AAO SIKHTE HAI

 

🧬 LIFE PROCESSES (15 Questions)

1. Define life processes.
2. Why is diffusion insufficient in multicellular organisms?
3. Name the enzyme present in saliva.
4. What is the role of HCl in the stomach?
5. Define peristalsis.
6. What are villi? Write their function.
7. Define respiration.
8. Differentiate between aerobic and anaerobic respiration.
9. Write the equation of photosynthesis.
10. What is translocation?
11. What are stomata?
12. What is double circulation?
13. Name the blood vessel that carries oxygenated blood from lungs to heart.
14. What is transpiration?
15. Name two excretory products in plants.

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🧠 CONTROL AND COORDINATION (10 Questions)

16. Define reflex action.
17. Draw a reflex arc diagram.
18. Name the plant hormone responsible for growth.
19. What is the function of adrenaline?
20. What is phototropism?
21. Differentiate between nervous and hormonal control.
22. Name two endocrine glands.
23. What is the role of thyroid hormone?
24. Define geotropism.
25. What happens when insulin is not produced?

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👨‍👩‍👧 HOW DO ORGANISMS REPRODUCE (12 Questions)

26. Define reproduction.
27. What is binary fission?
28. Define multiple fission.
29. What is regeneration?
30. Define vegetative propagation.
31. What is pollination?
32. Differentiate between self and cross pollination.
33. What is fertilization?
34. Name male and female gametes in humans.
35. What is menstrual cycle?
36. Define puberty.
37. Why is DNA copying important?

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👶 HEREDITY AND EVOLUTION (15 Questions)

38. Define heredity.
39. Who gave the laws of inheritance?
40. State Mendel’s law of dominance.
41. Define genotype and phenotype.
42. What is a monohybrid cross?
43. Write phenotypic ratio of monohybrid cross.
44. Define acquired traits.
45. What is the meaning of Recessive ?
46. What is the meaning of dominant?
47. Define the term variation with example.
48. What is the meaning of homozygous.
49. Explain monohybrid cross ?
50. Explain Dihybrid cross..
51. What is sex determination in humans?
52. Which chromosome determines male child?

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🌍 OUR ENVIRONMENT (10 Questions)

53. Define ecosystem.
54. What are producers?
55. Define food chain.
56. What is 10% law?
57. Define trophic level.
58. What are decomposers?
59. What is biological magnification?
60. Define ozone layer.
61. What causes ozone depletion?
62. What is the role of bacteria in ecosystem?
63. What is the role of decomposers in the ecosystem?
64. What are trophic level?
65. Why are some substances biodegradable and some non biodegradable?
66. Give any two ways in which biodegradable substances would affect the environment.
67. Give any two ways in which non - biodegradable substances would affect the environment.
68. What is ozone and how does it affect any ecosystem?
69. How can you help in reducing the problem of waste disposal? Give any two methods.
70. What will happen if we kill all the organisms in one trophic level?

👁️ THE HUMAN EYE AND COLOURFUL WORLD (8 Questions)

71. Define power of accommodation.
72. What is myopia?
73. How is myopia corrected?
74. What is hypermetropia?
75. Define dispersion of light.
76. Why is sky blue?
77. What is scattering?
78. Why sun appears red at sunset?

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⚡ ELECTRICITY (6 Questions – Important Diagrams/Numericals)

79. Define electric current.
80. State Ohm’s Law.
81. Write formula of resistance.
82. Define electric power.
83. Write unit of electric energy.
84. Calculate resistance if V=10V, I=2A.

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🧲 MAGNETIC EFFECT OF ELECTRIC CURRENT (6 Questions)

85. State Right Hand Thumb Rule.
86. What is electromagnet?
87. Name device used to detect electric current.
88. Define electromagnetic induction.
89. What is electric motor?
90. State Fleming’s Left Hand Rule.
91. Draw magnetic field lines around a bar magnet.
92. List the properties of magnetic field lines intersect each other?

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🧪 ACIDS, BASES AND SALTS (5 Questions)

96. Define pH.
97. What is neutralization?
98. Name gas evolved when acid reacts with metal.
99. What is baking soda?
100. What is washing soda?

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