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Test time - 9:00pm

Test date - 18/05/2021

Test Topic - Neural Control and Coordination

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2021-05-17 19:58:38 Formulas Notes Of Mole Concepts

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2021-05-17 19:20:20 Open / Comment

2021-05-17 10:29:35 CLASS 12 BIOLOGY NCERT HIGHLIGHTS PDF

UNIT VI
✓ Reproduction in Organisms
✓ Sexual Reproduction In Flowering Plants
✓ Human Reproduction
✓ Reproductive Health

UNIT VII
✓ Principles of Inheritance and Variations
✓ Molecular Basis of Inheritance
✓ Evolution

UNIT VIII
✓ Human Health and Diseases
✓ Strategies for Entertainment in Food Production
✓ Microbes In Human Welfare

UNIT IX
✓ Biotechnology: Principle and Processes
✓ Biotechnology and It's Applications

UNIT X
✓ Organisms and Population
✓ Ecosystem
✓ Biodiversity and Conservation
✓ Environmental Issues

CLASS 11 BIOLOGY NCERT HIGHLIGHTS PDF Open / Comment

2021-05-17 09:28:12 LIVE NOW IMPORTANT MCQ FROM STRATEGIES FOR ENHANCEMENT IN FOOD PRODUCTION

NCERT BIOLOGY PRACTICE SESSION

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2021-05-17 07:44:43 BIӨDIVΣЯƧƬIY ΛПD ᄃӨПƧΣЯVΛƬIӨП

𝐐𝐔𝐈𝐂𝐊 𝐑𝐄𝐕𝐈𝐒𝐈𝐎𝐍 𝐍𝐎𝐓𝐄𝐒
There are about 20,000 species of ants, 3,00,000 species of beetles, 28,000 species of fishes & 20,000 species of orchids

Term biodiversity was popularised by Edward wilson

India has 50,000 genetically different strains of rice and 1000 varieties of mango

Acc to IUCN (2004), No.of species discovered and described range about 1.5 million

Robert may estimate - total no.of species is around 7 million

More than 70% of species discovered are animals

More than 70% of animals are insects

Plants constitute not more than 22% of total species

Total no.of species of fungi is more than combined total of fishes, amphibians, reptiles and mammals

India occupy 2.4% of total land surface but they contribute 8.1% of total biodiversity

There are about 45,000 species of plants and twice as many animals are discovered in india

Acc to robert estimate...only 22% of total no.of species have been discovered


There are 1,00,000 plant species and more than 3,00,000 animals species are yet to be discovered in india

Columbia has 1400 species of birds...newyork - 105 species of birds, Greenland - 56 species

India has 1200 species of birds Amazonian rain forest in south

america has 1300 species of birds, 40000 species of plants, 427 amphibians, 427 mammals, 378 reptiles, more thab 1,25,000 invertebrates

The colonisation of tropical pacific island by humans has led to the extinction of 2000 species of native birds

Over 784 species have extincted in past 500 years ( 359 invertebrates, 338 vertebrates & 87 plants )

In last 20 years, 27 species disappeared

Around 15,500 species are facing threat of extinction

32% amphibians, 31% gymnosperms, 23% mammals, & 12% birds are facing threat of extinction Open / Comment