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  2. Glossary of botanical terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_botanical_terms

    pl. adelphiae A bundle or structure of stamens forming one unit in an adelphous flower; for example, the stamen tube around the pistil of Hibiscus. adelphous Having organs, particularly filament s such as stamen s, connected into one or more adelphiae, whether in the form of bunches or tubes, such as is commonly seen in families such as Malvaceae. Usage of the term is not consistent; some ...

  3. Eimer's organ - Wikipedia

    en.wikipedia.org/wiki/Eimer's_organ

    Eimer's organ. Eimer's organs are organs for the sense of touch, shaped like bulbous papillae, formed from modified epidermis. First isolated by Theodor Eimer from the European mole in 1871, these organs are present in many moles, and are particularly dense on the star-nosed mole, which bears 25,000 of them on its unique tentacled snout.

  4. Spider anatomy - Wikipedia

    en.wikipedia.org/wiki/Spider_anatomy

    External anatomy. The underside and head of a female spider. Spiders, unlike insects, have only two main body parts (tagmata) instead of three: a fused head and thorax (called a cephalothorax or prosoma) and an abdomen (also called an opisthosoma). The exception to this rule are the assassin spiders in the family Archaeidae, whose cephalothorax ...

  5. Respiratory system of insects - Wikipedia

    en.wikipedia.org/wiki/Respiratory_system_of_insects

    An insect 's respiratory system is the system with which it introduces respiratory gases to its interior and performs gas exchange. Air enters the respiratory systems of insects through a series of external openings called spiracles. These external openings, which act as muscular valves in some insects, lead to the internal respiratory system ...

  6. List of organs of the human body - Wikipedia

    en.wikipedia.org/wiki/List_of_organs_of_the...

    This article contains a list of organs in the human body. It is widely believed that there are 79 organs (this number goes up if you count each bone and muscle as an organ on their own, which is becoming a more common practice [1] [2]); however, there is no universal standard definition of what constitutes an organ, and some tissue groups' status as one is debated. [3]

  7. Symmetry in biology - Wikipedia

    en.wikipedia.org/wiki/Symmetry_in_biology

    The front end encounters the environment before the rest of the body so sensory organs such as eyes tend to be clustered there. This is also the site where a mouth develops since it is the first part of the body to encounter food. Therefore, a distinct head, with sense organs connected to a central nervous system, tends to develop. [17]

  8. List of compositions for organ - Wikipedia

    en.wikipedia.org/wiki/List_of_compositions_for_organ

    Eight Short Preludes and Fugues (BWV 553–560) possibly composed by Johann Tobias Krebs. Toccata and Fugue in D minor (BWV 565) – possibly Bach's transcription of a violin work, or indeed a piece by another composer. Bairstow, Edward. Organ Sonata (1937) Beethoven, Ludwig van. Fugue in D major for organ, WoO 31 (1783)

  9. Pipe organ - Wikipedia

    en.wikipedia.org/wiki/Pipe_organ

    The pipe organ is a musical instrument that produces sound by driving pressurised air (called wind) through the organ pipes selected from a keyboard. Because each pipe produces a single pitch, the pipes are provided in sets called ranks, each of which has a common timbre, volume, and construction throughout the keyboard compass.