BIOLOGY A LEVEL(FORM SIX) NOTES – REPRODUCTION 1
REPRODUCTIONReproduction is the ability of an organism to produce an individual of its type in order to increase the number of individuals of that species.
BIOLOGY A LEVEL(FORM SIX) NOTES – EVOLUTION
EVOLUTIONORGANIC EVOLUTION.Organic evolution is a gradual change in the genetic composition of organisms in a population during successive generations leading to formation of new species
BIOLOGY A LEVEL(FORM SIX) NOTES – REPRODUCTION 2
Significance of MeiosisMeiosis ensures a constant chromosome number for all species that reproduce sexually. During gamete formation, the chromosome number is halved and then restored
BIOLOGY A LEVEL(FORM SIX) NOTES – ECOLOGY
ECOLOGYEcology is the scientific study of the relationship of organisms with their natural surroundings.ORThe study of relationships of living organisms to each other and their
BIOLOGY A LEVEL(FORM SIX) NOTES – TRANSPORTATION
TRANSPORTATIONTRANSPORTATION OF MATERIALS IN LIVING ORGANISMWhy is there a need of special transport system?Answers: Over short distances, means of transport are rapid and efficient ie:
BIOLOGY A LEVEL(FORM SIX) NOTES – GROWTH AND DEVELOPMENT
GROWTH AND DEVELOPMENTGrowth is a fundamental characteristic of living organisms.ORGrowth is defined as an irreversible increase in dry mass of living material.ORGrowth is a permanent
BIOLOGY A LEVEL(FORM SIX) NOTES – GENETICS
GENETICSGenetics is the study of heredity and variation.Heredity is the passage of characters from one generation to another.Variation refers to differences among individuals of the