CBSE Guess > Papers > Important Questions > Class X > 2008 > Science > Science By :- Nagesh Kumar

Science - Life Processes

1. How does the process of nutrition take place in amoeba? Explain with the help of labeled figures.
2. What is peristaltic movement? How helpful are they in human digestion?
3. How do the alveoli of lungs in human body help in the exchange of gases?
4. Write the methods used by the plants to get rid of excretory products.
5. Sketch a flow diagram for the various pathways for breakdown of glucose.    
6. How are carbohydrates, proteins & fats digested in small intestine?      
7. What do you mean by holozoic nutrition?
8. Give the full forms of ATP and ADP.
9. Describe the structure and functioning of nephron in the human body.
10. Why do herbivores need a longer intestine and the carnivores the shorter one?
11. What are the differences between arteries and veins?
12. Describe what happens to the eaten food in stomach?
13. How does the transportation of food take place in plants?
14. How is lymph formed? Write its functions.
15. What is bile?
16. Why is the rate of respiration faster in aquatic organisms as compared to terrestrial organisms?
17. Draw a well labeled sectional view of human heart showing the passage of flow of blood.
18. Write the basic differences between autotrophic and heterotrophic nutrition.
19. Name and write the function of the enzyme present in human saliva.
20. Why is the process of simple diffusion sufficient for taking in food, exchange of gases and removal of waste in unicellular organism but not sufficient in multicellular organism?
21. What are the events taking place in the process of photosynthesis?
22. Define emulsification
23. Write the values of normal systolic and diastolic pressures in the human body.
24. What are the names of future shoot and future root in a germinating seed?