DEFINITION OF ECOLOGY Ecology is the study of plant and animals (as well as microorganism) in relation to their environment. As a practical science, ecological studies involve:- Studying the distribution of living organisms Finding out how living organisms depend on themselves and their non-living environment for survival. Measuring factors affecting the environment. BRANCHES OF ECOLOGY […]
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Nutrition is defined as the process by which living organisms obtain and utilize food material from external environment for metabolic activities such as respiration, growth, excretion and reproduction. Photosynthetic or holophytic Nutrition is defined as a process whereby green plant manufacture their own organic food from simple inorganic substances such as carbon (iv) oxide, water,
Autotrophic Nutrition This is the type of nutrition in which the organisms are able to manufacture their own food. Organisms which can manufacture or synthesize their own food are called autotrophs. Autotrophic nutrition is carried out by all green plants through the process of photosynthesis and by some certain bacteria through the process of chemosynthesis
Nutrient cycle is defined as the circulation of certain nutrient such as carbon, sulphur and water in nature Carbon Cycle The carbon cycle is the way carbon (iv) oxide is being used from the atmosphere by photosynthesis and put back into the atmosphere by respiration and decay. The carbon cycle involves the following processes Photosynthesis,
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Organization of life is defined as the existence of life from a single called organisms to a multicellular organisms with complex form that perform different functions Levels of Organization 1 First level (cell): A cell which is the functional and structural unit of protoplasm bounded by a membrane is the first level of organization. It
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Science is defined as a systematic process of making enquiry about the living things and non-living things in our environment. The term Biology is coined from two Greek work bios meaning life and Logos meaning study. Therefore Biology is simply defined as study of life i.e. study of living things or Biology is defined as
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Classification is defined as the arrangement of living things into groups based on structural genetic and cellular organization. This is called TAXANOMY.The system of classification of living things used today is based on that introduced by Swedish naturalist named Carl Von Linne(1707-1778).His name was better known in Latin as Carolus Linnaeus.He published the classification of
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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 groups of biotic community, namely: producers (autotrophs), consumer (heterotrophs) and decomposers The autotrophs provide food
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