The Effects of Chickpea Seeds When Increased After It Reaches Carrying Capacity
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:
- 5 petri dishes.
- 250gm of sand soil.
- 450 chickpea seeds.
- Measuring glass cylinder.
- Weighing scale.
- 15ml of water poured on each day.
Procedure:
- Use 50gm of sand soil in all the 5 petri dishes.
- Use 30 seeds in 1st petri dish and mark it as 1.
- Use 60 seeds in 2nd petri dish and mark it as 2.
- Use 90 seeds in 3rd petri dish and mark it as 3.
- Use 120 seeds in 4th petri dish and mark it as 4.
- Use 150 seeds in 5th petri dish and mark it as 5.
- Pour 15ml of water in all the 5 petri dishes using a measuring cylinder.
- 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.