Morphology of Flowering Plants Test - 9

Solanaceae or nightshades are an economically important family of flowering plants. The family ranges from annual and perennial herbs to vines, epiphytes, shrubs and trees. In Solanaceae, the gynoecium is Bicarpellary, syncarpous, ovary superior, bilocular, axile placentation, placenta swollen, many ovules in each locule, ovary obliquely placed, style simple; stigma bifid or capitate.

So, the correct answer is 'Solanaceae'.

Trimerous, flower, axile placentation and superior very are the characteristic feature of family Lillaceae. For example, the members of Liliaceae family are onion, garlic. Cucurbitaceae, Compositae have characteristic pentamerous flowers,  taproot end and reticulate venation in leaves.
Thus, the correct answer is option A.

Vexillary aestivation of the corolla is a characteristic of the family - Papilionaceae in which corolla (petals) are papilionaceous. In papilionaceous corolla, the posterior petal called vexillum is largest, two lateral, curved petals are called wings and two anterior, boat-shaped petals are called keels.

The fact is, tobacco is one of the most common names of many plants comes under the Solanaceae or nightshade and Nicotiana.
It is general term for the products produced from the leaves of this plant. Though over 70 species of tobacco exist in the world, the most common ones are from the N. Tabacum.

Colchicum autumnale, commonly known as autumn crocus or meadow saffron is a toxic autumn-blooming flowering plant belonging to the family Liliaceae. It is a perennial herb and it is commonly cultivated as an ornamental in temperate areas, in spite of its toxicity. The bulb-like corms of Colchicum autumnale contain colchicine, a drug which is used in the treatment of gout. It is also used in plant breeding to produce polyploid strains. So, the correct answer is 'Liliaceae'.