Connecting And Missing Links Of Biological World


LinkBetween the groups
ActinomvcetesBacteria and Furigi
ArchaeopteryxBirds and Reptiles
BalanoglossusChordates and nonchordates
Chimaera (rat or rabbit fish)Bony and Cartilaginous fishes
Club mossBryophytes and Pteridophytes
CycasPteridophytes and Gymnosperms
GnetumGymnosperms and Angiosperms
NeopilinaAnnelida and Mollusca
OrnithorhynchusReptiles and Mammals
Peripatus (Walking worm)Annelida and Arthropoda
Protopterus (Lungfish).Pisces and Amphibia
RickettsiaVirus and Bacteria
VirusLiving and non-living

Common Abbreviations in Biology

ABAAbscisic add
ACTHAdrenocorticotrophic Hormone
ADHAntidiuretic Hormone
AIDSAcquired Immuno Deficiency Syndrome
ATPAdenosine triphosphate
ATPaseAdenosine triphosphatase
BCGBacille Calmette-Guerin
BMRBasal Metabolic Rate
BODBiological Oxygen Demand'
2, 4-D2, 4-Dichlor?phenoxy acetic acid
DDTDichloro diphenyl trichloroethane
DLCDifferential Leucocyte' Count
EDTAEthylenediamine tetra acetic acid
ELISAEnzyme-Linked Immunosorbent Assay
FADFlavin adenine dinucleotide
FADHReduced Flavin adenine dinucleotide
FMNFlavin mononucleotide
GDP'Guanosine diphosphate
GLCGas- Liquid Chromatography
HfrHigh frequency recombination cell
HIVHuman Immunodeficiency Virus
HMPHexose Monophosphate Pathway
IAAIndole Acetic Acid
IMIIntramuscular Injection
LHLuteinizing Hormone
LSDLysergic acid Diethylamide
NAANaphthalene Acetic Acid
NADPNicotinamide adenine dinucleotide phosphate
NORNucleolar organising region
OPVOral Polio vaccine
P680Reaction centre of Photosystem II
P700Reaction centre of Photosystem I
PEPPhospho enol pyruvate
PFRPhytochrome far red
PRPhytochrome red
RBCRed blood corpuscles
RUBPRibulose bishosphate
RubiscoRibulose bisphosphate carboxylase oxygenase
TLCThin Layer
Chromatography orTotal Leucocyte Count
TMVTobacco mosaic virus
UTPUridine triphosphate
WBCWhite blood corpuscles


AngiospermEucalyptus (Australian species, 114m)
AnimalGiraffe (Giraffa camelopardalis)
GymnospermSequoia semperuirens (111.25 m)
Monocot PlantDate palm (Phoenix dactyliferal


Angiospermic flowerWolffia (1.1 mm)
Angiospermic plantLemna (Duckweed)
Bone in manEar ossicle Stapes (2.6-3.4mm)
BirdHumming bird of Cuba, (helenae)
Cell of vertebrateSquamous epithelium
Endocrine glandPituitary
GymnospermZamia pygmea
Invertebrate Major PhylaPorifera
Number of animalAscaris (2) chromosome
Number of plantHaplopappus gracilis
chromosome(2n = 4)
Pollen grainOrchid


Bone of man Femur
Creeper (Plant)Elephant creeper (Eniada pursaethai)
LeafRaphia uinifera (30-50 ft)


AlgaMaerocystis macrocarpa (Brown alga, Kelp 60 m)
AntherozoidCyeas circinalis
ArchegoniumBryophyte (Moss)
Biome (richest in terms ofTropical rain forest plant species)
Bird sanctuaryBharatpur
Class (of plantae)Angiosperms
Coral reef in worldGreat barrier reef of North East Coast of Australia (2 × 103 kms.)
Exocrine glandLiver
FlowerRafflesia arnoldi
Largest Forest area in IndiaMadhya Pradesh
Number of AnimalAulocantha
chromosomes(Radiolarian; 2n = 1600)
Number of PlantOphioglossum
chromosomes(pteridophyte, Adler'stongue, 2n=1262)
Plant cellAcetabularia (green alga).
Pollen grain in AngiospermsMirabilis
Phylum (of Animals)Arthropoda

Important Dates

Antileprosy day30th January
Blood Donation day1st October
Doctor's day1st July
Human Rights day10th December
International day of  Biodiversity29th December
International Thalassaemia day & World8th May
Red.Cross day
Kisan Divas23rd December
National Pollution Prevention day2rtd December
Van Mahotsava (Festival of tree Plantation)1st week of February and  July
Vigyan Divas28 February'
World AIDS day1st December
World Conservation day3rd December
World Earth day'22nd April
World Environment day5th June
World' Forest day21st March
World Health day7th April
World Literacy day8th September
World Ozone day16th September
World Population day11th July
World Wild Life Week1st Monday of October.
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