286853
Which of the following type of cell junction is not found in animal tissues?
1 Adhering junction
2 Tight junction
3 Gap junction
4 Plasmodesmata
Explanation:
(d) Plasmodesmata are narrow channels that act as intercellular cytoplasmic bridges to facilitate communication and transport of materials between plant cells. Adhering, tight and gap junctions are specialized junctions that provide both structural and functional links between the individual cells of animal tissues.
NCERT Page-102
Structural Organization in Animals(NCERT)
286854
Which of the following statement is incorrect regarding cuboidal epithelium?
1 It is an epithelial tissue.
2 It is composed of a single layer of cube-like cells.
3 They are found in the walls of blood vessels and air sacs of lungs.
4 Secretion and absorption are the main functions of these tissue.
Explanation:
(c) They are commonly found in ducts of glands and tubular parts of nephrons in kidneys.
NCERT Page-101
Structural Organization in Animals(NCERT)
286855
Which of the following statement(s) is/are correct regarding compound epithelium?
1 It is made of more than one layer of cells and thus has a limited role in secretion and absorption.
2 Their main function is to provide protection against chemical and mechanical stresses.
3 They cover the dry surface of the skin, moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and pancreatic ducts.
4 All of the above
Explanation:
(d) Compound Epithelium consists of more than one layer of cells. Only the cells of the deepest layer rest on the basement membrane. Being multi-layered, compound epithelia have little role in secretion or absorption, but they provide protection to underlying tissues against mechanical, chemical, thermal or osmotic stresses. Compound epithelia may be stratified or transitional.
NCERT Page-102
Structural Organization in Animals(NCERT)
286856
Ciliated simple columnar epithelium often contains which increase the surface area for secretion and absorption.
1 flagella.
2 collagen fibres
3 microvilli
4 all of these
Explanation:
(c) The columpar epithelium is composed of a single layer of tall and slender cells. Their free surface have microvilli found in the lining of stomach and intestine and help in secretion and absorption.
286853
Which of the following type of cell junction is not found in animal tissues?
1 Adhering junction
2 Tight junction
3 Gap junction
4 Plasmodesmata
Explanation:
(d) Plasmodesmata are narrow channels that act as intercellular cytoplasmic bridges to facilitate communication and transport of materials between plant cells. Adhering, tight and gap junctions are specialized junctions that provide both structural and functional links between the individual cells of animal tissues.
NCERT Page-102
Structural Organization in Animals(NCERT)
286854
Which of the following statement is incorrect regarding cuboidal epithelium?
1 It is an epithelial tissue.
2 It is composed of a single layer of cube-like cells.
3 They are found in the walls of blood vessels and air sacs of lungs.
4 Secretion and absorption are the main functions of these tissue.
Explanation:
(c) They are commonly found in ducts of glands and tubular parts of nephrons in kidneys.
NCERT Page-101
Structural Organization in Animals(NCERT)
286855
Which of the following statement(s) is/are correct regarding compound epithelium?
1 It is made of more than one layer of cells and thus has a limited role in secretion and absorption.
2 Their main function is to provide protection against chemical and mechanical stresses.
3 They cover the dry surface of the skin, moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and pancreatic ducts.
4 All of the above
Explanation:
(d) Compound Epithelium consists of more than one layer of cells. Only the cells of the deepest layer rest on the basement membrane. Being multi-layered, compound epithelia have little role in secretion or absorption, but they provide protection to underlying tissues against mechanical, chemical, thermal or osmotic stresses. Compound epithelia may be stratified or transitional.
NCERT Page-102
Structural Organization in Animals(NCERT)
286856
Ciliated simple columnar epithelium often contains which increase the surface area for secretion and absorption.
1 flagella.
2 collagen fibres
3 microvilli
4 all of these
Explanation:
(c) The columpar epithelium is composed of a single layer of tall and slender cells. Their free surface have microvilli found in the lining of stomach and intestine and help in secretion and absorption.
