Biology
Give biological reasons for the following :
The renal cortex has a dotted appearance.
Excretory System
ICSE 2013
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Answer
As the cortex region contains numerous nephrons or kidney tubules, therefore, it shows a dotted appearance.
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The diagram given below represents the human heart in one phase of its functional activities. Study the same and answer the questions that follow:
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(ii) Label the parts 1, 2, and 3
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(iv) Draw well labelled diagrams of part 1 and 2 to show the structural differences between them.
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