CLASSIFICATION II

General Principles of Classification Classification is the science that puts organisms into distinct groups to make their study easy and systematic. Modern scientific classification is based on structure and functions. Organisms with similar anatomical and morphological characteristics are placed in Read More …

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EXCRETION AND HOMOESTASIS

PART I: EXCRETION Excretion is a process by which living organisms separate and eliminate waste products of metabolism from their bodies Metabolic wastes are toxic to cells if allowed to accumulate, and could also alter the normal conditions for cell Read More …

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RESPIRATION

Definition: process by which food substances are chemically broken down in all living cells to release energy, carbon (IV) oxide and water or alcohol Tissue respiration takes place in mitochondria. These organelles occur in large numbers in cells of organs Read More …

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GASEOUS EXCHANGE

Gaseous Exchange in Plants Gaseous exchange: process by which respiratory gases, O2 and CO2, are passed across the respiratory surface Concentration gradient existing btn the respiratory surface and the surrounding medium facilitates gaseous exchange The mechanism of exchange involves simple Read More …

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NUTRITION IN PLANTS AND ANIMALS

Introduction Nutrition refers to the process by which living organisms obtain and assimilate (utilize) nutrients. It is one of the fundamental characteristics of living things. The nutrients obtained are useful to the living organisms in many ways: The nutrients are Read More …

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