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Which of the following do not undergo anysecondary growth?
- a)Dicotyledonous stem
- b)Monocotyledonous root
- c)Monocotyledonous stem
- d)Both (B) and (C)
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Which of the following do not undergo anysecondary growth?a)Dicotyledo...
Monocotyledonous roots and stems generally do not undergo secondary growth:
Monocotyledonous roots
Monocot roots do not undergo secondary growth because they lack vascular cambium, which is found in the vascular bundle between the xylem and phloem.
Monocotyledonous stems
Monocot stems do not undergo secondary growth, but they can increase in girth. This is called anomalous thickening and does not result in the development of secondary xylem and phloem
Most Upvoted Answer
Which of the following do not undergo anysecondary growth?a)Dicotyledo...
Monocotyledonous roots do not undergo any secondary growth.
Explanation:
Secondary growth refers to the increase in girth or thickness of the stem or root of a plant. This process is initiated by the activity of the lateral meristem, which produces secondary tissues such as secondary xylem and phloem. Monocotyledonous plants lack a lateral meristem, and hence they do not undergo any significant secondary growth.
Some key points to support the answer are:
- Monocotyledonous plants have a single cotyledon in their seeds, while dicotyledonous plants have two cotyledons.
- The stem of a dicotyledonous plant has a cylindrical shape, and it undergoes secondary growth, resulting in the formation of a woody stem. In contrast, the stem of a monocotyledonous plant is usually slender and does not undergo significant secondary growth.
- Similarly, the root of a dicotyledonous plant develops a taproot system, and it undergoes secondary growth, resulting in the formation of woody roots. However, the root of a monocotyledonous plant usually has a fibrous root system and does not undergo significant secondary growth.
Therefore, the correct option is D, i.e., monocotyledonous roots do not undergo any secondary growth.
Explanation:
Secondary growth refers to the increase in girth or thickness of the stem or root of a plant. This process is initiated by the activity of the lateral meristem, which produces secondary tissues such as secondary xylem and phloem. Monocotyledonous plants lack a lateral meristem, and hence they do not undergo any significant secondary growth.
Some key points to support the answer are:
- Monocotyledonous plants have a single cotyledon in their seeds, while dicotyledonous plants have two cotyledons.
- The stem of a dicotyledonous plant has a cylindrical shape, and it undergoes secondary growth, resulting in the formation of a woody stem. In contrast, the stem of a monocotyledonous plant is usually slender and does not undergo significant secondary growth.
- Similarly, the root of a dicotyledonous plant develops a taproot system, and it undergoes secondary growth, resulting in the formation of woody roots. However, the root of a monocotyledonous plant usually has a fibrous root system and does not undergo significant secondary growth.
Therefore, the correct option is D, i.e., monocotyledonous roots do not undergo any secondary growth.
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Community Answer
Which of the following do not undergo anysecondary growth?a)Dicotyledo...
Because there is absence of cambium in vascular bundle in b/w xylem and phloem no secondary growth is seen in monocotyledenous plant (stem and root).
so I think option "b" and "d" are correct .
so I think option "b" and "d" are correct .
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Which of the following do not undergo anysecondary growth?a)Dicotyledonous stemb)Monocotyledonous rootc)Monocotyledonous stemd)Both (B) and (C)Correct answer is option 'D'. Can you explain this answer?
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