Question

A graminaceous spikelet is surrounded by
A. Two scales called glumes
B. Two scales called lemma and pale
C. Two scales called lodicules
D. None of the above

Answer 1

Hint: Poaceous or Gramineae is the large and almost rife monocotyledonous flowering plant family known as grasses. Cereal grasses, bamboo grasses, natural grassland grasses, and lawn and pasture-grown plants are included. The above are also referred to collectively as grass.

Complete answer:
Poaceae, formerly called Gramineae, the monocotyledonous flowering plant grass family, a division of the Poales order. The Poaceae are the world's single most significant food source. In terms of the number of species, they rank among the top five flowering plant families.
Poaceae flowers are characteristically arranged in a spikelet of one or more florets each. The spikelet is further divided into panicles or spikes. The section of the spikelet that bears the florets is called the rachilla. A spikelet consists of two bracts, or glumes, at the base (or sometimes fewer), followed by one or more florets.
Every cereal or millet belongs to this family. These are the essential foods of humanity. Those plants are as follows: Triticum sp. (Wheat), Zea mays, Avena sativa (corn). saliva from Oryza (rice), Hordeum vulgare (barley 2), cereal scale (rye).
So, from the above discussion it is clear that the graminaceous spikelet is surrounded by two scales called glumes thus the correct answer is option A.

Note: In human terms, grasses are, possibly, the most economically important plant family. Their economic significance stems from a variety of fields, including the development of food, industry, and lawns. For up to 6,000 years, they have been cultivated as food for domesticated animals, and the most common human food crops have been grass grains such as wheat, rice, maize (corn), and barley. Grasses are also used in the development of roof, paper, fuel, clothing, insulation, fencing timber, furniture, scaffolding and building materials, floor matting, sports turf, and baskets.