Biology
Deepali tried to match the kind of supporting tissues in plants with their characteristic features.
She tabulated the pairs as follows:
| Supporting tissue | Cellular structure |
|---|---|
| P | Dead cells, have thick walls due to deposition of lignin |
| Q | Elongated cells, cell wall is thickened at the corners |
Identify P and Q
- P — Collenchyma, Q — Sclerenchyma
- P — Sclerenchyma, Q — Collenchyma
- P — Parenchyma, Q — Sclerenchyma
- P — Collenchyma, Q — Parenchyma
Tissues
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Answer
P — Sclerenchyma, Q — Collenchyma
Reason — Sclerenchyma is made of dead cells. Cell walls are thickened with lignin, making them rigid and supportive. Collenchyma is made of living cells and are elongated. Cell walls are unevenly thickened at the corners, providing flexible support.
Parenchyma cells are living and has thin, uniform cell walls.
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