Mr. FAROUK J. T

A pest is an organism which harbors disease organism(s) or causes damage to other organism(s). There are crop and livestock (animals) pests.

CLASSIFICATION OF PLANTS Plants exists in various forms and types hence, the need for classification.  Plants can be classified on the following bases   BOTANICAL CLASSIFICATION The concept of binomial nomenclature has it that plant kingdom can be subdivided into…

Control of Harmful Micro-Organism The control of harmful microbes include removal, inhibition of growth or killing by physical agents/processes and chemical agents or antibiotics. Some common methods of controlling harmful microorganisms in order to maintain good health include Vectors and…

Sexually Transmitted Infections (STIs) (veneral diseases) are the diseases that are contacted through sexual intercourse. Examples include syphilis, gonorrhea, herpes, thrush, AIDSetc.The table below shows a list of STIs, their symptoms, transmission, etc.   DISEASE CAUSATIVE ORGANISM SYMPTOMS PREVENTION/CONTROL GONORRHOEA…

Bacteria reproduce by binary fission, in which a single cell divides into two. This process is called asexual reproduction. The time interval required for the cell to divide into two is called the generation time. This time varies from one…

Micro-organisms otherwise called microbes or germs can be defined as living things which cannot be seen with unaided eye but by the use of microscopes. They exist almost everywhere, in water, air, soil, surface of objects, as well as on…

hen population-influenced factors (abiotic and biotic) are favourable, growth is promoted but when they are unfavourable growth is retarded.

The orderly change in the inhabitants of an area over time is called succession. It can also be defined as the step by step orderly and gradual replacement of communities of organisms that leads to a climax community. An illustration…

This is the transfer of mature pollen grains from the anther of one flower to the mature stigma of the same or another flower of the same plant or another plant of closely related species. Pollination usually precedes fertilization. There…

STRUCTURES AND FUNCTIONS OF THE REPRODUCTIVE ORGANS IN PLANTS The flower is the reproductive structure of a flowering plant. It has both male and female sex organs hence it can carry out sexual reproduction. After fertilization has taken place in…

REPRODUCTIVE SYSTEM Most multicellular animals and plants undergo a complex form of sexual reproduction in which especially differentiated male and female reproductive cells (gametes) unite to form a single cell, known as a zygote, which later undergoes successive divisions to…

Excretion is the process by which metabolic waste products are removed from the body of all living things. Excretion is different from egestion which is the removal of solid waste (undigested food substances i.e.faeces) through the anus. Excretion is necessary…

TYPES OF ASSOCIATIONS AND THEIR FEATURES SYMBIOSIS OR MUTUALISM (+  +) Definition: When both population benefit and at least one of them is so dependent upon the other for some critical resource or function that it cannot survive in the…

FEEDING RELATIONSHIPS Since all living organisms must obtain energy and nutrients from the environment in order to remain alive, they are into feeding relationships. This makes an ecosystem a functional unit. All organisms fall into one of the three major…

Biomes are large natural terrestrial ecosystems, identified by their dominant vegetation. They are terrestrial because plants form the bulk of the community in any ecosystem e.g. a forest biome has densely packed tall trees while grasses and few scattered shrubs…

Ecology is the study of plant and animals (as well as microorganism) in relation to their environment. As a practical science, ecological studies involve:- BRANCHES OF ECOLOGY Depending on whether the organisms are studied alone or in groups, ecology is…