Question

question: which specific type of meristem helps lengthen plant stems and roots? answer options: select one of four intercalary meristem apical meristem floral meristem lateral meristem

Explanation:

To determine the correct answer, we analyze the functions of each meristem type:

• Intercalary meristem: Primarily involved in the growth of internodes (the regions between nodes) in grasses and some monocots, but not the main meristem for overall stem and root elongation.
• Apical meristem: Located at the tips of roots and shoots, it is responsible for primary growth, which includes the elongation of stems and roots.
• Floral meristem: Involved in the development of flowers, not in stem and root elongation.
• Lateral meristem: Responsible for secondary growth (increase in girth), such as the vascular cambium and cork cambium, not for elongation.

Based on this analysis, the apical meristem is the one that helps lengthen plant stems and roots.

Answer:

B. Apical meristem