Dictionary > Nocturnality

Nocturnality

Definition
noun, plural: nocturnalities
(1) The condition of being active or occurring during the night
(2) The active behavior of an animal or plant during the night (and then inactive during the day)
Supplement
Nocturnality refers to the condition of being active or occurring during the night and not during day time. It may particularly pertain to the behavior of an animal or a plant that is active during the night and not during the day. It is in contrast to diurnality wherein it is associated with a behavior that is active during the day and not at night. Nevertheless, similar to diurnality, nocturnality in regards to behavior may be influenced by environmental factors, e.g. temperature, food hunting, and predation risk. An animal or a plant that is active at night is described as nocturnal (whereas those that are active during the day are described as ”diurnal). For instance, animals that actively hunt and plants that bloom at night are described as nocturnal. Nocturnal animals often have a highly developed sense for smell and hearing. They also have eyesight adapted for low light levels. Tarsiers and nocturnal owls have eyes that are large relative to diurnal animals. Their large eyes enable them to have improved visual sensitivity in low-light conditions.
Word origin: Middle French nocturnal, Latin nocturnus ‎(“nocturnal, nightly”), Latin nox ‎(“night”)
Compare:

Related form(s):

  • nocturnal (adjective)


    You will also like...

    Population Growth and Survivorship
    Population Growth and Survivorship

    This lesson looks at population attributes, regulation, and growth. It also covers population genetics, particularly gen..

    Homeostasis by water regulation
    Homeostasis of Organism Water Regulation

    Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..

    Chemical effects on plant growth and development
    Effect of Chemicals on Growth & Development in Organisms

    Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..

    Genetic engineering
    Genetic Engineering Advantages & Disadvantages

    This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..

    Chromosomes X and Y and Sex Determination
    Chromosomes X and Y and Sex Determination

    This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

    DNA molecule
    Genetic Control – On and Off Genes

    Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..