VCE Biology Quiz 1

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