Ncert Solutions For Class 10th Ch 6 Life Processes Science Service,Paintings Of Small Fishing Boats 02,One Off Fiberglass Boat Building You - For Begninners

NCERT Solutions Class 10 Science Chapter 6 Life Process - Download Free PDFs

Why is diffusion insufficient to meet the oxygen requirementsof multi-cellular organisms like humans? Multicellular organisms such as humans possess complex body designs.

They have specialised cells and tissues for performing various necessary functions of the body such as intake of food and oxygen. Unlike unicellular organisms, multicellular cells are not in direct contact with the outside environment.

Therefore, diffusion cannot meet their oxygen requirements. Any visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not. However, a living organism can also have movements, ncert solutions for class 10th ch 6 life processes science service are not visible to the naked eye.

Therefore, the presence of life processes is a fundamental criterion that can be used to decide whether something is alive or not. An organism uses outside raw materials mostly in the form of food and oxygen. The raw materials required by an organism can be quite varied depending on the complexity of the organism and its environment. Life processes such as nutrition, respiration, transportation, excretion. Following are the roles of acid in our stomach: 1.

The hydrochloric acid present in our stomach dissolves bits of food and creates an acidic medium. In this acidic medium, enzyme pepsinogen is converted to pepsin, which is a protein-digesting enzyme. The hydrochloric acid kills the harmful microbes that enter with food and thus prevents infection of digestive tract.

Digestive enzymes such as amylase, lipase, pepsin, trypsin. These simple particles can be easily absorbed by the blood and thus transported to all the cells of the body. The small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food absorption. Within these villi, many blood vessels are present that absorb the digested food and carry it to the blood stream.

From the blood stream, the absorbed food is delivered to each and every cell of the body. What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration? Terrestrial organisms take up oxygen from the atmosphere whereas aquatic animals need to utilize oxygen present in the water. Air contains more O 2 as compared to water. Since the content of O 2 in air is high, the terrestrial animals do not have to breathe faster to get more oxygen.

Therefore, unlike aquatic animals, terrestrial animals do not have to show various adaptations for better gaseous exchange. Glucose is first broken down in the cell cytoplasm into a three carbon molecule called pyruvate. Pyruvate is further broken down by different ways to provide energy. In yeast and human muscle cells, the breakdown of pyruvate occurs in the absence of oxygen whereas in mitochondria, the breakdown of pyruvate occurs in the presence of oxygen.

The exchange of gases takes place between the blood of the capillaries that surround the alveoli and the gases present in the alveoli. Thus, Ncert Solutions For Class 10th Science Chapter 9 North alveoli are the site for exchange of gases. The lungs get filled up with air during the process of inhalation as ribs are lifted up and diaphragm is flattened. The air that is rushed inside the lungs fills the numerous alveoli present in the lungs. Each lung contains million alveoli. These numerous alveoli increase the surface area for gaseous exchange making the process of respiration more efficient.

What are the components of the transport system in human beings? What are the functions of these components? The main components of the transport system in human beings are the heart, blood, and blood vessels. Warm-blooded animals such as birds and mammals maintain a constant body temperature by cooling themselves when they are in a hotter environment and by warming their bodies when they are in a cooler environment.

Hence, these animals require more oxygen O 2 for more cellular respiration so that they can produce more energy to maintain their body temperature. Thus, it is necessary for them to separate oxygenated and de-oxygenated blood, so that their circulatory system is more efficient and can maintain their constant body temperature.

Xylem conducts water and minerals obtained from the soil via roots to the rest of the plant. Phloem transports food materials from the leaves to different parts of the plant ncert solutions for class 10th ch 6 life processes science service. The components of xylem tissue tracheids and vessels of roots, stems, and leaves are interconnected to form a continuous system of water-conducting channels that reaches all parts of the plant.

Transpiration creates a suction pressure, as a result of which water is forced into the xylem cells of the roots. Then there is a steady movement of water from the root xylem to all the plant parts through the interconnected water-conducting channels. The transportation of food in phloem is achieved by utilizing energy from ATP. As a result of this, the osmotic pressure in the tissue increases causing water to move into it. This pressure moves the material in the phloem to the tissues which have less pressure.

