6.Observe the given diagram and answer the following.
a. Identify the device.
b. Label A and B.
c. Give one use of device.
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Correct option is
B
A - (v,) B - (iv), C - (viii), D - (iii)
In the given diagram A represents the structure of rough endoplasmic reticulum (RER). It is associated with small dense granules called ribosomes, along the outer border of its membrane.
ER is sometimes not associated with ribosome (represented by B) hence called as smooth endoplasmic reticulum.
C represents the structure of nucleus surrounded by a nuclear envelope. Cytoplasm is the jelly-like fluid protoplasmic fluid which surrounds the nucleus, represented by structure D.
Thus, option B is the correct answer.
In electricity generation, a generator is a device that converts motive power into electrical power for use in an external circuit. Sources of mechanical energy include steam turbines, gas turbines, water turbines, internal combustion engines, wind turbines and even hand cranks.