution : 10M

    0 10

    1.1 9

    1.4 81.7 7

    2.4 6

    3.4 5

    5 4

    8.3 3

    16.7 2

    50 1

    By following procedure we get solution of differe

    nt concendration.

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    conc Resistance Bal.length Resistance Conductivity

    1 100 16 20 50

    2 100 21 28 35

    3 100 28 40 25

    4 100 33 50 20

    5 100 40 66.6 15

    6 100 50 100 10

    7 100 55 122 6

    8 100 58.67 142 7

    9 100 66.6 200 5

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    conc Resistance Bal.length Resistance Conductivity

    100 20 25 40

    2 100 35 55.5 18

    3 100 38 62.5 16

    4 100 45 83.5 12

    5 100 50 100 10

    6 100 58 142 7

    7 100 62 166 6

    8 100 66 200 5

    9 100 71 500 4