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RRB Group-D Model Paper 12 with answers for online practice
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© examsnet.com
Question : 70
Total: 100
Which of the following tissue provide fortification to the plant ?
Meristematic tissue
Simple Permanent Tissue
Complex Permanent Tissue
Protective tissues
Validate
Solution:
Protective tissues provide fortification to the plant.
Protective tissues:
These tissues provide fortification to the plant.
They include two basic things which are known as the 'epidermis & cork'.
The following table shows the components of protective tissues with respective features.
Components of Protective tissues
Features
Epidermis
Its a layer of cell that makes up the outer casing in the plant.
At certain places, the stomata perforate the epidermis.
The stomata help in loss of gaseous exchange & water
Cork
It is the external protective tissue that substitutes the epidermal cells in mature roots & stems.
Cork cells lack intercellular gaps & lifeless.
The cell walls of corks are coagulated by suberin which makes them impervious to water mole
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