Glossary of terms used on this site
Glossary of biology.
Glossaries
Term | Main definition |
---|---|
nacre | Glossaries - Biology glossary calcareous secretion produced by bivalves to line the inner side of shells as well as to coat intruding particulate matter |
nasal cavity | Glossaries - Biology glossary opening of the respiratory system to the outside environment |
natural killer (NK) cell | Glossaries - Biology glossary lymphocyte that can kill cells infected with viruses or tumor cells |
natural science | Glossaries - Biology glossary field of science that is related to the physical world and its phenomena and processes |
natural selection | Glossaries - Biology glossary |
nauplius | Glossaries - Biology glossary larval stage in the early development of crustaceans |
nectar | Glossaries - Biology glossary liquid rich in sugars produced by flowers to attract animal pollinators |
nectar guide | Glossaries - Biology glossary pigment pattern on a flower that guides an insect to the nectaries |
negative feedback loop | Glossaries - Biology glossary feedback to a control mechanism that increases or decreases a stimulus instead of maintaining it |
negative gravitropism | Glossaries - Biology glossary growth away from Earth’s gravity |
negative polarity | Glossaries - Biology glossary ssRNA viruses with genomes complementary to their mRNA |
nematocyst | Glossaries - Biology glossary |
Nematoda | Glossaries - Biology glossary phylum of worm-like animals that are triploblastic, pseudocoelomates that can be free-living or parasitic |
Nemertea | Glossaries - Biology glossary phylum of dorsoventrally flattened protostomes known as ribbon worms |
Neognathae | Glossaries - Biology glossary birds other than the Paleognathae |