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BIOLOGY LESSON NOTE ON CROP PROPAGATION

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Topic: Crop Propagation Class: Senior Secondary School 2 (SS2) Subject: Biology Specific Objectives By the end of this lesson, students should be able to: Define crop propagation. Differentiate between sexual and asexual propagation. Identify and explain various methods of crop propagation. Highlight the advantages and disadvantages of each method. Recognize common examples of crops propagated using each method. Lesson Content 1. Meaning of Crop Propagation Crop propagation refers to the process by which plants reproduce or are reproduced to give rise to new plants. This can occur naturally or be carried out artificially by farmers or agricultural scientists. It is a vital practice in agriculture that ensures the continuous production of food and other plant-based resources. 2. Types of Crop Propagation Crop propagation is broadly categorized into two main types: Sexual Propagation (Seed Propagation) Asexual Propagation (Vegetative Propagation) 3. Sexual Propa...
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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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