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Biology Notes Class 11th 12th

@biology_notes_class_11_12th_neet


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Biology Notes Class 11th 12th (English)

Are you a student in need of high-quality biology notes for your Class 11th or 12th studies? Look no further! Join our Telegram channel, Biology Notes Class 11th 12th, also known as @biology_notes_class_11_12th_neet, where you will find daily very important notes specifically tailored for students preparing for NEET and JEE exams. Whether you are looking for PCB notes or just need some helpful tips and tricks for your exams, this channel has got you covered. Plus, you can contact us for advertising opportunities or for any other inquiries. Don't miss out on this valuable resource for all your study material needs! Join us today and ace your biology exams with ease.

Biology Notes Class 11th 12th

05 Jan, 11:59


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Biology Notes Class 11th 12th

03 Jan, 01:28


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30 Dec, 14:02


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Biology Notes Class 11th 12th

30 Dec, 07:40


โœ…cell division hand written short notes
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Biology Notes Class 11th 12th

28 Dec, 18:11


โœช DNA Replication Notes โœจ

Biology Notes Class 11th 12th

28 Dec, 12:31


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Biology Notes Class 11th 12th

28 Dec, 09:55


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Biology Notes Class 11th 12th

26 Dec, 16:54


Evolution Complete Notes

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Biology Notes Class 11th 12th

22 Dec, 11:58


Evolution Complete Notes

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========================

Biology Notes Class 11th 12th

20 Dec, 16:08


๐—˜๐—น๐—ฒ๐—ฐ๐˜๐—ฟ๐—ผ๐—ฐ๐—ฎ๐—ฟ๐—ฑ๐—ถ๐—ผ๐—ด๐—ฟ๐—ฎ๐—บ ๏ฎฉู€๏ฎฉ๏ฎฉูจู€๐Ÿซ€๏ฎฉูจู€๏ฎฉ๏ฎฉูจู€

โžฉ The end of the T-wave marks the end of systole.

โžฉ Counting the number of QRS complexes that occur in a given time period, one can determine the heart beat rate of an individual.

โžฉ A patient is connected to the machine with the three electrical leads (one to each wrist and to the left ankle).

โžฉ P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria.

โžฉ QRS complex represents the depolarisation of the ventricles.

โžฉ T-wave represents the return of the ventricles from excited to normal state (repolarisation)




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Biology Notes Class 11th 12th

20 Dec, 13:26


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Biology Notes Class 11th 12th

19 Dec, 13:35


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Biology Notes Class 11th 12th

17 Dec, 08:25


Biomolecules hand written short notes
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Biology Notes Class 11th 12th

01 Dec, 02:45


๐Ÿ›‘Major Role of Nutrients

Various elements perform the following major role in the plants:

(1) Construction of the plant body: The elements particularly C, H and O construct the plant body by entering into the constitution of cell wall and protoplasm. They are, therefore, referred to as frame work elements. Besides, these (C, H and O) N, P and S also enter in the constitution of protoplasm. They are described as protoplasmic elements.

(2) Maintenance of osmotic pressure: Various minerals present in the cell sap in organic or inorganic form maintain the osmotic pressure of the cell.

(3) Maintenance of permeability of cytomembranes: The minerals, particularly Ca++, K+ and Na+ maintain the permeability of cytomembranes.

(4) Influence the pH of the cell sap: Different cations and anions influence on the pH of the cell sap.

(5) Catalysis of biochemical reaction: Several elements particularly Fe, Ca, Mg, Mn, Zn, Cu, Cl act as metallic catalyst in biochemical reactions.

(6) Toxic effects: Minerals like Cu, As, etc. impart toxic effect on the protoplasm under specific conditions.

