Chapter 7: Control and Coordination – Explained Simply!
Chapter 7: Control and Coordination – Explained Simply! Class 10 | NCERT Science Ever wondered how your body knows when to move your hand away from a hot object instantly ? Or how plants bend towards light? That’s control and coordination in action – a fascinating blend of science, biology, and life! Let’s break it down: 1. Control and Coordination in Organisms: Life is full of changes. Organisms need to respond to stimuli – and for that, they require control and coordination. This is managed by two major systems: • Nervous system (via neurons) • Endocrine system (via hormones) 2. What is a Neuron? Neurons are the building blocks of the nervous system. Structure: • Cell Body – Contains nucleus • Dendrites – Receive signals • Axon – Transmits signals Together, they send messages at lightning speed! 3. Reflex Actions – The Body’s Emergency Moves A reflex action is a quick, involuntary response to a stimulus (like pulling your hand away from fire). T...