Glossary

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universal donor

Subject: 

  • Life Sciences

blood that has no antigens (blood group O) and can be given to a person with any blood group.

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ectosymbiosis
Subject:
Life Sciences

symbiosis where one organism lives on another (on the outside of another).

nomenclature
Subject:
Life Sciences

a system of naming organisms.

pulmonary arteries
Subject:
Life Sciences

blood vessels that transport deoxygenated blood from the heart to the lungs.

companion cells
Subject:
Life Sciences

modified phloem parenchyma cells that help translocate food substances in the plant.

trachea
Subject:
Life Sciences

the windpipe or tube that carries air. It is kept open by C-shaped rings of cartilage.