biramous वाक्य

Features distinguishing lophogastrids from the mysids include the absence of statocysts in their uropods, and the presence of well-developed biramous pleopods on their abdomens.
Like " C . ovata " it had biramous undifferentiated appendages, but it also had only five abdominal somites like " W . fieldensis ".
In most taxa, each abdominal segment except the last carries a pair of biramous pleopods used for swimming, burrowing, gas exchange, creating a current or brooding eggs.
At the end of the pleon is the "'tail fan "', comprising a pair of biramous uropods and the telson, which bears the anus.
These flaps are homologous to the endopod of the biramous limbs of many arthropods, and dorsal to them were a second set of flaps which bore gills and are homologous to the exopod.

It is unknown if these limbs are biramous, but they are assumed to be the endopodites, the inner branches ( ramus ) of the leg, with the exopodites, or outer branches, absent or not preserved.
It had a tubular body with at least 45 pairs of biramous limbs, and its tail had three fins two horizontal, one vertical which were used to stabilise the animal as it swam on its back.
The abdomen has five segments called " pleonites " each with a pair of biramous " pleopods "; these are modified into swimming legs and " rami ", flat respiratory structures acting as gills.
The common ancestor of all arthropods likely had one pair of uniramous ( unbranched ) antenna-like structures, followed by one or more pairs of biramous ( having two major branches ) leg-like structures, as seen in some modern crustaceans and fossil trilobites.
Since the first description of " Thysanopode tricuspide " by Henri Milne-Edwards in 1830, the similarity of their biramous thoracopods had led zoologists to group euphausiids and Mysidacea in the order Schizopoda, which was split by Johan Erik Vesti Boas in 1883 into two separate orders.