Life processes Class 10 imp. questions

Life processes Class 10 imp. questions (part 1)

1. State any one difference between autotrophic and heterotrophic modes of nutrition.                                                                                                     
2. Name the process in plants where water is lost as water vapour. (AI 2010)
3. Why do aquatic animals breathe faster than the terrestrial animals?  (CBSE Sample paper 2009)
4. What will happen to a plant if its xylem is removed?                  (Delhi 2009)
5. Name the tissue which transports soluble products of photosynthesis in a plant.                                                                                                         
6. What is the mode of nutrition in human beings?                             (AI 2009)
7. What is the role of saliva in the digestion of food?   
8. Name the tissue which transport water and mineral in a plant.                (Delhi 2008)
9. How do autotrophs obtain CO2 and N2 to make their food?      (AI 2008)
10. Which enzyme present in saliva breaks down starch?       (Foreign 2008)
11. Name the excretory unit of a kidney.                                                (AI 2007)
12. Name the mode of nutrition in Amoeba.                                       
13. Name the respiratory organs of animals like fish that live in water.               
14. Write the mode of nutrition in fungi.                                                
15. Name the vestigial part of human alimentary canal.                                        
16. Name two photosynthetic pigments belonging to chlorophyll.
17. What is photolysis of water?
18. Name the only natural process that gives out oxygen for respiration of all living organisms.
19. What is NADPH?
20. What are the functions of saliva?