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The energy requirements in humans are determined by a variety of factors, and understanding these factors is crucial for maintaining a healthy diet and lifestyle. Here are some of the key factors that influence a person’s energy needs: 1. Age: Age plays a crucial role in determining nutrient requirements. Infants, for example, have unique nutritional […]
Fighting the political apathy Political apathy, a prevalent phenomenon in contemporary society, encapsulates the passive and disengaged attitude or, in some cases, outright refusal of citizens to actively participate in the multifaceted realm of their state’s political affairs. This widespread phenomenon manifests itself through a conspicuous absence of enthusiasm, curiosity, and eagerness when it comes […]
Theories of Evolution Organic Evolution Organic evolution is the sum total of adaptive changes from pre–existing or old forms that has taken place over a long time resulting in diversity of forms, structures and functions among organism. The basis of evolution is that all organisms have pre–existing ancestors. Evidences of Evolution Fossil record: A fossil […]
Social animals are those in which individuals of the same species live together cooperatively in organized communities known as societies (colonies). Examples of social animals are: social insects (like termites, honey bees or wasps, ants etc), wolves, foxes, baboons etc. Characteristics of Social Insects They live together They display division of labour They show distinct […]
Adaptation is the possession of special features which improve the chances of an organism to survive in its environment. All organisms have adaptive structures which could be structural or morphological and behavioural in nature. These enable them to live successfully in their habitat. Modes of Adaptation: Structural Adaptation Adaptive Colouration Behavioural Adaptation Structural Adaptation This […]
VARIATION IN POPULATION A population represents a dynamic assembly of organisms belonging to the same species, coexisting within a defined geographical region over a specific duration. This collection of individuals, whether of plants, animals, or microorganisms, forms a vital ecological unit that undergoes continual changes and interactions. Variation, on the other hand, encompasses the array […]
GENETIC TERMINOLOGY Genetics, the scientific study of heredity and variation in all living organisms, was termed by Dilliam Bateson in 1906. Heredity/Inheritance pertains to the passage and manifestation of traits from parents to offspring, accounting for the common resemblances between them. Variation encompasses the dissimilarities existing among parents, offspring, and siblings. Genes are hereditary units […]
Courtship Behaviour in Animals and Territoriality: Courtship behaviour in animals refers to a set of behaviours and displays that individuals of a species engage in to attract potential mates and establish a reproductive partnership. This behaviour often involves various signals, sounds, postures, and movements that communicate the fitness and availability of an individual for mating. […]
STRUCTURE OF A FRUIT A fruit is a matured fertilized ovary of a flower containing one or more seeds. Contrary to this, some plants do not undergo fertilization for the formation of their fruit. Such fruits are called parthenocarpic fruits e.g. banana and pineapple. Such fruits are seedless. A typical fruit has the following parts […]
The eyes are remarkable sensory organs that provide us with a sense of sight, allowing us to perceive the world around us in rich detail. Key Facts About The Eyes: 1. Complex Anatomy: The human eye is a complex structure made up of several components that work together to capture and process visual information. These […]
Development of Zygotes in Plants In flowering plants, the process of pollination is followed by fertilization, leading to the development of the zygote. This development eventually transforms the flower into a fruit that encloses the seeds. The male and female sex cells responsible for zygote formation are the pollen grain and the ovule, respectively. The […]
The reproductive system in humans is a complex and vital system responsible for the creation of new life. It plays a fundamental role in the perpetuation of the human species and involves a series of intricate processes that culminate in reproduction. Let’s delve into the various aspects of the reproductive system and the process of […]
NATURAL DYNAMIC BALANCE: In the realm of nature, a state of dynamic equilibrium prevails. When environmental conditions influenced by population dynamics, encompassing both abiotic and biotic elements, are propitious, growth is encouraged. Conversely, when these conditions turn unfavourable, growth is hindered. A constraining element that curbs population expansion is termed a “limiting factor.” The amalgamation […]
1. Ecology of Population An ecological population refers to a group of individuals of the same species that live in the same area and interact with each other. This concept is fundamental to the field of ecology, which is the study of how organisms interact with each other and their environment. A population is defined […]
SENSORY RECEPTORS Living organisms have the ability to respond to changes in their environment, known as stimuli. These stimuli can be of various types, including mechanical, electromagnetic, chemical, or thermal. While most cells in an organism’s body are capable of sensing stimuli, certain cells specialize in detecting specific types of stimuli. These specialized cells are […]
Structure of The Kidney The mammalian kidney is a reddish-brown, bean-shaped organ located at the posterior end of the abdomen. The right kidney is slightly lower than the left. On cutting a kidney longitudinally, two distinct regions are observed: an outer cortex and an inner medulla. Narrow tubules called urinary tubules (nephrons) pass through these […]
What are Hormones? Hormones are chemical substances produced or secreted by endocrine glands, which are ductless glands in the body. They are released into the bloodstream and travel to target organs to exert their effects. Hormones can speed up or slow down biological reactions in the body. They act as chemical messengers, produced in one […]
(1) Role of government in agricultural production
Environmental factors required for food production
3Ways of improving crop production
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 Agricultural classification Classification based on life cycle Classification based on size BOTANICAL CLASSIFICATION The concept of binomial nomenclature has it that plant kingdom can be subdivided into divisions, classes, orders, […]
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