vce biology quiz 1

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  1. 1. VCE BIOLOGY QUIZ 1 www.drlakshmisharma.com Dr Lakshmi Sharma NO LIMITS TO LEARNING! BELIEVE & YOU CAN ACHIEVE! Plants response to Environment & Regulatory mechanisms Animals
  2. 2. Face Off
  3. 3. Are you ready?
  4. 4. Question 1 What is Photoperiodism?
  5. 5. Photoperiodism is the plants response to the length of light and dark periods
  6. 6. Question 2 What is Thigmotropism?
  7. 7. The plants response to touch
  8. 8. Question 3 What are the 2 types of hormones in the body?
  9. 9. 1. Synthesised from fatty acids Small & lipid-soluble, easily pass through membranes nucleus-act on genes Steroid hormones testosterone & oestrogen 2. Synthesised from amino acids Water soluble, cannot pass through membranes bind to receptors plasma membrane, responses in cell. Adrenaline & growth hormones
  10. 10. Question 4 Explain short day plants?
  11. 11. Short Day Plants require long nights to trigger flowering. Late summer, autumn or winter
  12. 12. Question 5 What is the main difference between the nervous & endocrine system?
  13. 13. Endocrine system is slower E.S hormones & glands N.S neurons
  14. 14. Question 6 What is vernalisation?
  15. 15. Vernalisation:period of winter cold that stimulates flowering
  16. 16. Question 7 What is A ? A
  17. 17. A
  18. 18. Question 8 Where is Ethylene produced?
  19. 19. Ripening fruits;flowers, seeds, leaves & roots.
  20. 20. Question 9 Explain/examples ve & +ve geotropism?
  21. 21. Roots +ve & leaves ve geotropism
  22. 22. Question 10 What is the action potential in neurons?
  23. 23. Nerve impulse or action potential is a wave of electrical change along the axon membrane stimulation involving the exchange of sodium and potassium ions. At the dendrite it stimulates the release of a chemical transmitter, which diffuses across a synapse.
  24. 24. Question 10 What are the 2 components of the central nervous system?
  25. 25. The brain & the spinal cord
  26. 26. Question 11 What happens to the cells in a plant shoot when Auxins are released?
  27. 27. Elongate this causes the tip to bend towards the light
  28. 28. Question 12 Give 1 example of how plants differ from animal hormones?
  29. 29. Plants have; 1. Fewer Hormones 2. Relatively simple hormones 3. Hormone (not in glands) produced by cells receiving the stimulus
  30. 30. Question 13 Name 4 types of receptors in humans?
  31. 31. Photoreceptors Visible light, infrared radiation Chemoreceptors Taste, smell, communication Oxygen, CO2, pH, water, salts etc Mechanoreceptors Hearing, balance, pressure, touch Thermoreceptors Heat and cold
  32. 32. Question 14 How do plants survive the harsh winters and drought?
  33. 33. Plants survive harsh winters and droughts by: Seed dormancy Bud dormancy Vernalisation
  34. 34. Question 15 Which hormone is responsible for fruit ripening?
  35. 35. Ethylene
  36. 36. Question 16 Give an example of a reflex action?
  37. 37. Knee jerk, hand on hot plate etc
  38. 38. Question 17 Abscisic Acid controls stomata movement why do these close in drought conditions?
  39. 39. To prevent water lose from plant (prevent dehydration)
  40. 40. Question 18 This is an example of what?
  41. 41. +ve Geotropism
  42. 42. Question 19 Which hormone promotes growth of the entire plant?
  43. 43. Gibberellins
  44. 44. Question 20 Name the 2 types of nervous systems?
  45. 45. Central Nervous System Peripheral Nervous System
  46. 46. Question 21 What is A state its function? A
  47. 47. How do plants respond to the environment Question 22
  48. 48. The environmental stimulus causes a sensitive cell to produce a particular hormone
  49. 49. Question 23 How would you define this ?
  50. 50. Withdrawal Reflex
  51. 51. Question 24 Which hormone is at play in the photo?
  52. 52. Abscisic Acid ABA
  53. 53. END OF QUIZ Score Please !!!