Question

Corolla is papilionaceous in
A. Fabaceae
B. Asteraceae
C. Poaceae
D. Solanaceae

Answer 1

Hint: The papilionaceous corolla is present in the bean or pea with usually five petals that include a large upper petal, enclosing two lateral wings and a lower carina of two united petals.

Complete answer:
The corolla is the second axillary whorl composed of the petals.
Like the calyx and the corolla it also protects essential stamens and carpels within. The papilionaceous corolla has five free petals resembling a butterfly. The posterior and the superior petal is larger than others, two anterior and inferior petals which are usually more or less united forming a boat-shaped structure; two lateral petals called wings overlap the carina and are themselves overlapped with the vexillum. These are the characteristics of the subfamily Papilionaceae, for example, a pea flower belonging to the family Fabaceae. The papilionaceous have an irregular corolla shaped somewhat like a butterfly. Belonging to the family Papilionaceae Fabaceae, that is often included as part of the Leguminosae.
Therefore, the correct answer is option A.

Additional information: The Fabaceae or Leguminosae is commonly known as the legume, pea, or bean family. It is a large and economically important family of flowering plants. It includes trees, shrubs, and perennial or annual herbaceous plants, which are easily recognized by their fruit and their compound, stipulated leaves.

Note: The Fabaceae family is known as legumes and is one of the most important plant families in both the ecological and in the economic terms. The legumes help to increase soil nitrogen and provide rich sources of vegetable protein to humans, livestock and wild animals.