Control and Coordination — Class 10 Science MCQs

NCERT | CBSE Curriculum

Practice 100+ MCQs on Control and Coordination for Class 10.
Nervous system, neuron, reflex action, human brain, hormones, insulin & adrenaline.
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Quick Revision: Control and Coordination

  • Neuron Structure: Dendrite (receives), Cell body, Axon (transmits), Synapse (junction).
  • Reflex Action: Rapid, automatic response via spinal cord (e.g., knee jerk).
  • Brain Parts: Cerebrum (thinking), Cerebellum (balance), Medulla (involuntary actions).
  • Plant Hormones: Auxin (growth), Gibberellin (stem elongation), Cytokinin (cell division), Abscisic acid (stress), Ethylene (ripening).
  • Plant Movements: Tropism (directional) – Phototropism (light), Geotropism (gravity), Hydrotropism (water), Chemotropism (chemicals).
  • Nastic Movements: Non-directional, e.g., Mimosa leaf closure (thigmonasty).
  • Endocrine Glands: Pituitary (master gland), Thyroid (metabolism), Adrenal (adrenaline), Pancreas (insulin).
  • Key Hormones: Insulin (lowers blood sugar), Adrenaline (fight/flight), Thyroxine (metabolism), Growth hormone (height).
  • Feedback Mechanism: Hormone regulation e.g., High thyroxine inhibits TSH secretion.
  • Nervous vs Endocrine: Nervous – fast, electrical; Endocrine – slow, chemical.
  • Iodine & Goitre: Iodine deficiency → low thyroxine → thyroid enlargement (goitre).
  • Spinal Cord: Protected by vertebral column; center for reflex arcs.
  • Hypothalamus: Links nervous & endocrine systems; controls pituitary.
  • Receptors: Gustatory (taste), Olfactory (smell), Photoreceptors (light).
  • Autonomic Nervous System: Controls involuntary functions; sympathetic (action), parasympathetic (rest).

External Resources: Byjus - Control and Coordination | Khan Academy - Nervous System

Chapter Summary: Control and Coordination

Control and Coordination MCQ Class 10 unlocks how living organisms detect changes and respond effectively. We explore the human nervous system—from neurons and reflex arcs to brain regions and their functions. We also dive into plant movements and hormones, understanding how they grow toward light or away from gravity.

We study the endocrine system—the chemical messengers like insulin, adrenaline, thyroxine, and growth hormone that regulate everything from blood sugar to stress responses. We also learn about feedback mechanisms that maintain homeostasis and the differences between nervous and hormonal coordination.

This high-scoring, diagram-rich chapter demands clarity on reflex arcs, brain parts, plant tropisms, hormone functions, and clinical disorders (e.g., diabetes, goitre). Regular practice builds confidence in answering theory, diagram-based, and application-oriented questions.