Define compound (complex) tissue.
Answers
Xylem and phloem are the two complex tissues which are discussed hereunder. The complex tissues are heterogeneous in nature, being composed of different types of cell elements. The latter remain contiguous and form a structural part of the plant, adapted to carry on a specialised function.
Answer:
Complex tissue in plants.
TYPES OF XYLEM - DEFINITION
The different components of the xylem include tracheids, vessels, xylem parenchyma and xylem fibres.
Tracheids: Provide support to the plant.
Xylem vessels: Allows transport of water and minerals vertically.
Xylem parenchyma: Stores food and helps in sideways conduction of water and minerals.
Xylem fibres: Supports the plant.
TYPES OF PHLOEM - DEFINITION
The different elements of phloem include sieve tubes, companion cells, and phloem parenchyma and phloem fibres.
Sieve tubes: Transport sugars and nutrients up and down the plants in sieve cells.
Companion cells: Controls the activity of sieve tube.
Phloem parenchyma: Provides mechanical strength to the plant.
Phloem fibres: Stores compound such as starch.
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