State whether the following statement is true or false:
All epithelium is usually not separated from the underlying tissue by an extracellular fibrous basement membrane.
All epithelium is usually not separated from the underlying tissue by an extracellular fibrous basement membrane.
(FALSE) The statement is False.
In biological tissues,all epithelial cells are characteristically separated from the underlying connective tissue by a thin,non-cellular,extracellular fibrous structure known as the basement membrane. This membrane provides structural support and acts as a selective filter for substances moving between the epithelium and the underlying tissue.
In biological tissues,all epithelial cells are characteristically separated from the underlying connective tissue by a thin,non-cellular,extracellular fibrous structure known as the basement membrane. This membrane provides structural support and acts as a selective filter for substances moving between the epithelium and the underlying tissue.
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Sclerenchyma is a tissue that makes the plant soft and flexible.
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View SolutionGive reasons for:
$(a)$ Meristematic cells have a prominent nucleus and dense cytoplasm but they lack vacuoles.
$(b)$ Intercellular spaces are absent in sclerenchymatous tissues.
$(c)$ We get a crunchy and granular feeling when we chew pear fruit.
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$(a)$ Meristematic cells have a prominent nucleus and dense cytoplasm but they lack vacuoles.
$(b)$ Intercellular spaces are absent in sclerenchymatous tissues.
$(c)$ We get a crunchy and granular feeling when we chew pear fruit.
$(d)$ Branches of a tree move and bend freely in high wind velocity.
$(e)$ It is difficult to pull out the husk of a coconut.
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