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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 NERVOUS SYSTEM

  NERVOUS SYSTEM  The nervous system is the body's communication network, responsible for transmitting signals and messages between different parts of the body. It is made up of two main parts: the central nervous system (CNS) and the peripheral nervous system (PNS). CENTRAL  NERVOUS SYSTEM  The CNS is comprised of the brain and spinal cord, which work together to control and coordinate the body's functions. The brain is the body's command center, responsible for processing information and sending out signals to the rest of the body. The spinal cord, on the other hand, acts as a conduit for nerve impulses traveling between the brain and the rest of the body. PERIPHERAL NERVOUS SYSTEM  The PNS consists of all the nerves outside of the brain and spinal cord that connect the CNS to the rest of the body. The PNS is further divided into two branches: the somatic nervous system (SNS) and the autonomic nervous system (ANS). The SNS is responsible for voluntary movement...
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BIOLOGY LESSON NOTE ON ENERGY LOSS IN THE ECOSYSTEM

TOPIC: ENERGY LOSS IN THE ECOSYSTEM TIME: 40 minutes Content Objective : By the of the lesson, learner should be able to; Explain energy loss in an ecosystem Relevance of biology to agriculture Summarize the fate of solar energy utilized or lost by primary producers State two laws of thermodynamics Discuss the various applications of laws of thermodynamics to ecological phenomena PREVIOUS KNOWLEDGE: The learners know about energy loss in the ecosystem from their previous lesson  TEACHING AIDS: Research work from the internet, pictures  PROCEDURE: The teacher presents the lesson with the following steps  STEP ONE: Energy flow Energy is lost in the ecosystem during energy flow. Energy flow is the movement of energy or a transfer of energy among organisms in an ecosystem, along the food chain. The flow of energy in an ecosystem is through one direction (unidirectional / non-cyclic) i.e. starting from the producer upwards to the consumers and energy always decreases along the...
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