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 […]
FACTORS DETERMINING ENERGY REQUIREMENTS IN HUMANS Read More »
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
Evolution: Theories of Evolution, Jean Lamarck’s theories Read More »
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
Social Animals | Characteristics, Examples & Importance Read More »
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
Adaptation: Structural Adaptation. Adaptive Colouration & Behavioural Adaptation Read More »
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
Variation, Competition & Succession of Organisms Read More »
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
GENETIC | HEREDITARY, MENDEL’S WORK, GENOTYPE Read More »
Reproductive Behaviours: Courtship Behaviour, Display of Colours & Seasonal Migration 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
Reproductive Behaviours Read More »
Fruits : Types, Structure, Dispersal of Fruits, Agents of Dispersal of Fruits 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
Fruits : Types, Structure, Agents, Dispersal of Fruits Read More »
The Eyes: Anatomy, Functions, Problems, Solutions, Symptoms or Signs, Care For Eyes 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
The Eyes | Anatomy, Functions, Problems, Solutions Read More »
Seeds: Zygotes, Conditions for Seed Germination, Formation & Seeds Germination 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
Seeds | Zygotes, Conditions, Formation & Seeds Germination Read More »