1. Define nutrition.
2. Why one is not advised to sleep under a tree during night?
3. Mention two differences between:
a. Respiration and breathing
b. Respiration and photosynthesis
c. Food pipe and wind pipe
4. Boojho and Paheli were eating their food hurriedly so that they could go out and play during the recess. Suddenly, Boojho started coughing violently. Think of the reasons why he was coughing?
5. Humans can also prepare food in the kitchen. Are they autotrophs? Give reasons.
6. Explain the two types of nutrition.
7. Identify the small pores which are present on surface of plants through which gaseous exchange occurs? Is respiration take place only in leaves? Explain.
8. Respiration is a continuous process. What is the need for it to be continuous rather than being like photosynthesis?
Answers
Answer:
nutrition - Medical Definition
The process of nourishing or being nourished, especially the process by which a living organism assimilates food and uses it for growth and for replacement of tissues. The science or study that deals with food and nourishment, especially in humans. A source of nourishment; food.
Answer:
ANSWERS ARE GIVEN BELOW
Explanation:
1. Nutrition is the process by which an organism takes food and utilizes it to get energy, for growth, repair, maintenance, etc. and then excreting the waste material from the body.
2. During the day, carbon dioxide is used by the photosynthesis. That is, the plants leave carbon dioxide at night. On the basis of this it is that in the night if you sleep under the tree, you will not get oxygen, which can cause breathing problem, suffocation etc.
3. a. Breathing is the physical process where you inhale and exhale air in and out of your lungs. ... Respiration is a chemical reaction where Oxygen is used to breakdown Glucose in order to generate energy which is then used by the cell to function.
3. b. Photosynthesis utilizes carbon dioxide and water in the presence of light to produce glucose and oxygen, whereas respiration uses oxygen and glucose to power the activities of the cell.
3. c. Food pipe is used to carry food to stomach and wind pipe is used to carry air to lungs.
4. He started coughing because the food accidentally went into the wind pipe instead of the food pipe.
5. No, because the get resources from other organisms. for example humans dont make vegetables, they get them from plants.
6. Autotrophic nutrition is a process in which the organism produces their food from the simple inorganic materials such as water, carbon dioxide and mineral salts in the presence of sunlight. Heterotrophic nutrition is nutrition obtained by digesting organic compounds.
7. Stomata. No respiration takes place in all parts of plant. In roots through diffusion. In woody plant stems through lenticels.
8. Process of respiration yields energy which is required to perform a variety of routine activities whereas photosynthesis provides food. Thus, it needs to be a continuous process.
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