Which one of the following tissues is responsible for increase of girth in the stem of a plant?

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Q: (CDS-I/2019)
Which one of the following tissues is responsible for increase of girth in the stem of a plant?

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,36,25,5,4,16,36

keywords: 

{'lateral meristem': [0, 0, 0, 1], 'girth': [0, 0, 0, 2], 'tissues': [6, 0, 3, 7], 'tracheid': [1, 0, 0, 1], 'plant': [1, 0, 0, 2], 'stem': [1, 0, 0, 0], 'pericycle': [1, 0, 0, 1], 'intercalary meristem': [0, 0, 0, 2], 'increase': [3, 1, 10, 35]}

Option 1: Tracheids are a type of cells that transport water and minerals in the xylem tissue of plants. These cells are responsible for water movement, not for the increase in the girth of the stem. Therefore, option 1 is incorrect.

Option 2: The pericycle is a tissue located in the outer layer of the plant`s vascular cylinder. It has roles in lateral root development and nutrient uptake. However, the pericycle is not responsible for the increase in stem girth. Therefore, option 2 is incorrect.

Option 3: Intercalary meristem is a type of meristematic tissue found in the internodes of grasses and some other monocots. It is responsible for the elongation of stems. It does not contribute to the increase in stem girth. Therefore, option 3 is incorrect.

Option 4: Lateral meristem, specifically the vascular cambium and the cork cambium, is responsible for the increase in the girth of the stem. The vascular cambium produces secondary xylem towards the inside of the stem and secondary phloem towards the outside. This results in the thickening of the stem. Therefore, option 4 is correct.

In conclusion, the tissue responsible for the increase

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