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define tracheal system in details respiratory system found in insects and some spiders where air passes directly to the tissues through a series of
signify the term - tracheapart of the respiratory system in insects vertebrates and some spiders in invertebrates it comprise tubules carrying air
what is the significance of torsionan unusual twisting of the gastropod body which has left all members of class with an asymmetric body plan and a
what do you understand by tegumentouter covering of parasitic flatworms including tapeworms and flukes comprising a syncytial outer layer of
what is tagma tagmosis and tagmatizationdistinct body regions resulting when different segments of a metameric animal become involved in specific
what do you mean by syconoid spongeof different sponge architectures this is intermediate in its complexity spongocoel is no longer lined with
specify the term in detail - swim bladderfound in bony fish this gas-filled chamber is used to main neutral buoyancy oxygen in blood is added or
what is strobilization elaboratethe process which converts scyphostome into a strobila during the life cycle of schyphozoans jellyfish transverse
determine the term -stolonin a number of colonial cnidarians ascidians and lophophorans a cord of tissue connects different zooids of colony to each
what is sporocyst specifya stage in the life cycle of trematode flukes sporocyst develops from the mericidium found in intermediate host every
define spiral cleavage in briefpattern of cell division in the developing embryo where products of the cell divisions shift by rotating either
what is the significance of spiculesany needlelike structure this term is very often thought of in conjunction with sponges and refers to needlelike
what is skeletal girdles explain in briefin vertebrates bones which connect the appendages on the left and right side of appendicular skeleton to
determine the significance of siphunclea cord of tissue that passes between different chambers of a nautilid shell siphuncle regulates the amount of
what do you understand by serial homologymetamerization results in a linear series of segments which share a common embryonic origin ancestrally all
what is the meaning of schizogonya form of asexual reproduction found in some protozoans an already multinucleated cell undergoes cell division which
describe schizocoelus and its roleone of two ways that a body cavity forms within mesoderm the other is enterocoelic pouching block of mesoderm
what is schistosomiasis explain in briefa disease cause by the trematode parasite schistosoma found around the world numerous species are responsible
what is the significance of rhynchocoelthe unique body cavity of the nemertean worms which comprise the retractable proboscis there is some debate on
what do you understand by pseudocoelomateanimals that have a body cavity which is not completely lined by mesoderm in past these organisms were
signify the term in details - pseudocoeloma body cavity that isnt completely lined by mesoderm mesoderm is associated with only the ectodermal
express the term in brief - protonephridiaan osmoregulatory-excretory structure found in some invertebrates also known as a flamecell this tubule is
explain prosoma in detailsfirst tagma of a cheliciform consisting of the first six segments of the body appendages on the prosoma are involved in
what is the significance of pronephricthe first or ancestral kidney that appears in the anterior part of the coelomic cavity and is connected to the
what is the meaning of prohaptorthe specialized attachment sucker which surrounds the mouth in monogenean flukes it comrpise adhesive structures