BACTERIA IMAGES INTRODUCTION: Bacteria are the simplest ,most primitive and unicellular organisms without a true nucleus. That is why they are prokaryotic. they are placed under kingdom Monera. they are found everywhere in air,water,soil,food,inside our body etc. they lack nucleus and other cell organelles of complex cellslike plants,they possess a cell wall. each bacterial cell …
HUMAN EXCRETORY SYSTEM INTRODUCTION:- Various waste products are formed in our body as a result of manymetabolic activities taking place inside the body. These waste substances ifaccumulated would poison cells or slow down their metabolism. Hence, the body mustget rid of these unwanted substances.The metabolic wastes to be excreted includeCO2, H2O, fat, ammonia, urea and uric …
NERVOUS SYSTEM IMAGES INTRODUCTION: We perform many activities consciously or unconsciously, for example, when we eat food, our eyes help to locate the food, the nose smells it, hands bring food to the mouth, teeth chew and masticate it, the tongue pushes the food inside the alimentary canal, and so on. (NERVOUS SYSTEM FUNCTION) All …
FERTILIZATION IN PLANTS Definition Fusion between male gamete and female gamete of plant is called fertilization. Events of fertilization A] Pollination brings female and male gametophyte together- The male and female gametophytes must meet and unite their gametes to fertilize egg. This is done by pollination, in which pollen is placed on the stigma of …
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CLASSIFICATION OF FUNGI INTRODUCTION: – Fungi are non-green, plantlike multicellular organisms belonging to the kingdom Fungi. They grow on dead organic matter in damp and warm places. Moulds, Yeasts, mushrooms are common examples of fungi. (STRUCTURE OF FUNGI) Moulds can be easily observed as they grow on food, bread, fruits, leather and even on barks …
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CONCEPT OF DISEASE COMMUNICABLE AND NON COMMUNICABLE INTRODUCTION: The disease is the malfunctioning of the body organs due to one reason or the other. In other words, it is a disorder of the body. The state of the body when any of its normal functions are disturbed or when the structures are altered is called …
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EVOLUTION NOTES INTRODUCTION: Human beings have always been perplexed about the origin and evolution of life on earth. For centuries, a number of theories and hypothesis have been suggested to explain the evolutionary process. In the previous year, in a very short time life was created by some supernatural power. Most of the religions and …
CUTTING AND BITTING TEETH INTRODUCTION:- Teeth are the hardest non- bony structure in the vertebrate body, jaw bones attach with these in cutting and biting teeth. In our body, we use these for biting, chewing and grinding of the food or in catching of prey in cutting …
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FUNCTION OF CHROMOSOMES INTRODUCTION: Chromosome ( chroma : colour ; soma: body)can be defined as a strand of DNA molecule associated with proteins. Chromosomes are the hereditary vehicles found in the nucleus of a cell. The chromosomes contain genes, thus,they carrier of heredity. Genes help in transferring characteristics from parents to the offsprings which …
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