Control and Coordination Class 10 Handwritten Notes

The Control and Coordination Class 10 Science handwritten notes are scanned, boxed and built for fast last-minute revision, fully matched to the 2026-27 CBSE syllabus. They cover the nervous system, the neuron, reflex action, the human brain, plant movements and hormones, and the human endocrine system, all in clear ruled-page form with labelled diagrams.

• CBSE Weightage: 6 to 8 marks from the World of the Living unit, often as 3-mark and 5-mark diagram questions on the neuron, reflex arc and human brain.
• Boxed definitions and a labelled diagram for every structure, hormone and pathway the board paper asks about.
• Pairs with the NCERT Solutions, Notes and Book PDF linked lower on this page.

These Control and Coordination handwritten notes are prepared from the official NCERT Science textbook and matched to the 2026-27 CBSE syllabus.

What These Control and Coordination Handwritten Notes Include

These Control and Coordination handwritten notes condense the chapter into 22 scanned pages of ruled paper, every diagram hand-drawn and every key term underlined, ideal for a fast recap before the board exam. They are built around the threads the CBSE paper tests:

• The nervous system: the structure of a neuron, how a nerve impulse travels, and the synapse.
• Reflex action and the brain: the reflex arc, the human brain and its parts, and the spinal cord.
• Coordination by chemicals: plant movements and hormones, plus the human endocrine glands and their hormones.

Control and Coordination Class 10 Science Video Lecture

Source: Magnet Brains on YouTube

The Nervous System and the Neuron: The First Pages

The opening pages settle the basic board question: how the body senses a change and responds. Control and coordination is the way an organism senses changes and reacts usefully. The neuron is the working unit; its parts, in the order an impulse passes through them:

• Dendrite: the branched end that picks up the stimulus and starts the impulse.
• Cell body and axon: the impulse travels through the cell body and along the long axon as an electrical signal.
• Nerve ending and synapse: at the axon tip the signal crosses a tiny gap, the synapse, using chemicals.

Information travels as an electrical impulse inside a neuron, but as a chemical signal across the synapse, a guaranteed 2-mark answer.

Reflex Action and the Reflex Arc Every Class 10 Student Must Know

The reflex arc is the most asked 3-mark to 5-mark question in this chapter. The table below traces the path from skin to muscle:

The point students miss: a reflex action is sudden, automatic and does not wait for the brain. It is dealt with by the spinal cord. The two terms the paper asks students to define:

• Reflex action: a quick, automatic response to a stimulus that protects the body from harm.
• Reflex arc: the path the impulse takes, from receptor to sensory neuron to spinal cord to motor neuron to effector.

The Human Brain and Spinal Cord in the Notes

The labelled brain is a top 5-mark diagram. The brain is divided into three parts that the paper asks students to compare:

• Fore-brain (cerebrum): the thinking part; it controls voluntary actions, memory, reasoning and the sense organs.
• Mid-brain and hind-brain: the cerebellum in the hind-brain controls posture and balance, so we can ride a bicycle or walk straight.
• Medulla (in the hind-brain): controls involuntary actions like heartbeat, breathing, blood pressure and vomiting.

The brain sits inside a bony box, the cranium (skull), and the spinal cord runs inside the backbone, both cushioned by a fluid. The brain and spinal cord together make the central nervous system, while the nerves spread through the body make the peripheral nervous system.

Coordination in Plants: Movements and Plant Hormones

Plants respond without a nervous system, using growth and chemicals only, since they have no nerves or muscles. The two types of movement the paper names:

• Tropic movement: directional growth towards or away from a stimulus, like a shoot bending to light (phototropism).
• Nastic movement: a quick, non-directional movement, like Mimosa (touch-me-not) leaves folding when touched.
• Key tropisms: phototropism (light), geotropism (gravity), hydrotropism (water), chemotropism (chemicals).

The four plant hormones the board paper asks students to match:

The favourite exam line: auxin gathers on the shaded side of a shoot, making that side grow faster, so the shoot bends towards the light. This explains phototropism completely, a guaranteed 3-mark answer.

The Human Endocrine System and Hormones

Chemical coordination in animals works through the endocrine glands. Hormones are chemical messengers made by glands, carried by the blood to act on a distant target. The gland-hormone-function match is a guaranteed table question:

One more idea the paper loves: feedback control keeps hormone levels just right. When blood sugar rises, the pancreas makes more insulin; when it falls, less. The key contrast: the nervous system acts fast but briefly, while hormones act slowly but for longer, a common 2-3 mark answer.

How to Use These Handwritten Notes Effectively

Handwritten notes work best as a final layer of revision. Use the Control and Coordination handwritten notes like this before the board exam:

• First pass: read the pages in order, the neuron, then reflex action, then the brain, then plants and hormones.
• Active recall: cover the boxed diagrams and redraw the neuron, reflex arc and human brain from memory.
• Label drill: practise labelling each diagram, because the paper often gives marks for correct labels alone.
• Self-test: attempt a short drill to check the small facts.

Common Mistakes These Notes Help You Avoid

A few errors cost marks every year, mostly from mixing up parts or matching the wrong hormone to a gland:

The exam rewards exact terms and correctly labelled diagrams, so always name the part, state its job and label every line.

How These Notes Pair with the Solutions and Book PDF

These handwritten notes are a revision layer. Use them with the other resources for the same chapter, linked below.

All Class 10 Science Handwritten Notes by Chapter

The table links the handwritten notes for every chapter in Class 10 Science. Control and Coordination is highlighted.

FAQs on Control and Coordination Handwritten Notes