Answer:

The correct answer is option A) Flower: Zygomorphic.

Explanation:

The family Solanaceae, also known as the nightshade family, includes a wide variety of flowering plants. These plants have several distinct floral characteristics that help differentiate them from other families. Let's examine each of the given options to understand why option A is incorrect.

a) Flower: Zygomorphic:
Zygomorphic flowers are those that can be divided into symmetrical halves along only one plane. In Solanaceae, the flowers are typically actinomorphic, which means they are radially symmetrical and can be divided into similar halves along multiple planes. This feature allows for easier pollination by a wide range of pollinators. Therefore, option A is incorrect.

b) Calyx: Valvate aestivation:
Aestivation refers to the arrangement of floral parts in the bud. Valvate aestivation means that the sepals in the calyx overlap at the margins without any part being inside or outside the others. This is a correct floral character of Solanaceae. The sepals are usually green and fused at the base, forming a tubular or bell-shaped calyx.

c) Stamens: Epipetalous:
Epipetalous stamens are those that are attached to the petals. In Solanaceae, the stamens are often epipetalous, meaning they are attached to the corolla (petals) of the flower. This arrangement is common in many plants of the family and can be observed in flowers such as tomato, potato, and tobacco.

d) Fruit: Berry or capsule:
The fruit in Solanaceae can be either a berry or a capsule. A berry is a fleshy fruit with multiple seeds embedded in the pulp, such as tomatoes or peppers. On the other hand, a capsule is a dry fruit that opens to release its seeds, such as in the case of the genus Datura or Physalis. This is a correct floral character of Solanaceae.

In conclusion, the correct answer is option A) Flower: Zygomorphic, as the flowers of Solanaceae are typically actinomorphic rather than zygomorphic.