Glossary of terms used on this site
Glossary of biology.
Glossaries
Term | Main definition |
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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 |