A mating system in which a female mates with only one male during a breeding season or for her lifetime.

An outdated term that referred to organisms in the kingdom Monera, including bacteria and cyanobacteria.

An antibody produced by a single clone of cells, used for targeted therapy and diagnostics in medicine.

A plant with one cotyledon (seed leaf) in its seed, typically having parallel-veined leaves and flower parts in multiples of three.

A plant that has only one cotyledon (seed leaf), commonly found in grasses, lilies, and palms.

The agricultural practice of growing a single crop species in a given area over a large scale, often leading to reduced biodiversity.

A type of white blood cell that is part of the immune system, responsible for engulfing pathogens and debris.

A term describing a plant species that has both male and female reproductive organs on the same individual.

A substance that slows down the speed of neutrons in nuclear reactions, often used in nuclear reactors.

A unit in chemistry representing 6.022 x 10²³ particles of a substance (Avogadro’s number).