Life Processes

Life Processes

1. The undigested material is removed from the body via ...... . Answer : anus 2. By which respiratory process is...

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1. What is photosynthesis? Explain its mechanism. Answer : Green plants, known as autotrophs, produce their own foo...

2. What are outside raw materials used by an organism? Answer : The important outside raw materials used by an or...

3. What is the role of the acid in our stomach? Answer : Hydrochloric acid which is secreted in our stomach has fo...

4. What advantage over an aquatic organism does a terrestrial organism have with regards to obtaining oxygen for respira...

5. What are the components of the transport system in highly organised plants? Answer : Highly organized plants...

6. Define the term transpiration. Design an experiment to demonstrate this process. Answer : Transpiration is w...

7. How are the lungs designed in human beings to maximise the area for exchange of gases? Answer : Lungs are like...

8. (i) Explain the excretory system in human beings. (ii) List four strategies used by plants for excretion. Answ...

9. How is oxygen and carbon dioxide transported in human beings? Answer : During breathing in, oxygen travels th...

10. Name the following: (i) Mode of nutrition of the cuscuta plant. (ii) First form of food substance produced during...

11. Where do plants get each of the raw materials required for photosynthesis? Answer : The following raw materia...

12. How is the amount of urine produced regulated? Answer : The volume of urine made is based on the surplus water...

13. A major portion of the carbohydrates produced by plants is stored in different parts of the plant (storage organs)....

14. How does transpiration help in upward movement of water from roots to leaves? Answer : Water moves through the...

15. What would be the consequences of deficiency of haemoglobin in the body? Answer : Haemoglobin is a substance i...

16. Explain the process of transport of oxygenated and deoxygenated blood in a human body. Answer : The human cir...

17. What are the components of the transport system in human beings? What are the functions of these components? An...

18. What is the function of digestive enzymes? Answer : Digestive enzymes are special substances that speed up the...

19. How is the small intestine designed to absorb digested food? Answer : The small intestine is where most of t...

20. How do the guard cells regulate opening and closing of stomatal pores? Answer : Guard cells are shaped like kid...

21. What are the adaptations of a leaf for photosynthesis? Answer : Some ofthe adaptations of a leaf for photosynt...

22. What process would you consider essential for maintaining life? Answer : Processes such as eating, breathing,...

23. What are the necessary conditions for autotrophic nutrition and what are its byproducts? Answer : Autotrophi...

24. How are fats digested in our bodies? Where does this process take place? Answer : In the small intestine, fat...

25. What is the role of saliva in the digestion of food? Answer : Saliva comes from the salivary glands. It has a...

26. What are the different ways in which glucose is oxidised to provide energy in various organisms? Answer : Gl...

27. What is transpiration? List its two functions. Answer : Transpiration is when water evaporates from a plant'...

28. Answer the following questions: (i) What is translocation? Why is it essential for plants? (ii) Where do the sub...

29. List two types of the transport system in human beings and write the functions of any one of these. Answer : T...

30. What are the methods used by plants to get rid of excretory products? Answer : The methods used by plants to...

LONG ANSWER TYPES QUESTION (LAQ)

1. Describe the alimentary canal of human beings. Answer : The alimentary canal of human beings start with mouth an...

2. (i) How does Paramecium obtain is food? (ii) List the role of each of the following in our digestive system: (a)...

3. Explain the process of breathing in human beings. Answer : Breathing process occurs by inhalation and exhalation...

4. Describe the internal structure of human heart. Answer : i. The human heart has four chambers. The top two cha...

5. Explain the mechanism of photosynthesis. Answer : Photosynthesis is how plants make their own food. It happens...

6. Explain the nutrition process in amoeba. Answer : Amoeba follows holozoic nutrition. It involves the following s...

7. Describe the flow of blood in human heart with proper diagram. Answer : Blood goes through our heart two times,...

9. How are water and minerals transported in plants? Answer : Plants use a system called xylem to move water and m...

10. How is food transported in plants? Answer : Translocation is the movement of food from the leaves to other par...

11. (a) Write two water conducting tissues present in plants. How does water enter continuously into the root xylem?...

12. Describe the structure and functioning of nephrons? Answer : Nephron is the structural and functional unit o...

13. Describe the process of urine formation in kidneys. Answer : Urine formation occurs in three steps : 1. Ultraf...

14. Describe the excretory system in human beings. Answer : The human excretory system includes two kidneys, two u...

15. Answer the following questions: (i) Mention any two components of blood. (ii) Trace the movement of oxygenated b...

16. (a) Why is nutrition necessary for the human body? (b) What causes movement of food inside the alimentary canal?...

17. Explain how the translocation of materials in phloem tissue in plants is achieved by utilising energy. Answer...

NCERT SOLUTION

Page Number 95 1. Why is diffusion insufficient to meet the oxygen requirements of mult...

Page Number 101 1. What are the differences between autotrophic nutrition and heterotro...

2. Where do plants get each of the raw materials required for photosynthesis? Answer : Plants obtain t...

Page Number 105 1. What advantage over an aquatic organism does a terrestrial organism...

Page Number 110 1. What are the components of the transport system in human beings? Wha...

Page Number 112 1. Describe the structure and functioning of nephrons. Answer...

Page Number 113 1. The kidneys in human beings are a part of the system for (a) nut...

Page No. 140 12. What are the differences between the transport of materials in the xyl...

Page No. 140 13. Compare the functioning of alveoli in the lungs and nephrons in the ki...