Class VII : Biology : Plant and Animal Tissues

Spellings to Remember 

1. organism
2. microscopic
3. unicellular organisms
4. multicellular organisms
5. protoplasm
6. organelles
7. tissues
8. organs
9. organ systems
10. fertilised egg = zygote
11. contractile
12. meristematic tissues
13. permanent tissues
14. Petri dish
15. sprouts
16. nuclei
17. conspicuous
18. vacuoles
19. differentiated
20. Epidermis
21. waxy
22. parenchyma
23. collenchyma
24. sclerenchyma
25. intercellular spaces
26. chlorophyll
27. elongated
28. longitudinal section
29. cross section
30. spherical
31. photosynthesis
32. respiration
33. buoyancy
34. aquatic
35. petioles
36. vascular tissue
37. xylem
38. phloem
39. tracheids
40. vessels
41. xylem parenchyma
42. xylem fibres
43. minerals
44. transpiration
45. tubular
46. sieve tubes
47. phloem parenchyma
48. phloem fibres
49. conduction
50. unidirectional
51. bidirectional
52. cambium
53. Epithelial (covering) tissue
54. Connective (supportive ) tissue
55. Muscular (contractile) tissue
56. Nervous (message conveying) tissue
57. flat
58. cuboidal
59. columnar
60. Squamous epithelium
61. Cuboidal Epithelium
62. Columnar epithelium
63. Ciliate epithelium
64. absorption
65. stomach
66. intestine
67. secretory
68. oviduct
69. cilia
70. lashing
71. cartilage
72. clear ground substance (matrix)
73. vertebrates
74. phosphorous salt
75. areolar
76. adipose
77. tendons
78. ligaments
79. blood
80. lymph
81. plasma
82. red blood corpuscles
83. white blood corpuscles
84. platelets
85. leukocytes
86. blood capillaries
87. glucose
88. amino acids
89. oxygen
90. connective tissue
91. supportive connective tissue
92. fibrous connective tissue
93. fluid connective tissue
94. muscular tissue
95. locomotion
96. striated
97. skeletal
98. striped
99. voluntary
100. unstriated
101. smooth
102. unstriped involuntary
103. cardiac
104. alimentary canal
105. contraction
106. iris
107. urinary bladder
108. stimulation
109. nervous tissue
110. neurons
111. nerve cell
112. cyton
113. nucleus
114. dendrites
115. dendrons
116. axon

Class VII : Physics: Physical Quantities and Measurements

Class VII : Physics: Physical Quantities and Measurements

Volume

Definition: The space occupied by an object is called its volume.

Units and their relations :

S.I Unit of Volume: m³

1 m³   =  10⁶ cm³

1 L = 1,000 cm³ = 1,000mL

1mL = 1cm³ = 10^-6 m³

Measurement of Volume of regular objects : Formulae

1. Volume of a cube = (one side) ³
2. Volume of a cuboid = length x breadth x height
3. Volume of a sphere = (4π /3 ) x (radius) ³
4. Volume of  cylinder = π  x  (radius)²  x height
5. Volume of cone = ( π / 3 ) x  (radius)² x height 

Area 

Definition: The surface occupied by an object is called its area. 

Units and their relations :

S. I unit of Area: m²

1 are = 1 square decametre = 10² m²

1 hectare = 10⁴ m²

1 km² = 10⁶ m²

1 cm² = 10^-4 m²

1mm² = 10^-6 m²

Measurement of Area of regular objects: Formulae

1. Area of a squre = (one side) ²
2. Area of a rectangle = length x breadth
3. Area of a circle= π x (radius)² 
4. Surface Area of a cylinder = 2π  x  radius  x length
5. Surface Area of sphere =  4π  x  (radius)²

Density

Definition: The density of a  substance is defined as the mass of a unit volume of that substance.

Density = Mass / Volume

d = M / V

Units and their relations :

S.I Unit of Density = Kg/ m³

C.G.S unit o Density = g/ cm³

1 g/ cm³ = 1000  Kg/ m³

Speed

Definition:  The distance covered by a body in unit time is called the speed of the body.

Speed = Distance traveled / Time taken

Speed (v) = d / t

Units and their relations :

S. I. Unit of time = m/s

1 km/hour = 1/3.6 m/s

3.6 km/h = 1 m/s