Question

Define complex permanent tissue

Answer 1

These tissues are characterised by the presence of dissimilar cells. Hence, they are described as heterogenous in their cellular composition.

The complex permanent tissues are also known as vascular tissues or conducting tissues, since they are involved in the movement of various chemical substances in the plant body. This movement is known as translocation. It is of two types 

Answer 2

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✔✔Tissues composed of more than one type of cells are called complex permanent tissues. There are two types of complex permanent tissues:-

⭕Xylem - Xylem is a vascular and mechanical tissue. it is composed of four different types of cells:- Tracheids, Vessels, Xylem parenchyma, Xylem sclerenchyma.
The cells have thick walls and many of them are dead cells. Tracheids and vessels are tubular structure. This allows them to transport water and Minerals vertically. The parenchyma stores food and helps in sideways conduction of water.

⭕Phloem - Phloem is made up of four types of elements:- Sieve tubes, Companion cells, Phloem Parenchyma and Phloem fibres. Except from phloem fibres phloem cells are living cells. Sieve tubes are tubular cells with perforated by numerous pores and are called sieve plates. Phloem transports food leaves to other plants of the plant.