![]() ![]() Pyruvate is further broken down in the following ways to provide energy: Question 2: What are the different ways in which glucose is oxidized to provide energy in various organisms?Īnswer: Glucose is first broken down in the cell cytoplasm into three carbon molecule called pyruvate. Therefore, unlike aquatic animals, terrestrial animals do not have to show various adaptations for better gaseous exchange. Question 1: What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?Īnswer: Since the amount of dissolved oxygen is fairly low compared to the amount of oxygen in the air, the rate of breathing in aquatic organisms is much faster than that seen in terrestrial organisms. From the bloodstream, the absorbed food is delivered to each and every cell of the body. Within these villi, many blood vessels are present that absorb the digested food and carry it to the bloodstream. ![]() These villi increase the surface area for food absorption. Question 5: How is the small intestine designed to absorb digested food?Īnswer: The small intestine has millions of tiny finger-like projections called villi. These simple particles can be easily absorbed by the blood and thus transported to all the cells of the body. help in the breaking down of complex food particles into simple ones. Question 4: What is the function of digestive enzymes?Īnswer: Digestive enzymes such as amylase, lipase, pepsin, trypsin, etc. Makes the food acidic, so that pepsin can digest protein.Question 3: What is the role of the acid in our stomach?Īnswer: Role of the acid (HCl) in our stomach Sunlight, an important component to manufacture food, is absorbed by the chlorophyll and other green parts of the plants.Water is absorbed from the soil by the plant roots.The raw material CO 2 enters from the atmosphere through stomata.Question 2: Where do plants get each of the raw materials required for photosynthesis?Īnswer: The following raw materials are required for photosynthesis: No pigment is required in this type of nutrition.įood is generally prepared during day time.Īll green plants and some bacteria have this type of nutrition.Īll animals and fungi have this type of nutrition. Presence of green pigment (chlorophyll) is necessary. ![]() This food is broken down with the help of enzymes. Question 1: What are the differences between autotrophic nutrition and heterotrophic nutrition?įood is synthesized from simple inorganic raw materials such as CO 2 and water.įood is obtained directly or indirectly from autotrophs. Question 4: What processes would you consider essential for maintaining life?Īnswer: Life processes such as nutrition, respiration, transportation, excretion, etc. The raw materials required by an organism can be quite varied depending on the complexity of the organism and its environment. Question 3: What are outside raw materials used for by an organism?Īnswer: An organism uses outside raw materials mostly in the form of food (Since life on earth depends on carbon-based molecules, most of these food sources are also carbon-based) and oxygen. Therefore, the presence of molecular movement inside the organisms used to decide whether something is alive or not. However, a living organism can also have movements, which are not visible to the naked eye. Question 2: What criteria do we use to decide whether something is alive?Īnswer: Any visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not. Thus, simple diffusion will not meet the requirements of all the cells. Question 1: Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans?Īnswer: In multi-cellular organisms, all the cells may not be in direct contact with the surrounding environment. NCERT Solutions for Class 10 Science Chapter 5 Intext Questions It is important for the students to go through these NCERT solutions to get knowledge of the type of question asked on the Life Processes chapter. All these NCERT solutions are prepared by expert teachers with detailed explanations of every important topic. NCERT Solutions for Class 10 Science Chapter 5 Life Processes latest edition includes answers of intext & exercise questions.
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