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Control & Coordination
High trendapprox. 6 marksSections C/D — reflex arc diagrams, hormones table and tropisms in plants.
CBSE 2027 — dates, rules and official papers →Ask the tutor1Use direction arrows on neuron and reflex-arc diagrams; unmarked arrows lose the diagram mark.
Notesformulae · proofs · mind-map — one view
Learn the 6 conceptsteach yourself first, then practise each
Reflex arc (sensory → spinal cord → motor)3–5 marks Visual
Trace the pathway with arrows; explain why the brain is bypassed.
Structure of a neuron (dendrite, cell body, axon, synapse)2–3 marks
Label the parts and state the direction of impulse flow.
Human endocrine glands and their hormones2–3 marks
Match gland → hormone → one function for each major gland.
Tropisms in plants (phototropism, geotropism, hydrotropism, chemotropism)1–2 marks Visual
Identify the stimulus and the direction of growth.
Plant hormones (auxin, gibberellin, cytokinin, abscisic acid) and their roles2–3 marks Visual
Match each hormone to growth, cell division or inhibition, and explain how auxin bends a shoot towards light.
Voluntary, involuntary and reflex actions2–3 marks
State which part of the nervous system controls each and why a reflex bypasses the brain.
When you’re ready — practise or test the whole topic