SS 2 Biology (1st Term)

Biology

ADAPTATION

ADAPTATION Adaptation is defined as the ability of an organism to live successfully in a particular habitat as a result of its structure, appearance and behaviour. It is expected that every organism must adapt to its environment in order to survive. Plants and animals possess certain features which enable them to adapt to either aquatic […]

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Biology

ECOLOGICAL MANAGEMENT

Biological Association In a community, there exist different kinds of biological associations between organisms of different species. Some of these biological associations are beneficial, some are neutral while others are harmful.   Types of Associations Symbiosis Definition: This is a close association between two organisms in which one or both of them benefit from each

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Biology

CONSERVATION OF NATURAL RESOURCES

CONSERVATION OF NATURAL RESOURCES Definition: Conservation is defined as the planned, control exploitation or judicious use of natural resources to ensure their continuous availability and to preserve the quality or original nature of the environment. In other words, conservation is the preservation of natural resources from loss, waste or exploitation through rational use and to

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Biology

ENVIRONMENTAL POLLUTION

POLLUTION  Definition: Pollution is defined as the release of toxic or harmful substances into the environment by their natural forces or man and other animals to an extent that causes biological damage to man and his resources. In other words, pollution is the release of harmful substances into the environment, i.e., water, air and land

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Biology

NITROGEN CYCLE

Nitrogen Cycle Nitrogen is an abundant element in the atmosphere. It is an essential constituent of proteins, a group of substances found in all living cells. About 78% of air is composed of gaseous nitrogen. Plants cannot incorporate nitrogen gas into organic compound and therefore depend on various types of bacteria to make nitrogen available

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Biology

FOOD PRODUCTION AND STORAGE

Introduction                                   Food production depends on the following Role of government in agricultural production Environmental factors required for food production 3Ways of improving crop production   Role of Government in Agricultural production The role of government in agricultural production include Provision of agro-chemicals Provision of financial assistance. Provision of high quality planting materials Provision of tractors

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Biology

TERRESTRIAL HABITATS

TERRESTRIAL HABITATS Organisms of the land are called terrestrial organisms. They include plants and animals that are found living on the ground and under the ground. Basically, terrestrial habitat is subdivided into four main parts, namely; marsh forest grassland/ savanna arid land/ desert   EVALUATION What are terrestrial organisms? List four types of terrestrial habitats

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Biology

AQUATIC HABITAT

HABITAT (AQUATIC HABITAT) Habitat is a place where organisms (plants, microorganisms and animals) are naturally found e. g. the habitat of tadpole is the bottom of fresh water ponds or streams. There are three main types of habitats, namely; aquatic habitat (in or around water), terrestrial habitat (in or on land) and arboreal habitat (in

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