Form 3 Biology Complete Notes (Full Notes For High School)

FORM III TOPICS 1. a) i) What is meant by the term binomial nomenclature? scientific system of naming organisms using the generic(genus) and specific (species) names ii) State briefly the general principles of classif ication of living organisms scientific names must be in Latin or should be latinised family names are formed by adding the suffix idea to the stem of the genus e.g. the genus Rana become Ranaidea generic names should be a single unique name b) State the main characteristics of the five kingd oms of organisms i. Monera e.g. bacteria unicellular (single celled) prokaryotic (genetic material not surrounded by membrane) cell wall without cellulose lack most organelles small in size (microscopic) ii. Protista(protoctista) single celled(unicellular) eukaryotic (most cell organelles present) when cell walls are present have no cellulose e.g. protozoa and algae usually microscopic iii. Fungi have hyphae (which form mycelia) absence of chlorophyll have rhizoids (lack roots, leaves, stem) have spore forming structures (sporangia) e.g. mucor, rhizopus iv. Plantae most are green/contain chlorophyll autotrophic/feed by photosynthesis cells have cellulose cell walls respond slowly to stimuli (tropism) lack locomotion (are stationary) indefinite growth (at meristems) lack specialized excretory structures v. Animalia cells do not have cell walls