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Get FREE Chapter 5 Life Processes Class 10 Notes PDF, perfect for quick revision and exam preparation. Download Now!
Aug 12, 2024 · CBSE Class 10 Science Notes Chapter 6 Life Processes Biology Pdf free download is part of Class 10 Science Notes for Quick Revision. Here we have given NCERT Class 10 Science Notes Chapter 6 Life Processes. According to new CBSE Exam Pattern, MCQ Questions for Class 10 Science pdf Carries 20 Marks. You can aslo read Life Processes Class 10 ...
Life Processes Class 10 Notes: Here, you will get Life Processes Revision Notes for Class 10 PDF Format for Free of Cost. You can also download CBSE Class 10 Life Processes Handwritten and Short Notes to get higher marks.
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- Respiration
- Transportation in Human Beings
- Transportation in Plants
- Excretion in Humans
Introduction to Respiration
1. Respiration broadly means the exchange of gases. 2. Animals and plants have different means of exchange of gases. 3. At a cellular level, respiration means the burning of food to generate the energy needed for other life processes. 4. Cellular respiration may take place in the presence or absence of oxygen.
Respiration in Humans
1. The human respiratory system is more complex and involves breathing, the exchange of gases and cellular respiration. 2. A well-defined respiratory system helps with breathing and the exchange of gases. 3. Breathing involves the inhalation of oxygen and the exhalation of carbon dioxide. 4. The gaseous exchange takes place in the lungs, and oxygen is supplied to all cells of the body. 5. Cellular respiration takes place in each and every cell.
Respiratory System
1. The human respiratory system involves the nose, nasal cavities, pharynx, larynx, trachea/windpipe, bronchi, bronchioles and alveoli. 2. Bronchioles and alveoli are enclosed in a pair of lungs. 3. The rib cage, muscles associated with the rib cage and diaphragm all help in the inhalation and exhalation of gases. 4. The exchange of gases takes place between an alveolar surface and surrounding blood vessels. 5. Alveoli provide a large surface area for the exchange of gases.
Transportation
1. All living organisms need a few necessary components like air, water, and food for their survival. 2. On a regular basis, animals ensure these elements by breathing, drinking and eating. 3. The required elements are transported to their body cells and tissues by a transportation system. 4. In plants, the vascular tissue is responsible for transporting the substances.
Transportation in Humans
1. Transportation in humans is done by the circulatory system. 2. The circulatory system in humans mainly consists of blood, blood vessels and the heart. 3. It is responsible for the supply of oxygen and nutrients and the removal of carbon dioxide and other excretory products. 4. It also helps to fight infections.
Heart
1. The muscular organ which is located near the chest, slightly towards the left in the thoracic region. 2. The heart is the main pumping organ of the body. 3. The human heart is divided into four chambers which are involved in the transportation of oxygenated and deoxygenated blood. 4. The upper two chambers are called atria, whereas the lower two chambers are called ventricles. To know more about Human Heart, visit here. 1. The flow of blood through the heart is as follows:
Transportation in Plants
1. Transportation is a vital process in plants. 2. The process involves the transportation of water and necessary nutrients to all parts of the plant for its survival. 3. Food and water transportation takes place separately in plants. 4. Xylem transports water, and phloem transports food. To know more about Transportation in Plants, visit here.
Phloem
1. The phloem is responsible for the translocation of nutrients and sugar, like carbohydrates, produced by the leaves to areas of the plant that are metabolically active. 2. Sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells are the components of this tissue. 3. The flow of material through the phloem is bidirectional.
Translocation
1. The transport of food in the plant through phloem via a process such as mass flow is called translocation. 2. Photosynthates, i.e. sugars and organic molecules such as amino acids, organic acids, proteins and inorganic solutes like potassium, magnesium, nitrate, calcium, sulfur and iron from source tissues (mature leaves) to the sink cells (areas of growth and storage) are transported through the phloem. 3. Material like sucrose is loaded from leaves to phloem using the energy of ATP. 4. S...
Excretion
1. Organisms like animals have an advanced and specialized system for excretion. 2. But plants lack a well-developed excretory system like that in animals. 3. They do not have special organs for excretion, and thus excretion in plants is not so complex.
Excretion in Unicellular Organisms
1. In unicellular organisms such as amoeba and bacteria, the waste product is removed by simple diffusion through the general body surface. 2. Unicellular organisms like the amoeba and paramecium excrete excess through tiny organelles called contractile vacuoles. 3. Undigested food in unicellular animals is excreted when the food vacuole merges with the general body surface and opens to the outside.
Excretory System of Humans
1. The excretory system in humans includes 1.1. a pair of kidneys, 1.2. a pair of ureters, 1.3. a urinary bladder and 1.4. urethra. 2. It produces urine as a waste product. To know more about Human Excretory System, visit here.
Free Resources CBSE Class 10. English Language & Literature. Mathematics. Science. Social Science.
design in multi-cellular organisms are followed, a specialised tissue for excretion will be developed, which means that the transportation system will need to transport waste away from cells to this excretory tissue. Let us consider these various processes, so essential to maintain life, one by one.
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