Question

3. Explain the structure and functions of various types of conducting tissue.​

Answer 1

Answer:

Xylem tissue consists of a variety of specialized, water-conducting cells known as tracheal elements. Vessel members are the principal water-conducting cells in angiosperms (though most species also have tracheids) and are characterized by areas that lack both primary and secondary cell walls, known as perforations.

Phloem is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, to parts of the plant where needed. This transport process is called translocation.

Answer 2

There are two conducting tissues: Xylem and phloem

Both xylem and phloem have 4 components

Xylem: Tracheids, Vessels, Xylem fibres and Xylem parenchyma

1)Tracheids are elongated tube-like cells

2) Vessels are long cylindrical structures.

3)Xylem fibres have thickened walls

4)Xylem parenchyma are living and thin walled

Function: conducts water and minerals.

Phloem: Sieve tubes, Companion cells, Phloem fibres and Phloem parenchyma

1)Sieve tubes are long tube-like structures. They lack a nucleus. They are associated with companion cells.

2)Phloem fibres are made of sclerenchymatous cells

3)Phloem parenchyma have dense cytoplasm.

Function: Conducts food