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Which of the following statements is correct about a woody dicot stem which shows extensive secondary growth?
- a)Primary xylem persists in the centre of the axis.
- b)Primary and the older secondary phloem get crushed.
- c)Secondary xylem forms the bulk of the stem
- d)all of these
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Which of the following statements is correct about a woody dicot stem ...
The primary xylem persists in the center of the axis, secondary xylem forms the bulk of the stem and the primary and older secondary phloem get crushed in a woody dicot stem which shows extensive secondary growth.
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Which of the following statements is correct about a woody dicot stem ...
Explanation:
Primary xylem persists in the centre of the axis:
In a woody dicot stem that shows extensive secondary growth, the primary xylem does not persist in the centre of the axis. Instead, it gets pushed towards the center by the continuous production of new secondary xylem. The primary xylem is mainly responsible for conducting water and minerals in the early stages of stem development.
Primary and the older secondary phloem get crushed:
As the stem undergoes extensive secondary growth, the primary and older secondary phloem layers get crushed. The secondary growth in the stem leads to the formation of a new layer of secondary phloem towards the outside of the stem, which puts pressure on the older layers, causing them to collapse and get crushed.
Secondary xylem forms the bulk of the stem:
The correct statement is that the secondary xylem forms the bulk of the stem in a woody dicot stem that shows extensive secondary growth. Secondary growth in stems occurs due to the activity of the vascular cambium, which produces secondary xylem towards the inside of the stem and secondary phloem towards the outside. The secondary xylem accumulates over time and forms the majority of the woody stem, providing structural support and conducting water and minerals.
Therefore, the correct statement is that in a woody dicot stem showing extensive secondary growth, all of the given options are correct. Primary xylem is pushed towards the center, primary and older secondary phloem get crushed, and secondary xylem forms the bulk of the stem.
Primary xylem persists in the centre of the axis:
In a woody dicot stem that shows extensive secondary growth, the primary xylem does not persist in the centre of the axis. Instead, it gets pushed towards the center by the continuous production of new secondary xylem. The primary xylem is mainly responsible for conducting water and minerals in the early stages of stem development.
Primary and the older secondary phloem get crushed:
As the stem undergoes extensive secondary growth, the primary and older secondary phloem layers get crushed. The secondary growth in the stem leads to the formation of a new layer of secondary phloem towards the outside of the stem, which puts pressure on the older layers, causing them to collapse and get crushed.
Secondary xylem forms the bulk of the stem:
The correct statement is that the secondary xylem forms the bulk of the stem in a woody dicot stem that shows extensive secondary growth. Secondary growth in stems occurs due to the activity of the vascular cambium, which produces secondary xylem towards the inside of the stem and secondary phloem towards the outside. The secondary xylem accumulates over time and forms the majority of the woody stem, providing structural support and conducting water and minerals.
Therefore, the correct statement is that in a woody dicot stem showing extensive secondary growth, all of the given options are correct. Primary xylem is pushed towards the center, primary and older secondary phloem get crushed, and secondary xylem forms the bulk of the stem.
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Which of the following statements is correct about a woody dicot stem which shows extensive secondary growth?a)Primary xylem persists in the centre of the axis.b)Primary and the older secondary phloem get crushed.c)Secondary xylem forms the bulk of the stemd)all of theseCorrect answer is option 'D'. Can you explain this answer?
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Which of the following statements is correct about a woody dicot stem which shows extensive secondary growth?a)Primary xylem persists in the centre of the axis.b)Primary and the older secondary phloem get crushed.c)Secondary xylem forms the bulk of the stemd)all of theseCorrect answer is option 'D'. 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 Which of the following statements is correct about a woody dicot stem which shows extensive secondary growth?a)Primary xylem persists in the centre of the axis.b)Primary and the older secondary phloem get crushed.c)Secondary xylem forms the bulk of the stemd)all of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct about a woody dicot stem which shows extensive secondary growth?a)Primary xylem persists in the centre of the axis.b)Primary and the older secondary phloem get crushed.c)Secondary xylem forms the bulk of the stemd)all of theseCorrect answer is option 'D'. Can you explain this answer?.
Which of the following statements is correct about a woody dicot stem which shows extensive secondary growth?a)Primary xylem persists in the centre of the axis.b)Primary and the older secondary phloem get crushed.c)Secondary xylem forms the bulk of the stemd)all of theseCorrect answer is option 'D'. 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 Which of the following statements is correct about a woody dicot stem which shows extensive secondary growth?a)Primary xylem persists in the centre of the axis.b)Primary and the older secondary phloem get crushed.c)Secondary xylem forms the bulk of the stemd)all of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct about a woody dicot stem which shows extensive secondary growth?a)Primary xylem persists in the centre of the axis.b)Primary and the older secondary phloem get crushed.c)Secondary xylem forms the bulk of the stemd)all of theseCorrect answer is option 'D'. Can you explain this answer?.
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