Question

Collenchyma occurs in the stem and petioles of

• A. xerophytes
• B. monocots
• C. dicot herbs
• D. hydrophytes.

Answer 1

The Correct Option is C

The question asks about the type of plant in which collenchyma tissue occurs in the stem and petioles. Let's analyze each option and understand the biological context to arrive at the correct answer.

1. Xerophytes: These are plants adapted to survive in environments with little water, like deserts. They often have modified structures to conserve water. Collenchyma is generally not the primary tissue associated with xerophytes in their stems and petioles.
2. Monocots: Monocotyledonous plants, like grasses, have a different structure in their stems. In monocots, vascular bundles are scattered, and collenchyma is not typically a supporting tissue in the stems and petioles.
3. Dicot herbs: These are herbaceous dicotyledonous plants. Collenchyma is prevalent in the stems and petioles of many dicot herbs, providing flexible structural support. This tissue is located just under the epidermis, primarily in young dicot plants, where it contributes to strength and flexibility without restricting growth.
4. Hydrophytes: These plants live in water environments and usually have specialized structures for floating or maintaining buoyancy, rather than relying on collenchyma for support.

Based on the above analysis, the correct answer is that collenchyma occurs in the stems and petioles of dicot herbs.