Question

Poaceae was formerly called
A. Compositae
B. Cruciferae
C. Papilionaceae
D. Gramineae

Answer 1

Hint: Poaceae is a large and nearly ever present family of monocotyledonous flowering plants.They are known as grasses. It includes cereal grasses, bamboos and the grasses of natural and species cultivated in lawns and pasture.

Complete Answer:
Poaceae are the most economically important plant family as they provide staple foods from domesticated cereal crops such as wheat ,maize,rice,millet and barley as well as feed for meat-producing animals. They provide, through direct human consumption grassland ion, just over one-half of all dietary energy.Some members of the Poaceae are used as building materials (bamboo,thatch and straw),

Compositae is a very large and widespread family of flowering
Plant Angiospermae: The family includes more than 32,000 currently accepted species, in over 1,900 genera in 13 subfamilies. In terms of numbers of species, the Asteraceae are competed only by the Orchidaceae. Which is the larger family is not clear yet, because of the uncertainty about how many surviving species each family includes.

Cruciferae is a medium-sized and economically important family of flowering plants and are commonly known as the mustards, the crucifers, or the cabbage family. Most of them are herbaceous plants, deeply incised, alternatingly set leaves without stipules or in leaf rosettes, with terminal inflorescences without bracts.

Papilionaceae or Leguminosae, commonly known as the legume, pea, or bean family, are a large and economically important family of flowering plants. It includes shrubs,trees and perennial or annual herbaceous plants, which are easily recognized by their legume and their compound,stipulated leaves. Many legumes have their characteristic flowers and fruits. The poaceae is also known as gramineae

Hence the correct answer is D.

Note: The characteristics of Poaceae are,
- The leaves are simple, alternate, distichous and exstipulate.
- Seeds are monocot and endospermic.
- The stem can be underground (rhizomes), and as nodes and internodes.