(7) Balancing function: Some minerals or their salts act against the harmful effect of the other nutrients, thus balancing each other


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Biology Notes Class 11th 12th

28 Nov, 19:06


Locomotion and movement ๐Ÿ‘short notes ...give some reaction of this type of notes โค๏ธ๐Ÿ˜Š

๐Ÿค—MUST SHARE WITH FRIENDS ๐Ÿคฉ

https://t.me/Class_10th_11_12th_Science_Notes

Biology Notes Class 11th 12th

27 Nov, 08:55


Sexual Reproduction in Flowering Plants

Biology Notes ๐Ÿ˜ฎ


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Biology Notes Class 11th 12th

26 Nov, 03:52


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โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… Physics Notes For Class 11th
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/78
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… Chemistry Notes For Class 11th
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/94
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โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… Biology Notes For Class 11th 11
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/117
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… Mathematics Notes For Class 11th
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/137
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… Physics Notes For Class 12th
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/157
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… Chemistry Notes For Class 12th
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/175
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… Biology Notes For Class 12th
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/193
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… Mathematics Notes For Class 12th
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/208
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… CLASS 11 AND 12 COMPLETE CHAPTERWISE NOTES
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/210
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… REVISION NOTES FOR CLASS 11 AND 12 COMPLETE
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/238
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
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โœ… CBSE SAMPLE PAPER CLASS 12
โžœ
https://t.me/CBSE_SAMPLE_PAPER_CLASS_10_12/46
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Biology Notes Class 11th 12th

26 Nov, 02:27


๐ŸŒบ

๐ŸŒบ

๐ŸŒบ

๐ŸŒบ Citric acid cycle compounds ๐ŸŒบ

Trick :- "Oh Citric Acid Is Of (course) A SiLly STupid Funny Molecule":

Oh - Oxaloacetate
Citric - Citrate
Acid - Aconitate
Is - Isocitrate
Ofcourse - Oxalosuccinate
A - Alpha-ketoglutarate
SilLy sTupid - SuccinyL-CoA SuccinTe
Funny molecule - Fumarate Malate

๐Ÿ“*SilLy and sTupid used to differentiate succinyL and succinaTe*

๐ŸŒบCitric acid cycle compounds๐ŸŒบ

Trick :- "Can I Ask Sharon Stone For My Orgasm?":

Citrate Isocitrate
Alpha-Ketoglutarate
Succinyl CoA Succinate
Fumerate Maleate Oxaloacetate

๐ŸŒบPyruvate: products of complete oxidation๐ŸŒบ

Trick :- "4 Naked Fun 3 Coeds + 1 Guy"

Complete oxidation of pyruvate yields:
4 NADH FADH2 3 CO2 1 GTP


Enzymes classification

Trick :- "Over The HILL":

Oxidoreductases
Transferases
Hydrolases
Isomerases
Ligases
Lyases

๐Ÿ‘‰ Enzymes get reaction over the hill.

๐Ÿ˜Œโค๏ธ Hope so it's helpful โ˜บ๏ธ๐Ÿ‘

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Biology Notes Class 11th 12th

22 Nov, 17:46


B vitamin names ๐ŸŒบ

๐Ÿ“ Trick :- "The Rhythm Nearly Proved Contagious":

๐Ÿ‘‰ In increasing order:

The - Thiamine (B1)
Rhythm - Riboflavin (B2)
Nearly - Niacin (B3)
Proved - Pyridoxine (B6)
Contagious - Cobalamin (B12)


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Biology Notes Class 11th 12th

21 Nov, 18:03


Plant Physiology Tricks : ๐ŸŒบ

๐Ÿ“ Glycolysis steps

"Goodness Gracious, Father Franklin Did Go By Picking Pumpkins (to) Prepare Pies":

Goodness - Glucose
Gracious - Glucose-6-P
Father - Fructose-6-P
Franklin - Fructose-1,6-diP
Did - Dihydroxyacetone-P
Go - Glyceraldehyde-P
By - 1,3-Biphosphoglycerate
Picking - 3-Phosphoglycerate
Pumpkins - 2-Phosphoglycerate (to)
Prepare - Phosphoenolpyruvate Pies - PEP Pyruvate ยท

'Did', 'By' and 'Pies' tell you the first part of those three: di-, bi-, and py-.
ยท 'PrEPare' tells location of PEP in the process.

