Which of the following is a type of complex permanent tissue?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Phloem
Permanent tissues of a plant are of two kinds. A simple permanent tissue is made of one type of cell; a complex permanent tissue is made of more than one type of cell working together. The two complex tissues are xylem and phloem.
Phloem is made of sieve tubes, companion cells, phloem parenchyma and phloem fibres, and carries food from the leaves to the other parts of the plant.
Why the other options are incorrect
Option (1) Parenchyma — Incorrect. A simple tissue of thin-walled living cells that store food.
Option (2) Collenchyma — Incorrect. A simple tissue of cells thickened at the corners, giving flexibility to stems and leaf stalks.
Option (3) Sclerenchyma — Incorrect. A simple tissue of dead cells with thick lignified walls, as in the husk of a coconut.