1. Crabs and  Prawns          A. Book lungs

2. Spiders and scorpions     B. Book gills

3. King crab (Limulus)        C. Trachea

4. Insects                             D. Gills

1. Ferns                 A. Moss, Liver wort, Riccia

2. Conifers             B. Spirogyra, seaweed, cladophora

3. Bryophytes         C. Horsetails, Marsilea

4. Algae                  D. Pine, deodar, cypress, spruce 

1. Body without scales

2. Larva aquatic 

3. External fertilization

4. Larva breathes through gill but adult through gills

Who devised the system of Binomial nomenclature?