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Q: Which of the following is found only in plant cells?
  • A. Cell wall
  • B. Nucleus
  • C. Mitochondria
  • D. Cell membrane
Correct Answer: Option A - The outermost covering of plant cells is called cell wall. Plant cell wall is a complex structure that serves multiple functions essential for the growth and protection of plant cells. It is composed of cellulose, hemicellulose, pectin, lignin, and proteins. The cell wall maintains the shape of the cell and provides structural support. It is absent in animal cells and found only in plant cells .
A. The outermost covering of plant cells is called cell wall. Plant cell wall is a complex structure that serves multiple functions essential for the growth and protection of plant cells. It is composed of cellulose, hemicellulose, pectin, lignin, and proteins. The cell wall maintains the shape of the cell and provides structural support. It is absent in animal cells and found only in plant cells .

Explanations:

The outermost covering of plant cells is called cell wall. Plant cell wall is a complex structure that serves multiple functions essential for the growth and protection of plant cells. It is composed of cellulose, hemicellulose, pectin, lignin, and proteins. The cell wall maintains the shape of the cell and provides structural support. It is absent in animal cells and found only in plant cells .