333892
Assertion : In Zea mays root, xylem is exarch Reason : The protoxylem lies towards periphery and metaxylem towards the centre.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are true and Reason is correct explanation of Assertion. In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called exarch.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333893
The cell wall is composed of ____A____ and has pits through which____B____connections exist between the cells.
The cell wall is composed of cellulose and has pits through which plasmodesmatal connections exist between the cells.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333894
Tracheids are elongated or tube like cells, having cell wall which is ____
1 Thick and lignified
2 Thin and lignified
3 Thick and chitinified
4 Thin and chitinified
Explanation:
Thick and lignified cell walls are shown by tracheids, this are without protoplasm and are dead.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333895
____ lack vessels in their xylem.
1 Angiosperms
2 Algae
3 Gymnosperms
4 Bryophytes
Explanation:
Gymnospems lack vessels in their xylem, Vessel is a long cylindrical tube-like structure made up of many cells called vessel members, each with lignified walls and a large central cavity. The presence of vessels is a characteristic feature of angiosperms.
333892
Assertion : In Zea mays root, xylem is exarch Reason : The protoxylem lies towards periphery and metaxylem towards the centre.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are true and Reason is correct explanation of Assertion. In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called exarch.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333893
The cell wall is composed of ____A____ and has pits through which____B____connections exist between the cells.
The cell wall is composed of cellulose and has pits through which plasmodesmatal connections exist between the cells.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333894
Tracheids are elongated or tube like cells, having cell wall which is ____
1 Thick and lignified
2 Thin and lignified
3 Thick and chitinified
4 Thin and chitinified
Explanation:
Thick and lignified cell walls are shown by tracheids, this are without protoplasm and are dead.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333895
____ lack vessels in their xylem.
1 Angiosperms
2 Algae
3 Gymnosperms
4 Bryophytes
Explanation:
Gymnospems lack vessels in their xylem, Vessel is a long cylindrical tube-like structure made up of many cells called vessel members, each with lignified walls and a large central cavity. The presence of vessels is a characteristic feature of angiosperms.
333892
Assertion : In Zea mays root, xylem is exarch Reason : The protoxylem lies towards periphery and metaxylem towards the centre.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are true and Reason is correct explanation of Assertion. In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called exarch.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333893
The cell wall is composed of ____A____ and has pits through which____B____connections exist between the cells.
The cell wall is composed of cellulose and has pits through which plasmodesmatal connections exist between the cells.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333894
Tracheids are elongated or tube like cells, having cell wall which is ____
1 Thick and lignified
2 Thin and lignified
3 Thick and chitinified
4 Thin and chitinified
Explanation:
Thick and lignified cell walls are shown by tracheids, this are without protoplasm and are dead.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333895
____ lack vessels in their xylem.
1 Angiosperms
2 Algae
3 Gymnosperms
4 Bryophytes
Explanation:
Gymnospems lack vessels in their xylem, Vessel is a long cylindrical tube-like structure made up of many cells called vessel members, each with lignified walls and a large central cavity. The presence of vessels is a characteristic feature of angiosperms.
333892
Assertion : In Zea mays root, xylem is exarch Reason : The protoxylem lies towards periphery and metaxylem towards the centre.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are true and Reason is correct explanation of Assertion. In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called exarch.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333893
The cell wall is composed of ____A____ and has pits through which____B____connections exist between the cells.
The cell wall is composed of cellulose and has pits through which plasmodesmatal connections exist between the cells.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333894
Tracheids are elongated or tube like cells, having cell wall which is ____
1 Thick and lignified
2 Thin and lignified
3 Thick and chitinified
4 Thin and chitinified
Explanation:
Thick and lignified cell walls are shown by tracheids, this are without protoplasm and are dead.
BIOXI06: ANATOMY OF FLOWERING PLANTS
333895
____ lack vessels in their xylem.
1 Angiosperms
2 Algae
3 Gymnosperms
4 Bryophytes
Explanation:
Gymnospems lack vessels in their xylem, Vessel is a long cylindrical tube-like structure made up of many cells called vessel members, each with lignified walls and a large central cavity. The presence of vessels is a characteristic feature of angiosperms.