Biology Class 9th
161. Our Eyes can differentiate between two points at least ______ apart.
A) 0.2 mm
B) 0.002 mm
C) 0.1mm
D) none of the above
162. Resolution of Microscope is ________ than eye.
A) Equal
B) Lesser
C)Greater
163. Light Microscope uses ________ to make image of object.
A) Electricity
B) Light
C) Thermal Energy
D) Radiation.
164. There are basic _______ types of microscope.
A) One
B) Two
C) Three
D) Five
165. The Magnification of light microscope is _________.
A) 1500x
B) 1200x
C)2000x
D)1000x
166. ____________ has resolving power of 0.2 micrometer.
A) Electron
B) Compound
C) Light
D) none of the above.
167. In electron microscope a beam of ________ is used.
A) Light
B) Protons
C) Neutrons
D) Electrons
168. ____________ Lens focus electron beam on screen.
A) Polarized
B) Convex
C) Magnetic
D) Concave
169. Resolving power of Electron Microscope is ________ than Light microscope.
A) Equal
B) Lesser
C) Greater
170. Electron Microscope can distinguish between two objects ________ apart.
A)Â 0.2 nm
B) 0.2mm
C)0.2micrometer
D) 0.2cm
171. There are _________ types of electron microscopes.
A) One
B) Two
C) Three
D) Four
172. Transmission Electron Microscope is used to view ________ cell structure.
A) Internal
B) External
C) Both A and B
D) None
173. TEM can magnify objects upto:
A) 250000 times
B) 200000 times
C) 220000 times
D) None.
174. SEM is used to study:
A) Detailed surfaces of cells
B) Internal structure of Bodies
C) A and B
D) None
175. Resolution of Light Microscope is ________ times greater than Eye.
A) 100
B) 150
C) 200
D) 500
176. Magnification of Electron Microscope is _______ times greater than Light Microscope.
A) 50
B) 60
C) 75
D) 100.
177. SEM shows _________ images.
A) Real
B) Inverted
C) 2D
D) 3D
178. Robert Hooke was a __________ scientist.
A) French
B) English
C) Polish
D) Dutch
179. Robert Hooke used his microscope to study:
A) Animal Cells
B) Plant Cells
C) Bone Cells
D) Cork Cells.
180. Anton van Leewenhoek magnified pond water ______ times.
A) 100
B) 150
C) 200
D) 300