What is a sipracle?
What are the example of sipracles and what are non-example of sipracles?
Answers
DEFINITION:
an external respiratory opening, especially each of a number of pores on the body of an insect, or each of a pair of vestigial gill slits behind the eye of a cartilaginous fish.
EXAMPLES:
Southern stingrays are sand-dwelling sea animals that use their spiracles to breathe when they are lying on the ocean bottom. Spiracles behind the ray's eyes draw in water, which is passed over the gills and expelled from its gills on its underside
NON-EXAMPLES:
Hammerheads and chimeras don't have spiracles
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Answer:
Spiracle, in arthropods, the small external opening of a trachea (respiratory tube) or a book lung (breathing organ with thin folds of membrane resembling book leaves). Spiracles are usually found on certain thoracic and abdominal segments. ... In tadpoles the spiracle is the excurrent opening from the gill chamber.
Explanation:
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