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abdominal appendage造句

"abdominal appendage"是什么意思   

例句与造句

  1. These species have small abdominal appendages, but robust legs well adapted for walking.
  2. Female crabs generally carry their eggs attached to the abdominal appendages until they hatch.
  3. However, apterygotes ( bristletails and silverfish ) and many immature aquatic insects have abdominal appendages.
  4. In this stage, the pleopods ( swimmerets; abdominal appendages ) become functional, and the animal closely resembles the adult form.
  5. These vesicles are derived from the coxal and trochanteral endites ( inner annulated lobes ) of the ancestral abdominal appendages.
  6. It's difficult to find abdominal appendage in a sentence. 用abdominal appendage造句挺难的
  7. The abdominal appendages of modern chelicerates are missing or heavily modified while those of horseshoe crabs ( Xiphosura ) form gills.
  8. However, since crabs use the first two pairs of pleopods ( abdominal appendages ) for sperm transfer, this arrangement has changed.
  9. The eggs can sometimes be seen attached to the hairs on the second abdominal appendage of the female crab alongside her own eggs.
  10. One reason for this could be that the modification of the abdominal appendages into male copulation organs emerged later than the evolution of flight.
  11. The caterpillar has two abdominal appendages which serve as triggers to initiate a backward motion by which it grasps prey insects using spiny pair of forelegs.
  12. Modern Archaeognatha and Thysanura still have rudimentary appendages on their abdomen called styli, while more primitive and extinct insects known as Monura had much more developed abdominal appendages.
  13. It looks like abdominal appendages modified for sperm transfer and direct insemination have occurred at least twice in insect evolution, once in Odonata and once in the other flying insects.
  14. Another scenario is that abdominal appendages adapted for direct insemination have evolved three times in insects; once Odonata, once in mayflies and once in the Neoptera, both mayflies and Neoptera choosing the same solution.

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