nacre
(Science: zoology) A pearly substance which lines the interior of many shells, and is most perfect in the mother-of-pearl.
Alternative forms: nacker and naker See pearl, and mother-of-pearl.
Origin: F, cf. Sp. Nacara, nacar, It. Nacchera, naccaro, LL. Nacara, nacrum; of Oriental origin, cf. Ar. Nakir hollowed.
This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..
DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..
Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..