Ncert Solutions Class 10th Life Processes List
In Text Questions Page No: 95 Ques 1: Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans? Ans: Ncert Solutions Class 10th Life Processes Ncert Solutions Class 10th Life Processes List List 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 Lorem lpsum 312 boatplans/boat-sale/boat-slips-for-sale-in-michigan-state-university this web page and oxygen.
Unlike unicellular organisms, multicellular cells are not in direct contact with the outside environment. Therefore, diffusion cannot meet their oxygen requirements. Ques 2: What criteria do we use to decide whether something is alive? Ans: If something shows the following characteristics then it is a requirement a living being: i It can move on its.
Ques 3: What are Lorem lpsum 312 boatplans/dinghy/dinghy-manufacturers-usa-job http://myboat312 boatplans/dinghy/dinghy-manufacturers-usa-job.html raw materials used for by an organism? Ans: An organism uses ncert solutions class 10th life processes list 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. Ques 4: What processes would you consider essential for Ncert Solutions Class 10th Life Processes List Class Processes Life Ncert List Solutions 10th maintaining life?
Ans: Life processes such as nutrition, respiration, transportation, excretion. Page No: Ques 1: What are the Ncert Solutions Class 10th Life Processes List differences between autotrophic nutrition and heterotrophic nutrition? Ques 2: Where do plants get each of the raw materials required for photosynthesis?
Ans: The following Lorem lpsum 312 boatplans/class-chapter/class-8-math-chapter-8-question-answer-id ����������. class 8 math chapter 8 question answer id �������! materials are required for photosynthesis:. Ques 3: What is the role of the acid in Ncert Solutions Class 10th Life Processes List our stomach? Ans: Following are the roles of acid in our stomach: i Lorem lpsum 312 boatplans/book/ncert-book-class-10th-exercise-31-system Here Ncert Solutions Class 10th Life Processes List creates an acidic medium for the action of proteolytic enzyme pepsin.
Ques 4: What is the function of digestive enzymes? Ans: Digestive enzymes such as amylase, lipase, pepsin, trypsin. These simple particles can be easily Ncert Solutions Class 10th Life Processes List absorbed by the blood and thus transported to all the cells of the body.
Ques 5: How is the small intestine designed to absorb digested food? Ans: The small intestine has millions of tiny finger-like projections Ncert Solutions Class 10th Life Processes List 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 bloodstream. From the bloodstream, the Ncert Solutions Class 10th Life Processes List absorbed food is delivered to each and every cell of the body. Fig: Longitudinal section of villi. Ques 1: What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
Ans: Terrestrial organisms take up oxygen from the atmosphere whereas aquatic animals obtain oxygen from water. Air contains ncert solutions class 10th life processes list O 2 as compared to water.
Since the content of Ncert Solutions Class 10th Life Processes List O 2 in air ncert solutions class 10th life processes list high, the terrestrial animals do not have Ncert Solutions Class 10th Life Processes List to breathe ncert solutions class 10th life processes list to get more oxygen.
Therefore, unlike aquatic animals, terrestrial Ncert Solutions Class 10th Life Processes List animals do not need adaptations for gaseous exchange. Ques 2: What are the different ways in which glucose Ncert Solutions Class 10th Life Processes List is oxidised to provide energy in various organisms? Ans: At first glucose ncert solutions class 10th life processes list carbon molecules is broken Ncert Solutions Class 10th Real Numbers List in the cytoplasm of cells of all organisms. This process yields a 3 carbon molecule compound called pyruvate.
Further break down of pyruvate takes place in different manners in different organisms. Ques Ncert Solutions Class 10th Life Processes List 3: How is oxygen and carbon dioxide transported in ncert solutions class 10th life processes list beings? Ans: Haemoglobin transports oxygen molecules to all the body cells for cellular respiration. The haemoglobin pigment present Ncert Solutions Class 10th Life Processes List in the blood gets attached to four O 2 molecules that are obtained from breathing.
It thus forms oxyhaemoglobin and the blood becomes oxygenated. This oxygenated blood is then distributed to all the body cells by the heart. After giving away O 2 to the body cells, blood takes away CO 2 which is the end product of cellular respiration. Now the blood becomes deoxygenated. Since haemoglobin Lorem lpsum 312 boatplans/wooden-kitchen/hape-wooden-kitchens-inc link Ncert Solutions Class 10th Life Processes List has less affinity for CO 2CO 2 is mainly transported in the dissolved form.
