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BIOLOGY LESSON NOTE ON HUMAN KIDNEY

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Lesson Note on the Human Kidney Topic: The Human Kidney Duration: 40 minutes Specific Objectives: By the end of the lesson, students should be able to: Define the kidney and state its location in the human body. Identify and describe the structure and functions of the kidney. Explain the processes involved in urine formation (filtration, reabsorption, and secretion). Describe how the kidney contributes to homeostasis. Identify common kidney-related diseases and how to prevent them. Evaluate the importance of maintaining kidney health. Lesson Content: 1. Introduction to the Human Kidney The kidneys are vital organs in the human body responsible for filtering waste from the blood and regulating water and electrolyte balance. They are part of the excretory system and play a crucial role in homeostasis. Location: The kidneys are located in the abdominal cavity, on either side of the spine, just below the rib cage. Each kidney is bean-shaped and about the size of a fi...
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BIOLOGY LESSON NOTE ON POLLINATION IN PLANT

  TOPIC: POLLINATION IN PLANTS Pollination is the transfer of pollen grains from a mature anther to a mature stigma. In most flowering plants, external agents are required for pollination to occur. Pollination brings about fertilization and the production of fruits. Types of Pollination There are two types of pollination; 1. Self pollination is the transfer of mature pollen grains from the anther to the stigma of the same flower or another flower on the same plant. 2. Cross pollination is the transfer of mature pollen grains from the anther of a flower to the stigma of a flower of another plant of the same species. Cross pollination brings the male gametes and egg cells of two different plants together. Features of Self Pollinated Flowers 1. Self pollination occurs when the anther and stigma of bisexual flowers mature at the same time. This condition is referred to as homogamy. 2. Self pollination occurs only in bisexual flowers and in unisexual flowers of monoecius plant. The anth...
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