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primary stem is...

primary stem is

A

main stem

B

stem having distinct nodes

C

stem having only primary tissues

D

stem having branches.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Concept of Primary Stem**: - The primary stem refers to the part of the plant that undergoes primary growth, which is the increase in length. This growth occurs at the tips of roots and stems. 2. **Identifying Characteristics of Primary Stem**: - The primary stem is characterized by the presence of primary tissues. These tissues include the epidermis, cortex, and primary vascular tissues (xylem and phloem). 3. **Evaluating the Given Options**: - The options provided are: 1. Main stem 2. Stem having distinct nodes 3. Stem having only primary tissues 4. Stem having branches - We need to determine which option accurately describes the primary stem. 4. **Analyzing Each Option**: - **Main stem**: This could refer to any central stem but does not specifically denote primary growth or primary tissues. - **Stem having distinct nodes**: While stems do have nodes, this characteristic does not define a primary stem. - **Stem having only primary tissues**: This option accurately describes the primary stem, as it specifically mentions the presence of only primary tissues. - **Stem having branches**: Branching can occur in both primary and secondary stems, so this does not specifically define a primary stem. 5. **Conclusion**: - Based on the analysis, the correct answer is **the stem having only primary tissues**. ### Final Answer: The primary stem is the **stem having only primary tissues**.
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