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Biology Notes Class 11th 12th

20 Nov, 18:05


Anatomy hand written notes


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Biology Notes Class 11th 12th

13 Nov, 06:03


โžก๏ธBiotechnology NCERT Important Points Part -2 โœจโฌ…๏ธ

๐Ÿ”ดThe concept of genetic engineering was the outcome of two very significant discoveries made in   bacterial research. These wereโ€“

โœ…Presence of extrachromosomal DNA fragments called plasmids in the bacterial cell, which replicate independent of chromosomal DNA of the bacterium.

โœˆ๏ธPresence of enzymes restriction endonucleases which cut DNA at specific sites. 

๐ŸŸขThese enzymes are, therefore, calledโ€˜molecular scissorsโ€™. 

๐ŸฆThe main basis of Recombinant DNA Technology is DNA

๐Ÿ”ดcloning :- It is making multiple 
identical copies of any template DNA. Three basic steps in genetically modifying an organism (of DNA cloning) -
 
โœ…(a) identification of DNA with desirable genes;

โœ…(b) introduction of the identified DNA into the host;

โœ…(c) maintenance of introduced DNA in the host and transfer of the DNA to its progeny.


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Biology Notes Class 11th 12th

12 Nov, 18:24


โšก๏ธโšก๏ธ MOST IMPORTANTโšก๏ธโšก๏ธ

SUMMARY OF HUMAN BODY

1: Number of Bones *206*
2: Number of Muscles *639*
3: Number of Kidneys *2*
4: Number of Milk Teeth *20*
5: Number of Ribs *24 (12 pair)*
6: Number of Heart Chamber *4*
7: Largest artery *Aorta*
8: Normal blood pressure *120/80mmHg*
9: Ph of Blood *7.35-7.45
10: Number of vertebrae in the Spine *33*
11: Number of vertebrae in the Neck *7*
12: Number of Bones in Middle Ear *6*
13: Number of Bones in Face *14*
14: Number of Bones in Skull *22*
15: Number of Bones in Chest *25*
16: Number of Bones in Arms *6*
17: Number of Muscles in Human Arm *72*
18: Number of Pumps in Heart *2*
19: Largest Organ *Skin*
20: Largest gland *Liver*
21: Biggest cell *female Ovum*
22: Smallest cell *male Sperm*
23: Smallest Bone *Stapes*
24: First transplanted Organ *Heart*
25: Average length of Small Intestine *7m*
26: Average length of Large Intestine *1.5m*
27: Average weight of new Born baby *2.6kg*
28: Pulse rate in One Minute *60-100
29: Normal body temperature *37 Cยฐ (98.4 Fยฐ)*
30: Average Blood Volume *4 to 5 litrs*
31: Life Span of RBC *120 days*
32: Life Span of WBC *10 to 15 days*
33: Pregnancy Period *280 days (40 week)*
34: Number of Bones in Human Foot *33*
35: Number of Bones in Each wrist *8*
36: Number of Bones in Hand *27*
37: Largest Endocrine gland *Thyroid*
38: Largest Lymphatic Organ *Spleen*
39: Largest part of Brain *Cerebrum*
40: Largest & Strongest Bone *Femur*
41: Smallest Muscle *Stapedius (Middle Ear)*
41: Number of Chromosome *46 (23 pair)*
42: Number of Bones in new Born baby *306*
43: Viscosity of Blood *4.5 to 5.5*
44: Universal Donor Blood Group O negative
45: Universal Recipient Blood Group *AB*
46: Largest WBC *Monocyte*
47: Smallest WBC *Lymphocyte*
48: Increase RBC count called *Polycethemia*
49: Blood Bank in the Body is *Spleen*
50: Non Nucleated Blood cell is *RBC*
51: RBC produced in the *Bone Marrow*
52: River of Life is Called *Blood*
53: Normal Blood Cholesterol level *250mg/dl*
54: Fluid part is Blood!



