Sporophytes (2n) undergo meiosis to produce spores that develop into gametophytes (1n) which undergo mitosis. Describe the role of the sporophyte and gametophyte in plant reproduction. The diploid stage of a plant (2n), the sporophyte, bears a sporangium, an organ that produces spores during meiosis.
In chemistry, a ketone (alkanone) /ËkiËtoÊn/ is an organic compound with the structure RC(=O)R', where R and R' can be a variety of carbon-containing substituents. Ketones and aldehydes are simple compounds that contain a carbonyl group (a carbon-oxygen double bond).etones differ from aldehydes in that the carbonyl group (CO) is bonded to two carbons within a carbon skeleton. In aldehydes, the carbonyl is bonded to one carbon and one hydrogen and are located at the ends of carbon chains.
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia. Related to Ketones: ketoacidosis, ketosis, diabetic ketoacidosis. A class of acidic organic compounds that includes acetone and aceto-acetic acid. Ketones have a carbonyl group, CO, linked to two other carbon atoms. They are formed in states of carbohydrate deficiency such as starvation or in conditions, such as DIABETES, in which carbohydrates cannot be normally utilized. Acetone, aceto-acetic acid and beta-hydroxybutyric acid are called ketone bodies.