Form 2 Integrated Science

   Integrated Science 
(12:56:48 2010-10-02) Diagrams you should know:
Diagram of the internal structure of a dicotyledonous seed 
NB: The structure labeled 'hypocotyl-radicle axis' is simply the 'radicle'.  
Diagram of the internal structure of a monocotyledonous seed 
Diagram of the flower structure  
Diagram of the external structure of the leaf  
NB: Another name for:
  • 'tip' is 'apex'
  • 'midrib' is 'main vein'
  • 'lateral veins' is 'secondary veins'
Revision Questions
  1. List 3 uses of plants. 
  2. What are the two types of leaves?
  3.  Define photosynthesis.
  4. What are the two raw materials or reactants in photosynthesis?
  5. What are the two products of photosynthesis?
  6. What two things MUST be present in order for photosynthesis to occur?
  7. Write the chemical equation for photosynthesis. 
  8. What are storage organs?
  9. Give 3 types of storage organs and one example of each type. 
  10. Differentiate between the two types of reproduction. 
  11. What are the three ways in which plants reproduce asexually?
  12. How is sexual reproduction in plants accomplished? 
  13. What is another term for 'gametes'?
  14. What is another term for 'zygote'?
  15. List the 4 floral organs.
  16. What is another term for 'pistil'?
  17. What is a complete flower?
  18. What is a carpelate flower?
  19. What is a stamenate flower?
  20. Which structure in the male part of the flower is most like the style? Explain your answer. 
  21. Explain the two types of pollination.
  22. State the two methods/agents of pollination and describe the general structure of flowers pollinated using each method.
  23. What two things happen after pollination?
  24. What are 'rewards'?
  25. Why do plants invest in producing rewards?
  26. Define 'germination'.
  27. List the three conditions necessary for germination to occur. 
  28. What is a food chain?
  29. List the three types of consumers.
  30. What does 'trophic' mean?
  31. List all the trophic levels. 
  32. Which type of organisms are classified as decomposers? What is their role in the food chain?
  33. Write a terrestrial and an aquatic food chain that involves 4 organisms, excluding decomposers. 
  34. Why in a food web some organisms can be placed on different trophic levels?
  35. What is the ultimate source of energy?
  36. How do all other organisms depend on plants?
  37. On which consumer level do you recommend being? Explain your answer. 
 13:51:04    2010-10-15 Article # 1
Read the following article and answer the questions that follow. This is due on Thursday 21st October. 
Copy and paste the following web address into a new browser: 
Answer the following questions based on the article you have just read:
  1.  What experiment did Scientist Paul Johnson do?
  2. What was the goal of the experiment?
  3. What is obesity?
  4. What behavior was observed in the rats during the experiment?
  5. Which part of the brain did the researchers study? Explain exactly what it is. 
  6. Which type of drug can cause the brain to secrete pleasurable chemicals?
  7. What were the two different diets fed to rats?
  8. What happened with the rats that were fed junk?
  9. What did Kenny and Johnson want to know? What did they do to find out? 
  10. Explain how the 'reward system' works?
  11. The rats that were fed junk food started to run more and more. What did this suggest?
  12. Kenney said: "This is the hallmark of addition." What did he mean?
  13. What did Kenny and Johnson observe when they took the junk food away from the rats?
  14. Why was this experiment important? 
Hilary Term 
2011-01-05    Project: Soil Types