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Biology Notes Class 11th 12th

12 Nov, 05:49


โญ๏ธ CBSC Complete 11th & 12th Study Material Package in one post โญ๏ธ
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โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”
โœ… Physics Notes For Class 11th
โžœ
https://t.me/CBSE_Class_11_12th_Science_Notes/78
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https://t.me/CBSE_SAMPLE_PAPER_CLASS_10_12/46
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Biology Notes Class 11th 12th

11 Nov, 03:40


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Biology Notes Class 11th 12th

11 Nov, 03:38


BIOLOGICAL CLASSIFICATION

๐Ÿšฅ2 kingdom classification -
Carlous Linnanous
๐Ÿšฅ5 kingdom classification - RH whittaker (1969)
๐Ÿšฅ Bacteria are of two types 1)archaebacteria (old) 2) eubacteria (true)
๐ŸšฅMycoplasma doesnt posses cell wall smallest living cells can survive without oxygen
๐ŸšฅChrysophytes (includes diatoms nd golden algae) walls are made of silica. These are chies producers in ocean
๐Ÿšฅ Dinoflagellates (cell wall has stiff cellulose plates) have two flagella one longituuone transverse.
(Red tides)
๐ŸšฅEuglenoids (protein rich layer k/as pellicle)
๐ŸšฅSlime moulds in suitable condition form aggregation k/as plasmodium nd during unfavorable condition it forms fruty bodies
๐ŸšฅProtozoans (primitive relative of animals)
๐Ÿšฅ Kingdom fungi
Fungi are filamentous contain thread like structure called hyphae mass of hypahe called mycelium
๐Ÿšฅ Meiosis in zygote result in haploid spores
๐ŸšฅPhycomytes
Mycelium is aseptate nd coenocytic asexual rep takes place by zoospores(motile) nd aplanospores(non motile)
๐ŸšฅAscomytes (sac fungi)
Mycelium us branch nd septate asexual spores sre conidia nd sexual spores are ascospores
๐ŸšฅBasidiomycetes (bracket fungi)
Asexual spores absent nd vegetative rep by fragmentation
๐ŸšฅDeuteromycetes (imperfect fungi) rep only by asexual spores called conidia
๐Ÿšฅ Kingdom plantae
Life cycle of plants has two phase
1) diploid sporophytic
2)haploid gametophytic
๐ŸšฅKingdom animalia
Heterotypic multicellular eukaryotic org that lacks cell wall
๐Ÿšฅ Viruses (non cellular org) these are obligate parasites mostly virus have single strand rna protein coat called capsid protects nucleic acid
๐Ÿšฅ Viroids (rna of Viroid is low molecular weight)
๐ŸšฅPrions (similar to virus has abnormal protein)
๐ŸšฅLichens symbotic ass bw algae nd fungi algal comp called phycobiont nd fungal component called mycobiont
๐Ÿšฅmycorrhiza fungi in association with algae as lichens with roots of higher plants

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Biology Notes Class 11th 12th

10 Nov, 14:51


IMPORTANT years in ncert :-

1731 - Many people of Bishnoi community sacrifice their lives saving trees (Jodhpur)

1770 - Priestley's experiment by Bell Jar, Mice & Mint plant, Candle.

1774 - Discovery of oxygen by Joseph Priestley

1838 - Matthias Schleiden-Cell Theory                                                   

1829 - Theodore Schwann- Cell Theory

1850s -  Before industrialization => more white wing Moth

1854 - Julius von Sachs proved that glucose is formed in photosynthesis & stored as starch.

1855 - "Omnis cellula cellula" by Rudolf Virchow & complete the cell theory.

1856 - 1863 Mendel work on garden pea.

1860 - Hydroponics technique developed by Julie Von Sache

1865 - Mendel publishes his workon inheritance of character

1866 - Down's Syndrome discovered by Langdon Down.

