This document summarizes different types of plant tissue. It describes simple tissues like parenchyma, collenchyma, and sclerenchyma. It also describes complex tissues like xylem and phloem. Xylem is responsible for water conduction and consists of vessels, tracheids, fibers and parenchyma. Phloem transports food and consists of sieve tubes, companion cells, fibers and parenchyma. The document outlines the key functions of xylem, which is to conduct water and minerals, and phloem, which facilitates two-way translocation of food in plants.

1. PLANT TISSUE

2. Simple tissue
 Parenchyma- thin walled and alive at
maturity ,often multifaceted
 Collenchyma - thick walled and alive at
maturity
 Sclerenchyma- thick walled and dead at
maturity
 Sclerid-cell as long as they are wide
 Fibers- cell longer than they are wide

3. Parenchyma

4. Collenchyma

5. sclerechyma
Sclerid fiber

6. Complex tissue
 Xylem – water conducting tissue;
parenchyma, fibers, vessels and/or
tracheids, and ray cells.
 Phloem - food conducting tissue; sieve-
tube members (no nucleus at maturity,
cytoplasm present), companion cells,
fibers, parenchyma, and ray cells. In
flowering plants, sieve-tube members and
companion cells arise from the same
mother cell.
.

7. xylem

8. Function
 The cells of xylem are dead, except the cell of
xylem parenchyma
 Trachieds and vessels are tubular structures and
thus they provide a channel for conduction of
water and mineral
 Xylem fibre provide structural support to the
tissue . Xylem parenchyma stores food

9. Phloem

10. Function
 Sieve tubes are tubular cell with
perforated walls
 Sieve tubes are the conducting
elements of phloem
 Phloem is responsible for translocation
of food in plants
 The transport of food in phloem is a two
way movement

11. Vascular Bundles with xylem & phloem
Maize or Corn – vein
in cross section
Alfalfa – vein in cross sect