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In Fern stem xylem is -
- a)Exarch
- b)Mesarch
- c)Endarch
- d)Polyarch
Correct answer is option 'B'. Can you explain this answer?
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In Fern stem xylem is -a)Exarchb)Mesarchc)Endarchd)PolyarchCorrect ans...
The roots of vascular plants are normally considered to have exarch development. Endarch is used when there is more than one strand of primary xylem in a stem or root, and the xylem develops from the inside outwards towards the periphery, i.e. centrifugally. ... The leaves and stems of many ferns have mesarch development.
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In Fern stem xylem is -a)Exarchb)Mesarchc)Endarchd)PolyarchCorrect ans...
Explanation:
In fern stems, xylem is arranged in a specific pattern known as the protostele. The arrangement of xylem in the protostele can vary, and it is classified into different types based on the position of the protoxylem.
Mesarch Xylem:
Mesarch xylem refers to the arrangement of xylem where the protoxylem elements are located towards the center of the stem, while the metaxylem elements are towards the periphery. This type of arrangement is commonly found in the stems of ferns.
Comparison with Other Types:
- Exarch Xylem: In exarch xylem, the protoxylem elements are located towards the periphery of the stem, while the metaxylem elements are towards the center. This arrangement is commonly found in gymnosperms and some dicotyledonous plants.
- Endarch Xylem: In endarch xylem, the protoxylem elements are located towards the center of the stem, while the metaxylem elements are towards the periphery. This arrangement is commonly found in the roots of most dicotyledonous plants.
- Polyarch Xylem: Polyarch xylem refers to the arrangement of xylem where there are multiple strands of xylem scattered throughout the stem. This arrangement is commonly found in the stems of monocotyledonous plants.
Summary:
Based on the given options, the correct answer is option B - Mesarch. In fern stems, xylem is arranged in a mesarch pattern, where the protoxylem elements are located towards the center of the stem, while the metaxylem elements are towards the periphery.
In fern stems, xylem is arranged in a specific pattern known as the protostele. The arrangement of xylem in the protostele can vary, and it is classified into different types based on the position of the protoxylem.
Mesarch Xylem:
Mesarch xylem refers to the arrangement of xylem where the protoxylem elements are located towards the center of the stem, while the metaxylem elements are towards the periphery. This type of arrangement is commonly found in the stems of ferns.
Comparison with Other Types:
- Exarch Xylem: In exarch xylem, the protoxylem elements are located towards the periphery of the stem, while the metaxylem elements are towards the center. This arrangement is commonly found in gymnosperms and some dicotyledonous plants.
- Endarch Xylem: In endarch xylem, the protoxylem elements are located towards the center of the stem, while the metaxylem elements are towards the periphery. This arrangement is commonly found in the roots of most dicotyledonous plants.
- Polyarch Xylem: Polyarch xylem refers to the arrangement of xylem where there are multiple strands of xylem scattered throughout the stem. This arrangement is commonly found in the stems of monocotyledonous plants.
Summary:
Based on the given options, the correct answer is option B - Mesarch. In fern stems, xylem is arranged in a mesarch pattern, where the protoxylem elements are located towards the center of the stem, while the metaxylem elements are towards the periphery.
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In Fern stem xylem is -a)Exarchb)Mesarchc)Endarchd)PolyarchCorrect answer is option 'B'. Can you explain this answer?
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In Fern stem xylem is -a)Exarchb)Mesarchc)Endarchd)PolyarchCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In Fern stem xylem is -a)Exarchb)Mesarchc)Endarchd)PolyarchCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In Fern stem xylem is -a)Exarchb)Mesarchc)Endarchd)PolyarchCorrect answer is option 'B'. Can you explain this answer?.
In Fern stem xylem is -a)Exarchb)Mesarchc)Endarchd)PolyarchCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about In Fern stem xylem is -a)Exarchb)Mesarchc)Endarchd)PolyarchCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In Fern stem xylem is -a)Exarchb)Mesarchc)Endarchd)PolyarchCorrect answer is option 'B'. Can you explain this answer?.
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