286853
Which of the following type of cell junction is not found in animal tissues?
1 Adhering junction
2 Tight junction
3 Gap junction
4 Plasmodesmata
Explanation:
(d) Plasmodesmata are narrow channels that act as intercellular cytoplasmic bridges to facilitate communication and transport of materials between plant cells. Adhering, tight and gap junctions are specialized junctions that provide both structural and functional links between the individual cells of animal tissues.
NCERT Page-102
Structural Organization in Animals(NCERT)
286854
Which of the following statement is incorrect regarding cuboidal epithelium?
1 It is an epithelial tissue.
2 It is composed of a single layer of cube-like cells.
3 They are found in the walls of blood vessels and air sacs of lungs.
4 Secretion and absorption are the main functions of these tissue.
Explanation:
(c) They are commonly found in ducts of glands and tubular parts of nephrons in kidneys.
NCERT Page-101
Structural Organization in Animals(NCERT)
286855
Which of the following statement(s) is/are correct regarding compound epithelium?
1 It is made of more than one layer of cells and thus has a limited role in secretion and absorption.
2 Their main function is to provide protection against chemical and mechanical stresses.
3 They cover the dry surface of the skin, moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and pancreatic ducts.
4 All of the above
Explanation:
(d) Compound Epithelium consists of more than one layer of cells. Only the cells of the deepest layer rest on the basement membrane. Being multi-layered, compound epithelia have little role in secretion or absorption, but they provide protection to underlying tissues against mechanical, chemical, thermal or osmotic stresses. Compound epithelia may be stratified or transitional.
NCERT Page-102
Structural Organization in Animals(NCERT)
286856
Ciliated simple columnar epithelium often contains which increase the surface area for secretion and absorption.
1 flagella.
2 collagen fibres
3 microvilli
4 all of these
Explanation:
(c) The columpar epithelium is composed of a single layer of tall and slender cells. Their free surface have microvilli found in the lining of stomach and intestine and help in secretion and absorption.
286853
Which of the following type of cell junction is not found in animal tissues?
1 Adhering junction
2 Tight junction
3 Gap junction
4 Plasmodesmata
Explanation:
(d) Plasmodesmata are narrow channels that act as intercellular cytoplasmic bridges to facilitate communication and transport of materials between plant cells. Adhering, tight and gap junctions are specialized junctions that provide both structural and functional links between the individual cells of animal tissues.
NCERT Page-102
Structural Organization in Animals(NCERT)
286854
Which of the following statement is incorrect regarding cuboidal epithelium?
1 It is an epithelial tissue.
2 It is composed of a single layer of cube-like cells.
3 They are found in the walls of blood vessels and air sacs of lungs.
4 Secretion and absorption are the main functions of these tissue.
Explanation:
(c) They are commonly found in ducts of glands and tubular parts of nephrons in kidneys.
NCERT Page-101
Structural Organization in Animals(NCERT)
286855
Which of the following statement(s) is/are correct regarding compound epithelium?
1 It is made of more than one layer of cells and thus has a limited role in secretion and absorption.
2 Their main function is to provide protection against chemical and mechanical stresses.
3 They cover the dry surface of the skin, moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and pancreatic ducts.
4 All of the above
Explanation:
(d) Compound Epithelium consists of more than one layer of cells. Only the cells of the deepest layer rest on the basement membrane. Being multi-layered, compound epithelia have little role in secretion or absorption, but they provide protection to underlying tissues against mechanical, chemical, thermal or osmotic stresses. Compound epithelia may be stratified or transitional.
NCERT Page-102
Structural Organization in Animals(NCERT)
286856
Ciliated simple columnar epithelium often contains which increase the surface area for secretion and absorption.
1 flagella.
2 collagen fibres
3 microvilli
4 all of these
Explanation:
(c) The columpar epithelium is composed of a single layer of tall and slender cells. Their free surface have microvilli found in the lining of stomach and intestine and help in secretion and absorption.
