ECOLOGY ~ BIOLOGY FORM 6 TOPIC 6: ECOLOGY ~ BIOLOGY FORM 6 ECOLOGY Ecology is a scientific study of relationship of organism with their natural surroundings OR Is the study of relationships of living organisms to each other and their surrounding (physical surrounding) Importance of studying Ecology It gives us scientific foundation of understanding some … Read more
EVOLUTION BIOLOGY FORM 6 TOPIC 5: EVOLUTION ~ BIOLOGY FORM 6 TOPIC 5: EVOLUTION ~ BIOLOGY FORM 6 ORGANIC 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 from pre-existing species. FORCES/PRESSURES LEADING TO ORGANIC EVOLUTION 1. PRIMARY FORCES … Read more
TOPIC 3: REPRODUCTION (II) ~ BIOLOGY FORM 6 TOPIC 3: REPRODUCTION (II) ~ BIOLOGY FORM 6 TOPIC 3: REPRODUCTION (II) ~ BIOLOGY FORM 6 SIGNIFICANCE OF MEIOSIS: (i) It insures constant chromosome number to all species which reproduce sexually. This is because during gametes formation. The number of chromosomes is reduced to half and restored … Read more
TOPIC 3 : REPRODUCTION (I) ~ BIOLOGY FORM 6 TOPIC 3 : REPRODUCTION (I) ~ BIOLOGY FORM 6 Is the ability of an organism to produce an individual of its type in order to increase the number of individuals of that species. MEANS OR TYPES OF REPRODUCTION Asexual reproduction. Sexual reproduction. ASEXUAL REPRODUCTION Asexual reproduction … Read more
TOPIC 2: GROWTH AND DEVELOPMENT ~ BIOLOGY FORM 6 TOPIC 2: GROWTH AND DEVELOPMENT ~ BIOLOGY FORM 6 Growth is a fundamental characteristic of living organisms. OR Growth – is defined as an irreversible increase in dry mass of living material. OR Growth is a permanent or irreversible increase in dry mass of protoplasm due … Read more
TOPIC 1: TRANSPORTATION ~ BIOLOGY FORM 6 TOPIC 1: TRANSPORTATION ~ BIOLOGY FORM 6 TRANSPORTATION OF MATERIALS IN LIVING ORGANISM Why is there a need of special transport system? Answers: Over short distances, means of transport are rapid and efficient ie: osmosis, diffusion, endocytosis etc. But in multicellular organisms which have a large surface area … Read more
TOPIC 6: GASEOUS EXCHANGE AND RESPIRATION ~ BIOLOGY FORM 5 TOPIC 6: GASEOUS EXCHANGE AND RESPIRATION ~ BIOLOGY FORM 5 Gaseous exchange is the movement of oxygen and carbondioxide between the organism and its environment at the respiratory surfaces. Oxygen goes in and carbon oxide goes out – These gases move in and out through … Read more
TOPIC 5: NUTRITION ~ BIOLOGY FORM 5 TOPIC 5: NUTRITION ~ BIOLOGY FORM 5 NUTRITION TOPIC 5: NUTRITION ~ BIOLOGY FORM 5 Nutrition is the process of acquiring energy and materials such as proteins, glucose, minerals, fats etc. Living organisms can be grouped on the basis of their source of energy or source of carbon. … Read more
TOPIC 4: COORDINATION ~ BIOLOGY FORM 5 TOPIC 4: COORDINATION ~ BIOLOGY FORM 5 COORDINATION Coordination is a linking together of the functions of different organs so that they work at a fine time and rate required by the body. Coordination is achieved through a nervous and endocrine or hormonal system. DIFFERENCE BETWEEN NERVOUS AND … Read more
TOPIC 1: CYTOLOGY (III) ~ BIOLOGY FORM 5 TOPIC 1: CYTOLOGY (III) ~ BIOLOGY FORM 5 TOPIC 1: CYTOLOGY (III) ~ BIOLOGY FORM 5 Proteins are polymers of amino acids joined together by peptide bond. OTHER BONDS FOUND IN PROTEINS. Ionic bonds: is an electrostatic attraction between positive and negative charge. Hydrogen bond: this occurs … Read more