Download Class 10 Biology Concept Summaries: CBSE Class 10 Biology Life Processes Notes Set 03
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Access the complete concept summary PDF for Life Processes below. Regular review of these targeted notes builds familiarity with complex Class 10 Biology themes and helps secure higher marks in final school evaluations.
Transportation in Human Beings
The human transport system has the blood circulatory system (blood, blood vessels, heart) and the lymphatic system. Blood is a fluid connective tissue of about 5 litres in an adult.
| Component | Role |
|---|---|
| Plasma (about 55 percent) | Water with proteins, nutrients, hormones and wastes |
| Red blood cells | Carry oxygen as oxyhaemoglobin, no nucleus |
| White blood cells | Defence against germs, nucleated |
| Platelets | Help in clotting; fibrinogen becomes fibrin and forms the clot |
Heparin prevents clotting inside vessels. Anaemia is caused by a shortage of haemoglobin, so the person feels weak and cannot do heavy work.
| Vessel | Features |
|---|---|
| Artery | Takes blood from the heart, thick elastic wall, narrow lumen, no valves, high pressure |
| Vein | Brings blood to the heart, thin wall, wide lumen, valves present, low pressure |
| Capillary | One cell thick wall, exchange of materials with tissues |
The Heart and Double Circulation
1. The heart has four chambers: right atrium, right ventricle, left atrium, left ventricle. Ventricles have thicker walls because they pump blood out.
2. Right side: deoxygenated blood enters right atrium through venae cavae, passes the tricuspid valve to the right ventricle and goes to the lungs through the pulmonary artery.
3. Left side: oxygenated blood comes through pulmonary veins to the left atrium, passes the bicuspid (mitral) valve to the left ventricle and is pumped into the aorta.
4. Valves stop backward flow of blood.
5. Double circulation (birds and mammals) passes blood twice through the heart: pulmonary circulation (heart-lungs-heart) and systemic circulation (heart-body-heart). Fishes have single circulation with a two chambered heart.
6. Normal blood pressure is 120/80 mm Hg (systolic over diastolic), measured with a sphygmomanometer.
Lymph is a colourless fluid without red cells and platelets that flows only from the tissues towards the heart. It returns tissue fluid, carries digested fats and helps fight infection in lymph nodes.
Transportation in Plants
| Point | Xylem | Phloem |
|---|---|---|
| Carries | Water and minerals | Food made in leaves |
| Direction | Upward | Upward and downward |
| Cells | Vessels, tracheids, fibres, parenchyma (only parenchyma living) | Sieve tubes, companion cells, parenchyma, fibres |
| Driving force | Root pressure and transpiration pull | Pressure from osmosis after loading sugar with ATP |
Root hairs absorb water by osmosis. In short plants root pressure can push water up, but in tall trees transpiration pull from the leaves, helped by cohesion of water molecules, lifts the water. About 80 to 90 percent of transpiration is through stomata. Transpiration also cools the plant. Movement of food through the phloem is called translocation.
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Revision Notes and Key Concepts for Class 10 Biology Life Processes
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You can download the teacher prepared revision notes for CBSE Class 10 Biology Life Processes Notes Set 03 from StudiesToday.com. These notes are designed as per 2026-27 academic session to help Class 10 students get the best study material for Biology.
Yes, our CBSE Class 10 Biology Life Processes Notes Set 03 include 50% competency-based questions with focus on core logic, keyword definitions, and the practical application of Biology principles which is important for getting more marks in 2026 CBSE exams.
Yes, our CBSE Class 10 Biology Life Processes Notes Set 03 provide a detailed, topic wise breakdown of the chapter. Fundamental definitions, complex numerical formulas and all topics of CBSE syllabus in Class 10 is covered.
These notes for Biology are organized into bullet points and easy-to-read charts. By using CBSE Class 10 Biology Life Processes Notes Set 03, Class 10 students fast revise formulas, key definitions before the exams.
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