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Showing posts with the label Control and Coordination

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ANATOMY OF FLOWERING PLANTS

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  What is Plant Anatomy? Plant anatomy is the study of internal structure and organization of tissues in plants. It helps in understanding: Functional adaptation Transport system Growth patterns Tissue Organization in Flowering Plants Flowering plants have three major tissue systems :  Epidermal Tissue System Components: Epidermis Single layer of compact cells No intercellular spaces Covered by cuticle (except roots) Cuticle Made of cutin Prevents water loss Stomata Present mainly on leaves Composed of guard cells Regulate: Gas exchange Transpiration Root hairs Extensions of epidermal cells Increase surface area for absorption Trichomes (in stem) Hair-like structures Protection + reduce transpiration  Functions: Protection Water conservation Gas exchange 🌿 B. Ground Tissue System  Types of Ground Tissue: 1. Parenchyma Living cells, thin cell wall Large vacuole Functions: Storage Photosynthesis ( chlorenchyma ) Air storage ( aerenchyma ) 2. Collenchyma Living cell...
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Control and Coordination

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  Visible movements in living organisms are often associated with life. Movements can be a response to changes in the organism's environment. Living organisms use movement to their advantage by adapting to environmental changes. Movement in response to the environment is carefully controlled. Different changes in the environment evoke specific movements in response. Controlled movement is connected to the recognition of various events in the environment. Living organisms rely on systems that provide control and coordination. Specialized tissues are responsible for providing control and coordination in multicellular organisms. 6.1 ANIMALS – NERVOUS SYSTEM Parts of a neuron: (i) Information is acquired at the specialized tips of nerve cells called receptors, located in sense organs such as the inner ear, nose, tongue, etc. (ii) Information travels as an electrical impulse from the dendrite to the cell body and then along the axon. (iii) The electrical impulse is converted into a chem...
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