Bio Ivestigatory Project PDF
Bio Ivestigatory Project PDF
Bio Ivestigatory Project PDF
By:
K S PRABA SHANKAR
Kendriya Vidyalaya
Thanjavur
CERTIFICATE
This is to certify that K.S Praba Shankar, student of Class XII, Kendriya
Vidyalaya AFS Thanjavur has completed the Project titled " STUDY ON COLOUR
BLINDNESS "during the academic Year 2023-2024 towards partial fulfillment of
credit for the Biology Practical evaluation of CBSE 2023, and submitted
satisfactory Report, as compiled in the following pages, under my supervision
Mr. Ayyappan, Department of Biology, Kendriya Vidyalaya Air Force Station
Thanjavur.
Thanjavur
Date:
DECLARATION
PLACE SIGNATURE
DATE:
INDEX
Date:
OBJECTIVE
Monochromacy:
The main symptom of color blindness is not seeing colors the way most
people do. If you’re color blind, you may have trouble seeing:
Symptoms of color blindness are often so mild that you may not
notice them. And since we get used to the way we see colors, many
people with color blindness don’t know they have it.
People with very serious cases of color blindness might have other
symptoms, too — like quick side-to-side eye movements (nystagmus)
or sensitivity to light.
Cause of colour blindness ?
The test above simulates the D-15 dichotomous test which was
introduced by Farnsworth in 1947. It aims to divide people into two
groups. Slightly colorblind and not colorblind people which pass the
test and all others who fail it.
RESEARCH METHODOLOGY
Data collection:
The survey was conducted on the school premises.these data were
gathered from students through one-on-one interviews
Questionnaire:
A total of 15 ishihara plates were displayed.by displaying the ishihara
test plate to the students,colorblindness was evaluated.The data
(students who were affected/unaffected)were analyzed by the number
of plates out of 15 that they were able to accuracy identity.The reading
of the ishihara plates followed as carefully as possible.all the plates
were 70 cm distant from the observer and the maximal time of reading
for each plate was 5 seconds.
Analysis:
Each subjects was examined in the presence of only the interviewers
In order to maintain confidentiality and to make their psychological
Stress as low as possible.
All of them who made more than 6 mistake during their reading and
those who are u n able to read more than 10 plates were identified to
be colorblind
Numbers on the ishihara plate :
12 8 6 29 57
5 3 15 74 5
6 57 5 42 45
llllll
DATA ANALYSIS
1. GENDER:
2. AGE:
It is found that 20% of our respondents were of 16 years, 10% were 17
years and 7years, 14% were 15 years,6% were 14 years,8% were 10,12
and 9 and 4% were 8, 13, 11 and 18 years.
3. COLOUR BLINDNESS-FEMALE:
4. COLOUR BLINDNESS-MALE:
It is found that out of 30 respondents 15% were affected and 85% were
unaffected.
From this graph we can say that maximum, 26 students said the
number 74 wrongly and minimum, 4 people said the numbers 4 and 15
wrongly.
FINDINGS
Enchroma Glasses:
Color blind glasses or color correcting lenses are light filters, usually in
the form of glasses or contact lenses, that attempt to alleviate color
blindness, by bringing deficient color vision closer to normal color
vision or to make certain color tasks easier to accomplish. Despite viral
status, the academic literature is generally skeptical of the efficacy of
color correcting lenses.
CONCLUSION
They lead rather normal livesdespite being colorblind. The only issue is
that they have trouble telling some colours apart. One's life is not
significantly harmed by being Colorblind. From the survey Males are
more affected by colour blindness than Females. This is because colour
blindness is a sex linked resseive disorder
The genes that can give you colour blindness are passed down on the X
chromosome. Since it's passed down on the X chromosome, color
blindness is more common in men.
INHERITENCE PATTERN
have the faulty gene. 6. The female might have both X chromosomes
normal or one X chromosome might have faulty gene but gene on
other chromosome compensates it so the female is carrier and passes
on faulty gene to her son so he is colour-blind.
Case:2
Case:4
2. https://en.m.wikipedia.org/wiki/Color_blindness
3.https://www.nei.nih.gov/learn-about-eye-health/eye-conditions-
and-diseases/color-blindness/types-color-blindness
4. https://www.britannica.con/science/color-blindness
5. https://www.healthline.com/health/color-blindness
6.Senior projects