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Cotyledon is also known as seed leaf. It is the first leaf or pair of leaves produced by the embryo of a seed plant.
The pair of slender ducts are called the fallopian tubes, also known as uterine tubes. They play a crucial role in transporting eggs from the ovaries to the uterus for fertilization.
Salivary glands are composed of acini (clusters of secretory cells) that produce saliva, which is then transported through ducts to the oral cavity. The acini are surrounded by myoepithelial cells that help expel saliva into the ducts. Salivary glands also contain connective tissue, blood vessels, and nerves for support and regulation of saliva production.
Four moons of Jupiter, also known as the Galilean moons, can be seen with a pair of binoculars. They are named Io, Europa, Ganymede, and Callisto. These four moons were first observed by Galileo Galilei in 1610 and have become famous objects of study in astronomy.
Allium cepa, also known as onion, has a total of 16 chromosomes. These chromosomes exist as eight pairs, with each pair consisting of two homologous chromosomes.