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The Effects of Chickpea Seeds When Increased After It Reaches Carrying Capacity

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ENVIRONMENTAL SYSTEM AND SOCIETIES SL

INTERNAL ASSESSMENT

CARRYING CAPACITY

Candidate Name: Raj Raskar

Exam Session: May 2015

Name of School: Symbiosis International School

School Code: 002798

Title: 

Carrying Capacity

Research Question:

The effect of the Chickpea seeds when it’s increased after it reaches at its carrying capacity?

Hypothesis:

 The chickpea seeds will germinate more where the numbers of seeds are less as the number of seeds increases in the Petri-dish the germination of the seeds will slow down.

Background: 

Carrying capacity is the maximum number of individuals of a given species that an area's resources can sustain indefinitely without significantly depleting or degrading those resources. Chickpea seeds are widely grown in India and are the best in well drained loamy to sandy soil. Sandy soil is appropriate for chickpea as its well drained and has appropriate mixture of all the nutrients.

Variables:

Independent variable

Dependent variable

Controlled variable

-The type of seed (chickpea seeds)

-The number of seeds germinated in each petri dish

-Amount of water poured in each petri dish

-Type of soil - sand

-Amount of soil content.

-Types of seeds used- chickpea seeds

Methods to control variables:

Variable

Methods to control

Amount of water

15ml of water in all the 5 petri dishes

Type of soil used

sand is used for all the petri dishes

Amount of soil content

50gm of sand in each petri dish

Number of seeds used in each petri dish

30 seeds in 1st petri dish

60 seeds in 2nd petri dish

90 seeds in 3rd petri dish

 120 seeds in 4th petri dish

150 seeds in 5th petri dish

Apparatus:

  1. 5 petri dishes.
  2. 250gm of sand soil.
  3. 450 chickpea seeds.
  4. Measuring glass cylinder.
  5. Weighing scale.
  6. 15ml of water poured on each day.

Procedure:

  1. Use 50gm of sand soil in all the 5 petri dishes.
  2. Use 30 seeds in 1st petri dish and mark it as 1.
  3. Use 60 seeds in 2nd petri dish and mark it as 2.
  4. Use 90 seeds in 3rd petri dish and mark it as 3.
  5. Use 120 seeds in 4th petri dish and mark it as 4.
  6. Use 150 seeds in 5th petri dish and mark it as 5.
  7. Pour 15ml of water in all the 5 petri dishes using a measuring cylinder.
  8. Measure the rate of growth of the seeds in all the 5 petri dishes and make it as your record as well as note it down in the observation table.

Observation table:

Number of days

Petridish1

Petridish2

Petridish3

Petridish4

Petridish5

30 seeds

60 seeds

90 seeds

120 seeds

150 seeds

Day 1

0

0

0

0

0

Day 2

5

17

14

22

25

Day 3

5

17

18

26

29

Day 4

7

19

18

28

29

Graphical representation:

[pic 1]

Discussion- my readings show that; the more number of seeds in the petridish has been germinated faster than the less number of seeds present in all other petridishes. My observations during the experiment were very much clear to understand and note down the results as the less number of seeds were taking more time to germinate. On the other hand the more number of seeds present in the petridishes could germinate very quickly.

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