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Life Processes — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceLife Processes1 Mark
MCQ
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : Trachea does not collapse, when there is no air in it.
Reason : Trachea is supported by cartilage.
  • ✓
    Both $A$ and $R$ are true and $R$ is correct explanation of the assertion.
  • B
    Both $A$ and $R$ are true but $R$ is not the correct explanation of the assertion.
  • C
    $A$ is true but $R$ is false.
  • D
    $A$ is false but $R$ is true.
✓

Answer

Correct option: A.
Both $A$ and $R$ are true and $R$ is correct explanation of the assertion.
Trachea is a tube which is conunonly known as windpipe. The air coming from the nostrils during breathing passes through trachea. Trachea is supported by rings of soft bones called cartilage. Due to this, trachea does not collapse even when there is no air in it.

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