Nature - Poaceae - online puzzles

Poaceae

Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns and pasture. The latter are commonly referred to collectively as grass.

With around 780 genera and around 12,000 species, the Poaceae is the fifth-largest plant family, following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae.The Poaceae are the most economically important plant family, providing staple foods from domesticated cereal crops such as maize, wheat, rice, barley, and millet as well as feed for meat-producing animals. They provide, through direct human consumption, just over one-half (51%) of all dietary energy; rice provides 20%, wheat supplies 20%, maize (corn) 5.5%, and other grains 6%. Some members of the Poaceae are used as building materials (bamboo, thatch, and straw); others can provide a source of biofuel, primarily via the conversion of maize to ethanol.

Grasses have stems that are hollow except at the nodes and narrow alternate leaves borne in two ranks. The lower part of each leaf encloses the stem, forming a leaf-sheath. The leaf grows from the base of the blade, an adaptation allowing it to cope with frequent grazing.

Grasslands such as savannah and prairie where grasses are dominant are estimated to constitute 40.5% of the land area of the Earth, excluding Greenland and Antarctica. Grasses are also an important part of the vegetation in many other habitats, including wetlands, forests and tundra.

Though they are commonly called "grasses", groups such as the seagrasses, rushes and sedges fall outside this family. The rushes and sedges are related to the Poaceae, being members of the order Poales, but the seagrasses are members of order Alismatales. However, all of them belong to the monocot group of plants.

Beautiful collage online puzzleFlowers puzzle online from photoFloral collage puzzle online from photowonders of nature puzzle online from photoCollage puzzle online from photoFlowers puzzle online from photoA cuddly toy puzzle online from photoAlaska puzzle online from photoFlowers online puzzlehorses online puzzleFlowers online puzzleKicia hi hi. puzzle online from photoBungle Bungles (Australia) online puzzlenature online puzzleDog puzzle online from photoeggs puzzle online from photoFlowers online puzzleRed tulips puzzle online from photoFruit online puzzleCottage In Peace puzzle online from photoSan Juan Mountains in Colorado (USA) puzzle online from photoFloral collage puzzle online from photoDog online puzzleHello, are you there online puzzle
Floral collage puzzle online from photoFlowers puzzle online from photoFlowers online puzzleBay of Kotor (Montenegro) online puzzleBeautiful springs flowers puzzle online from photoFloral collage puzzle online from photoBefore fall online puzzleDahlias - flowers puzzle online from photoInsects insects puzzle online from photoSweety puzzle online from photoFlowers online puzzleWhat do I see there? online puzzleKaczuchy on the Vistula puzzle online from photoflowers online puzzleAutumn :) puzzle online from photorose online puzzleWhite Horse online puzzleDunajec online puzzleAutumn San online puzzleflowers collage online puzzleFlowers with blueberries puzzle online from photoFloral Mix puzzle online from photoFloral collage puzzle online from photoColorful trees puzzle online from photo
Copyright 2024 www.epuzzle.info All rights reserved.