class x unit test solutions

Questions

1. Define nutrition. Which mode of nutrition is exhibited by fungi?
2. Differentiate b/w autotrophic nutrition and heterotrophic nutrition.
3. Name two features of photosynthesis and write their site.
4. What is the raw material for photosynthesis and from where plant get them?
5. Write the role of acid in stomach.
6. What process would you consider essential for maintaining life?

Solutions

1. The process to transfer the source of energy from outside the body of the organism which we call food,to the inside,i.e the process we call nutrition. The mode of nutrition exhibited by fungi is saprotrophic.
2. Autotrophic- the mode of nutrition in which organisms make their own food for their survival. For eg-plants etc...
   Heterotrophic- the mode of nutrition in which organisms depend upon other organisms for their food. for eg- human beings etc...
3. Two features of photosynthesis are …
   Light phase(light dependent)
   Dark phase(light independent)
4. Raw material for photosynthesis is water ,sunlight and carbon dioxide. plants get them from atmosphere.
5. Acids play a major role in our life. There are many types of acids. Some acids are very good for our health whereas some acids create some painful problems in our stomach. So, it depends upon the type of acid acting in our stomach.
6. Processes essential for maintaining life are nutrition, digestion and other life processes.
   If any doubt please ask..