This is helpful in moving materials according to the needs of the plant. For example, the food material, such as sucrose, is transported into the ncert solutions for class 10th ch 6 life processes science service tissue using ATP energy. Nephrons are the basic filtering units of kidneys. Each kidney possesses large number of nephrons, approximately Plants can get rid of excess of water by transpiration.

Waste materials may be stored in the cell vacuoles or as gum and resin, especially in old xylem. It is also stored in the leaves that later fall off. The amount of urine produced depends on the amount of excess water and dissolved wastes present in the body. Some other factors such as habitat of an organism and hormone such as Anti-diuretic hormone ADH also regulates the amount Ncert Solutions For Class 10th Social Science In Hindi Site of urine produced.

Fats are present in the form of large globules in the small intestine. The ncert solutions for class 10th ch 6 life processes science service intestine gets the secretions in the form of bile juice and pancreatic juice respectively from the liver and the pancreas. The bile salts from the liver break down the large fat globules into smaller globules so that the pancreatic enzymes can easily act on. This is referred to as emulsification of fats.

It takes place in the small intestine. Saliva is secreted by the salivary glands, located under the tongue. It moistens the food for easy swallowing. It contains a digestive enzyme called salivary amylase, which breaks down starch into sugar.

Autotrophic nutrition takes place through the process of photosynthesis. Carbon dioxide, water, chlorophyll pigment, and Ncert Solutions For Class 10th Science Chapter 4 Read sunlight are the ncert solutions for class 10th ch 6 life processes science service conditions required for autotrophic nutrition. Carbohydrates food and O 2 are the by-products of photosynthesis. What are the differences between aerobic and anaerobic respiration?

Name some organisms that ncert solutions for class 10th ch 6 life processes science service the anaerobic mode of respiration. Anaerobic respiration occurs in the roots of some waterlogged plants, some parasitic worms, animal muscles, and some micro-organisms such as yeasts. The alveoli are the small balloon-like structures present in the lungs.

The walls of the alveoli consist of extensive network of blood vessels. The alveolar surface when spread out covers about 80 m 2 area.

This large surface area makes the gaseous exchange more efficient. Haemoglobin is the respiratory pigment that transports oxygen to the body cells for cellular respiration. Therefore, deficiency of haemoglobin in blood can affect the oxygen supplying capacity of blood. This can lead to deficiency of oxygen in the body cells. It can also lead to a disease called anaemia. The separation of oxygenated and de-oxygenated blood allows a more efficient supply of oxygen to the body cells.

This efficient system of oxygen supply is very useful in warm-blooded animals such as human beings. As we know, warm-blooded animals have to maintain a constant body temperature by cooling themselves when they are in a hotter environment and by warming their bodies when they are in a cooler environment.

Hence, ncert solutions for class 10th ch 6 life processes science service require more O 2 for more respiration so that they can produce more energy to maintain their body temperature. Thus, the circulatory system of humans is more efficient because of the double circulatory heart. Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning. It also contains a cluster of thin-walled capillaries.

Then the filtrate moves through the proximal tubule and then down into the loop of henle. The collecting duct collects the urine from many nephrons and passes it to the ureter. During the flow of filtrate, some substances such as glucose, amino acids, and water are selectively re-absorbed. Answers are excellent and we can understand very easily and also can get very good in our board exams.

Class Page No Question 1: Why is Ncert Solutions For Class 10th Science Chapter 9 Level diffusion insufficient to meet the oxygen requirementsof multi-cellular organisms like humans? Answer: Multicellular organisms such as humans possess complex body designs. Question 2: What criteria do we use ncert solutions for class 10th ch 6 life processes science service decide whether something is alive? Answer: Any visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not.

Question 3: What are outside raw materials used for by an organism? Answer: An organism uses outside raw materials mostly in the form of food and oxygen. Question 4: What processes would you consider essential for maintaining life?


Other State Boards. Concept insight: Students should know the necessary conditions required for photosynthesis and the products formed during this process. Nutrition b. This material is taken in the form of carbon dioxide and water, which is converted into carbohydrates in the presence of sunlight and chlorophyll. How they get carbon dioxide for photosynthesis?


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