To address your question about which family exhibits the characteristic of verticillaster inflorescence, the correct answer is C. Labiatae, also known as the mint family. Let’s delve deeper into what verticillaster inflorescence is and why it is specifically associated with this family.
Understanding Verticillaster Inflorescence
Verticillaster is a type of inflorescence where flowers are arranged in whorls or clusters at the nodes of the stem. This structure is particularly common in plants that belong to the Labiatae family. In a verticillaster, you typically find two or more flowers emerging from the same node, creating a dense and often visually striking arrangement.
Characteristics of the Labiatae Family
The Labiatae family, which includes many aromatic herbs such as mint, basil, and sage, is characterized by:
- Square stems: Unlike many other plant families, members of the Labiatae family often have stems that are square in cross-section.
- Opposite leaves: The leaves are typically arranged opposite each other on the stem.
- Essential oils: Many species produce essential oils, contributing to their aromatic properties.
Comparative Analysis with Other Families
To clarify why the other options do not fit, let’s briefly examine them:
- A. Cucurbitaceae: This family, which includes cucumbers and pumpkins, typically has solitary flowers or racemes, not verticillaster inflorescences.
- B. Rubiaceae: While this family can have complex inflorescences, they usually feature different arrangements, such as cymes or panicles.
- D. Asteraceae: Known for their composite flower heads, Asteraceae does not exhibit verticillaster inflorescence but rather a capitulum structure.
Examples of Verticillaster in Labiatae
Common examples of plants with verticillaster inflorescence include:
- Mint (Mentha): The flowers are arranged in dense whorls, making them attractive to pollinators.
- Thyme (Thymus): This herb also showcases the characteristic whorled flower arrangement.
In summary, the verticillaster inflorescence is a defining feature of the Labiatae family, setting it apart from other plant families. Understanding these characteristics not only helps in plant identification but also enhances our appreciation of botanical diversity.