NEET TRICKS

Organisms which exhibiting characters of two adjacent taxonomic groups are called connecting links. Group Connective Link Living and non-living Virus Virus and Bacteria Rickettsia Protozoa and metazoa Xenoturbella and Nematoderma (flatworm) Bacteria and Fungi Actinomycetes Protista and Fungi Myxomycetes Protista and Bryophytes Hornworts Protista and Bryophytes Bryophytes and Pteridophytes Club moss Pteridophytes and Gymnosperms Cycas Gymnosperms and Angiosperms Gnetum(gymnosperm) Aquatic and land plants Fritschiella Animals and Plants Euglena(protozoan) Protozoa and Porifera Proterospongia(protozoan) Coelenterates and Platyhelminthes Ctenophora Annelida and Arthropoda Peripatus (walking worm) Annelida and Mollusca Neopilina(Mollusca) Annelida and Mollusca Trochophore larva Echinodermata and Chordata Tornaria larva Chordates and Non-chordates Balanoglossus (hemichordate) Cartilaginous and Bony fish...

Total no of groups = 18  Total no of periods = 7 s block elements Group 1 Element Symbol Mnemonic 1. Hydrogen H हे 3. Lithium Li ली 11. Sodium Na ना 19. Potassium K की 37. Rubidium Rb रब 55. Caesium Ce से 87. Francium Fr फरियाद Mnemonic = हेलीना की रब से फरियाद Group 2 Element Symbol Mnemonic 4. Beryllium Be बेटा 12. Magnesium Mg मांगे 20. Calcium Ca कन्या 38. Strontium Sr सुन्दर 56. Barium Ba बाप 88. Radium Ra राजी Mnemonic = बेटा मांगे कन्या सुन्दर बाप राजी p block elemen...