Question

The two families that dominate in having maximum useful plants
A. Fabaceae and Poaceae
B. Liliaceae and Solanaceae
C. Malvaceae and Brassicaceae
D. Liliaceae and Poaceae

Answer 1

Hint: Family of grasses includes maize, rice, wheat, barley, etc. and family of legumes consist of legumes, beans, pea, etc. Both these families are economically very important as they provide staple food to a vast population.

Complete answer:
The Fabaceae or Leguminosae family is also commonly referred to as the family of pea or legumes. They are mostly herbaceous and belong to a family of flowering plants having high economic importance. The family Poaceae which is also commonly known as the family of grasses is also economically very important. It consists of monocotyledonous flowering plants. It produces plants like maize, barley, rice, oats, ryegrass, etc. which forms staple food and thus are economically very important.
On the other hand, family Malvaceae (which is commonly known as the mallows), Liliaceae (commonly known as the lily family), Solanaceae (commonly known as the nightshades) are the families of flowering plants.

So, the correct answer is option “A” that is the two families that dominate in having maximum useful plants are Fabaceae and Poaceae.

Note: Grasses are economically very important. They form an important part of food production. They cover a major portion in lawns and they are used in industries also. They are used as food for domestic animals. Grains of grasses such as maize, rice, wheat and barley form important food crops for the population of humans. Furthermore, plants of Fabaceae or Leguminosae family are an essential source of proteins. They are also used for fixing atmospheric nitrogen thereby reducing the cost of fertilizers to farmers.