1869 - DNA as a acidic substance was 1st identified by Friedrich Meischer & termed a "Nuclein"

1891 - Fossils of Java man discovered in Java
          - Henking discovered X-body (X-chromosome) in insect. (XO- type sex determination)

1892 - Discovery of TMV by D.J. Ivanowsky

1898 -  M.W. Beijerinck demonstrated infectious nature of TMV
          - Discovery of Golgi Body by Camillo Golgi.

1900 - Rediscovery of Mendel's work by ---> โ€ข Hugo de Vries
           โ€ข Karl Corrence
           โ€ข Tschemark

1902 - Chromosomal theory of inheritance given by Sutton & Bovery.

1905 - Law of limiting factors for plants given by Blackmann

1920 - After Industrialisation => more black moth

1928 - Frederick Griffith's Transformation  experiment on Streptococcus pneumonia bacteria

1933 โ€“ 1944 - Avery, Macleod McCarty used transformation principle of Griffith's experiment & concluded that DNA is genetic material.

1938 - Coelacanth/Lobe Fines caught in South Africa ---> Ancestor of amphibia.

1947 - At the time of our independence India's population, was approximately 350 million .

1950 -  Electron microscope invention
            -  Tissue culture started

1951 - Family planning was initiated

1952 - Hershey & Chase experiment more correctly proved that DNA ie genetic material [ unquivocal_proof ]

1953  - Discovery of ribosome by George Palade.
          - S.L Miller Experiment of evolution.
          - Double helical structure model of DNA given by Watson & Crick.

1958 - Matthew Meselson of Franklin Stahl experiment (E. coli in NH4CI medium) proved that DNA replication is semiconservative )
         -  Taylor study on vicia faba plant (used radioactive thymidind and proved  semiconservative nature of DNA)

1960 -  Green Revolution.

1963 - Restriction endonuclease isolated from E. coli.

1963 - Wheat varieties Sonalika f Kalyan Sona (High yield & Disease resistant ) introduced in INDIA

1966 - Derived semi dwarf varieties of rice introduced in India.

1969 - R.H. Whittaker proposed FIVE-KINGDOM Classification

1971 - Discovery of viroids by T.O. Diener
          -  Govt. of India legalised MTP.

1972 - Fluid Mosaic model of plasma membrane by Singer & Nicolson
          - 1st recombinant DNA developed by Stanley Cohen and Herbert Boyer
          - National committee for environmental planning and Coordination was established.
          - Wild life protection act in India.

1974 -  Water Act.  &  also Chipko movement

1980 -  Joint Forest movement

1981 - Air act.
           - AIDS was fired reported
           - Intrinsic growth rate of India (r= 0.0205) 

1983 - Eli Lilly American company human Insulin from E. coli.

1984 - Bhopal Tragedy
          - Ministry of Environment amd Forest.

1986 - Environment Act (NEPA)

1987 - Noise included in air pollution  
          - Montreal protocol (Canada)

1988 - National Forest Policy

1989 -  Montreal Protocol became effective.

1990 -  Delhi ranked 4th among 41 most polluted cities.

1990 - First clinical gene therapy was given to 14 yr old girl with ADA deficiency eye.
- Human Genome Project (HGP) launched.

Biology Notes Class 11th 12th

04 Nov, 16:19


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Biology Notes Class 11th 12th

30 Oct, 05:52


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Biology Notes Class 11th 12th

30 Oct, 05:25


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29 Oct, 09:10


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18 Oct, 03:22


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Biology Notes Class 11th 12th

10 Oct, 12:19


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Biology Notes Class 11th 12th

18 Sep, 13:58


Biological Classification Notes

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Biology Notes Class 11th 12th

18 Sep, 05:26


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Biology Notes Class 11th 12th

16 Sep, 16:28


โ– Morphology Of Flowering Plants

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Biology Notes Class 11th 12th

13 Sep, 08:53


Locomotion and movement ๐Ÿ‘short notes ...give some reaction of this type of notes โค๏ธ๐Ÿ˜Š

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