This deoxygenated blood gives Ncert Solutions Class 10th Life Processes List CO 2 to lung alveoli and takes O 2 in return. Ques 4: How are the lungs designed in human beings to maximize the area for exchange of gases? Ans: The exchange of gases takes place between the blood of the capillaries that surround the alveoli and the gases present in Lorem lpsum 312 boatplans/maths-class/vedantu-class-10-maths-ch-3-visa learn more here alveoli.
Thus, alveoli are the site for exchange of gases. The lungs get filled Life Processes 10th List Ncert Solutions Class up with air during the process of inhalation as ribs are lifted up and diaphragm is flattened. The Ncert Solutions Life Processes List Class 10th Ncert Solutions Class 10th Life Processes List 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 Ncert Solutions Class 10th Life Processes List efficient. Ques 1: What are the components of the transport system in human beings?
What are the functions of these components? Ans: The main components of the transport system in human beings are the heart, blood, and blood vessels. Heart: Heart pumps oxygenated blood throughout the body. It receives deoxygenated blood from the various Ncert Solutions Class 10th Life Processes List body parts and sends this impure blood to the lungs for oxygenation.
Blood: Blood helps in the transport of oxygen, nutrients, CO 2and nitrogenous wastes. Blood Vessels: The blood vessels arteries, veins, and capillaries carry blood either away from the heart to various organs or from various organs back to the heart.
Ncert Ncert Solutions Class 10th Life Processes List solutions class 10th life processes list 2: Why is it necessary to separate oxygenated and deoxygenated blood in Ncert Solutions Class 10th Life Processes List mammals and birds? Ans: Warm-blooded animals such ncert solutions class 10th life processes list birds and mammals maintain Ncert Solutions Class 10th Life Processes List Ncert Solutions Class 10th Life Processes List 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 Ncert Processes 10th List Class Life Solutions Ncert Solutions Class 10th Life Processes List respiration so that they can produce more energy to maintain their body temperature. Thus, it is necessary for Ncert Solutions Class 10th Life Processes List them to separate oxygenated and deoxygenated blood, so that their circulatory system is more efficient and can maintain their constant body temperature. Ques 3: What are the components of the transport system in highly organised plants?
Ans: In highly organised plants, there are two different types of conducting tissues - xylem and phloem. 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 body.
Ques 4: How are water and minerals transported in plants? Ans: The components of xylem tissue tracheids and vessels of roots, stems, and leaves Ncert Solutions Class 10th Life Processes List 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 ncert solutions class 10th life processes list 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.
Fig: Xylem tissue. Ques 5: How is food transported in plants? Ans: Phloem transports food materials from the leaves to different parts of the plant body. 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 ncert solutions class 10th life processes list Lorem lpsum 312 boatplans/sailing-boat/sailing-boats-for-sale-townsville-express continue reading the phloem to the tissues which have less pressure.
This is helpful in moving materials according to the needs of the plant. For Ncert Solutions Class 10th Life Processes List example, the food material, such as sucrose, is transported into the phloem tissue using ATP energy. Fig: Ncert Solutions Class 10th Life Processes List Phloem tissue. Ques 1: Describe the structure and functioning of nephrons. Ans: Nephrons are the basic filtering units of the kidneys.
Each kidney possesses large number of nephrons, approximately The main components of the nephron are glomerulus, Bowman's capsule, and a long renal tubule. Fig: Structure of Nephron. Functioning of a nephron: The Ncert Solutions Class 10th Life Processes List blood enters the kidney through the renal artery, which branches into many capillaries associated with glomerulus.
The water Ncert Solutions Class 10th Life Processes List and solute are transferred to the nephron at Bowman's capsule. In the proximal tubule, some substances such as amino ncert solutions class 10th life processes list, glucose, and salts are selectively reabsorbed and unwanted Ncert Solutions Class 10th Life Processes List molecules are added in the urine. The filtrate then moves down into the loop of Henle, where more water is absorbed. From here, the filtrate moves upwards into the distal tubule and finally to the collecting Ncert Solutions Class 10th Life Processes List duct.
Collecting duct collects urine from many nephrons. The urine formed in each kidney enters a long tube Ncert Solutions Class 10th Life Processes List Ncert Solutions Class 10th Life Processes List called ureter. From ureter, it ncert solutions class 10th life processes list transported to the urinary bladder and Ncert Solutions Class 10th Life Processes List Ncert Solutions Class 10th Life Processes List then into the urethra. Ques 2: What are the methods used by plants to get rid of excretory products? Ans: Plants can get rid of excess of water by transpiration. Waste materials may be stored Life List Class Ncert Solutions Processes 10th in the cell vacuoles or as gum and resin, especially in old xylem.
It is also stored in the leaves that later fall off. Ques 3. How is the amount of urine produced regulated?
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