Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant...
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Transcript of Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant...
![Page 1: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/1.jpg)
Plant Tissues
![Page 2: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/2.jpg)
Tissues are groups of cells with similar structure, origin and function.
Plant tissues can be divided into two types: meristematic
(perpetually young tissues important in growth) permanent
Simple tissue is composed of one kind of cell.
Complex tissue is composed of two or more kinds of cells.
![Page 3: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/3.jpg)
Meristematic Tissues
are groups of cells that have the ability to divide.
Characteristic:
the cells are small
the cell walls are thin
cells have large nuclei
vacuoles are absent or very small
no intercellular spaces
Locations:
tips of roots, stems, buds
![Page 4: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/4.jpg)
are derived from meristematic tissues.
They have lost the power of dividing.
Simple permanent tissues:
Parenchyma
Collenchyma
Sclerenchyma
Examples of complex permanent tissues:
Xylem (commonly called wood)
Phloem (commonly called bast)
Epidermis
Permanent Tissues
![Page 5: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/5.jpg)
Characteristic:
cells remain alive at maturity
thin-walled cells
isodiametric shape
intercellular spaces
widespread occurrence in the plant body
(leaves, root, stem)
Parenchyma tissue
![Page 6: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/6.jpg)
Parenchyma tissue under a microscop
i - intercellular space
bs – cell walls
![Page 7: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/7.jpg)
In the different regions of the plant body parenchyma cells are involved in different functions.
For example: Aerenchyma
The cells enclose large
intercellular spaces that are
filled with air. Aerenchyma
helps to transport oxygen
produced during photosynthesis.
It is characteristically found in aquatic floating plants.
Types of Parenchyma
![Page 8: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/8.jpg)
Characteristic:
cells remain alive at maturity
cell walls are thickened
intercellular spaces absent or very small
occurence in the peripheral regions of stems and leaves
Collenchyma Tissue
![Page 9: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/9.jpg)
Collenchyma TissueStalk of begonia under a microscop
par – parenchyma
kol – collenchyma
e – epidermis (covers the plant)
bs – cell walls
![Page 10: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/10.jpg)
Characteristic:
Mature sclerenchyma cells are dead
Cells have thick secondary walls
Occurence in shells and the outer hard coat of many seeds
Sclerenchyma Tissue
![Page 11: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/11.jpg)
The shell of walnut as an example of sclerenchyma tissues
![Page 12: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/12.jpg)
Questions for you
Which are the growth tissues of plants?
The growth tissues of the plants are the meristems.
![Page 13: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/13.jpg)
Which are the plant tissues responsible for supporting of the plant??
The plant supporting tissues are the collenchyma and the sclerenchyma.
![Page 14: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/14.jpg)
Which is the plant tissue responsible for filling of the space between other tissues?
The plant-filling tissue is generically called parenchyma.
![Page 15: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/15.jpg)
Which tissue does the husk of a coconut contain??
SclerenchymaSclerenchymatous cells are dead cells. The
fibrous husk of coconut is also dead.
![Page 16: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/16.jpg)
Resources
Internet:◦ http://botanika.wendys.cz/slovnik/foto.php?80_1◦ http://botanika.wendys.cz/slovnik/foto.php?81_1◦ http://www.odmaturuj.cz/biologie/rostlinna-pletiva/◦ http://botanika.borec.cz/o_pletiva.php#deliva◦ http://www.biologie.webz.cz/www/botanika/anatomie.html
Literature:
◦Kincl:Botanika
![Page 17: Plant Tissues. Tissues are groups of cells with similar structure, origin and function. Plant tissues can be divided into two types: meristematic (perpetually.](https://reader030.fdocuments.in/reader030/viewer/2022032605/56649e7c5503460f94b7e1f9/html5/thumbnails/17.jpg)
Created by
Denisa Romanovska