Skip to main content
Select Source:

plastid

plastid An organelle within a plant cell, often occurring in large numbers. Apart from the nucleus, plastids are the largest solid inclusions in a plant cell. For convenience they are classified into those containing pigments (chromoplasts) and those that are colourless (leucoplasts), although changes from one to the other frequently occur. Plastids develop from proplastids, colourless bodies found in meristematic and immature cells; they also arise by division of existing plastids. See also chloroplast.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"plastid." A Dictionary of Biology. . Encyclopedia.com. 20 Sep. 2017 <http://www.encyclopedia.com>.

"plastid." A Dictionary of Biology. . Encyclopedia.com. (September 20, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/plastid-0

"plastid." A Dictionary of Biology. . Retrieved September 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/plastid-0

plastid

plastid An organelle that is believed to have evolved from an autotrophic (see AUTOTROPH) endosymbiont early in plant evolution. Plastids occur in a variety of morphologies, including chloroplasts, chromoplasts, and leucoplasts, which are capable of being interchangeable. (Chloroplasts can develop into chromoplasts, and leucoplasts into chloroplasts.)

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"plastid." A Dictionary of Plant Sciences. . Encyclopedia.com. 20 Sep. 2017 <http://www.encyclopedia.com>.

"plastid." A Dictionary of Plant Sciences. . Encyclopedia.com. (September 20, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/plastid

"plastid." A Dictionary of Plant Sciences. . Retrieved September 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/plastid

plastid

plastid Type of organelle (specialized structure) found in the cells of plants and green algae. Chloroplasts and leucoplasts are two examples of plastids, which have a double membrane and contain DNA.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"plastid." World Encyclopedia. . Encyclopedia.com. 20 Sep. 2017 <http://www.encyclopedia.com>.

"plastid." World Encyclopedia. . Encyclopedia.com. (September 20, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/plastid

"plastid." World Encyclopedia. . Retrieved September 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/plastid

plastid

plas·tid / ˈplastid/ • n. Bot. any of a class of small organelles, such as chloroplasts, in the cytoplasm of plant cells, containing pigment or food.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"plastid." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 20 Sep. 2017 <http://www.encyclopedia.com>.

"plastid." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (September 20, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/plastid

"plastid." The Oxford Pocket Dictionary of Current English. . Retrieved September 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/plastid