This document discusses the different types of plant tissues. It begins by defining tissue and explaining that plants are made up of two main types of tissues: meristematic tissues and permanent tissues. Meristematic tissues are specialized regions of active cell division, including apical and intercalary meristems. Permanent tissues provide structure and carry out various functions; they include parenchyma, collenchyma, sclerenchyma, xylem, and phloem. Each type of permanent tissue is then described in terms of its cellular structure and function within the plant.

1. WELCOME
SHIBI BABU
NATURAL SCIENCE
18114361013

2. PLANT TISSUES
• Tissue is a group of cells having a common
origin and usually performing a common
function A plant is made up of different
kinds of tissues Tissues are classified into
two main groups
• 1.Meristematic tissues
• 2.permanent tissues

3. MERISTEMATIC TISSUES
• Growth in plants is largely restricted to
specialised regions of active cell division called
meristems
• 1.Apical meristems
• 2.Intercalery meristem

4. PERMANENT TISSUES
• 1.parenchyma
• 2.collenchyma
• 3.sclerenchyma
• 4.xylem
• 5.phloem

5. PARENCHYMA
• Tissue formed of same kind of cells with thin cell
walls.
• It seen in soft parts of plants.
• Chloroplasts can be seen in some parenchyma cells.
• In certain parenchyma cells,air filled spacescan be
seen between the cells.
• It performs functions such as photosynthesis,food
storage etc...

6. COLLENCHYMA
• Tissues formed of similar cells with thickened cell
walls only at the corners.
• The corners of the cell walls become thickened due
to the deposition of substances like suberin, pectin,
cellulose etc.
• These provide support to the plant parts.

7. SCLERENCHYMA
• This tissue formed of thick walled cells.
• Thickness is due to the deposition of a substance
called lignin.
• Hard plant parts are made up of sclerenchyma
cells.
• It provides support and strength to the plant parts.

8. XYLEM
• Tissues which is formed of elongated cells.
• These cells unite together and are seen as pipes.
• Water and minerals absorbed by the roots
reaches the leaves through these pipes.
• The deposition of lignin,the cells of the tissue get
hardened.
•

9. PHLOEM
• Tissue formed of elongated cells.
• They too are formed as pipes like the xylem
tissues.
• The food prepared in the leaves reaches the
different parts of the plant including the root
through these pipes.

10. THANKS