Life Processes
- What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining Terrestrial organisms take up oxygen from the atmosphere whereas aquatic animals obtain oxygen from water. Air contains more O₂ as compared... 1
- How is the small intestine designed to absorb digested food? The small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food... 1
- What is the function of digestive enzymes? Digestive enzymes such as amylase, lipase, pepsin, trypsin, etc. help in the breaking down of complex food particles into simple ones. These... 1
- What is the role of the acid in our stomach? Following are the roles of acid in our stomach: The hydrochloric acid present in our stomach dissolves bits of food and creates an acidic me... 1
- Where do plants get each of the raw materials required for photosynthesis? The following raw materials are required for photosynthesis: Carbon Dioxide: Plants get CO₂ from atmosphere through stomata. Water: Plants a... 1
- What are the differences between autotrophic nutrition and heterotrophic nutrition? Autotrophic Nutrition Heterotrophic Nutrition Food is synthesised from simple inorganic raw materials such as CO₂ and water. Food is obtaine... 1
- What processes would you consider essential for maintaining life? Life processes such as nutrition, respiration, transportation, excretion, etc. are essential for maintaining life. 1
- What are outside raw materials used for by an organism? Various outside raw materials used by an organism are as follows: Food as source of supplying energy and materials. Oxygen for breakdown of... 1
- What criteria do we use to decide whether something is alive? Any visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not. However, a living... 1
- Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans? Unlike the unicellular organisms, the multi-cellular organisms have complex body structures with specialized cells and tissues to perform va... 1