Tag: morphology of flowering plants

Poaceae, formerly called as Gramineae because it includes grasses. It is a large family of monocotyledonous flowering plants. Poaceae includes cereals, bamboos and grasses of natural grassland. It is an economically important family of plants, providing staple foods from domesticated cereal crops such as maize, wheat, barley etc. 

A pistil may consist of carpels, ovary, style, stigma, carpels may join together with a single ovary. Poaceae is a large family of monocotyledonous flowering plants which are collectively referred to as grasses. In Poaceae, the stigmas are 2 which are usually feathery and they are borne directly over an ovary. This is the peculiar feature of the pistil in Poaceae.

Caryopsis is a dry one-seeded fruit in which the ovary wall is united with the seed coat and fused into a single unit. It is a type of simple dry fruit which is monocarpellate (formed from a single carpel), indehiscent (not opening at maturity). The caryopsis is commonly called grain and caryopsis fruit is characteristic of family Poaceae.

A culm is the areal jointed stem (above ground) of grass or bamboo. Typically, the culms are hollow but some species of bamboo have solid culms. In members of Poaceae family, the stem is underground rhizome in all perennial grasses, cylindrical, culm with conspicuous nodes and internodes, internodes hollow, herbaceous or woody, glabrous or glaucous, vegetative shoots are arising from the base of aerial stem or from underground stems.

Poaceae or Gramineae is a large family of monocotyledonous flowering plants which are collectively referred to as grasses. In Poaceae, the gynoecium is monocarpellary, ovary superior, unilocular with a single ovule, basal placentation, style short, stigma (usually 2 )feathery, papillate or branched.

Russian millet, Digitaria is the genus of plants belonging to family Poaceae or Gramineae. It is native to tropical and warm temperate regions. Digitariaoccursies occur in tropical, subtropical and temperate regions of both the hemispheres. The major Russian millet producing state in India is Rajasthan, followed by Maharashtra, Haryana, Gujarat and Uttar Pradesh.

Wheat is a common crop that is facing many pests and diseases problem. Such as Barley Yellow Dwarf, Black Chaff, Crown and Root Rot, Fusarium Head Blight (Scab), Leaf Rust., Tan Spot, Wheat Soil-borne Mosaic, and Wheat Streak Mosaic. But gram, groundnut, and rice are also having pests and diseases but not in large numbers in comparison to wheat.

Thus the correct option is A. 

Poaceae or Gramineae is a large family of monocotyledonous flowering plants which are collectively referred to as grasses. It includes cereals, grasses of natural grasslands, bamboos. It is the most economically important plant family, providing staple foods from domesticated cereal crops such as maize, wheat, barley, millet. Millets are a group of highly variable small seed grasses which is widely grown worldwide as grains for human food and fodder.

Jowar (Sorghum bicolor) belongs to the grass family, which is scientifically known as Poaceae (formerly Gramineae).

Wheat and Rice belongs to family Poaceae.  The scientific name of wheat is Triticum aestivum.