After exiting their nauplius (“now-PLEE-us”) larval stage, these animals temporarily develop glandular antennae during their cypris post-larval stage. For 10 points each:
[10m] Name these animals that sweep for food using feather-like filtering appendages. These animals, which have the largest penis-to-body size ratios, attach to surfaces using a cement-like secretion.
ANSWER: barnacles [or Cirripedia; or cirripedes; prompt on arthropods or Arthropoda; prompt on crustaceans]
[10h] Like barnacles, these structurally simplest crustaceans start their development as nauplius larvae. Alongside krill, these crustaceans, which have a calanoid order, comprise nearly all zooplankton biomass.
ANSWER: copepods [or Copepoda]
[10e] In nauplius larvae, an unpaired one of these organs can be found on one of their head segments. In Drosophila, the color of these organs, which can appear red or white, is controlled by sex linkage.
ANSWER: eyes [accept naupliar eyes; accept compound eyes; accept ocellus or ocelli or simple eyes]
<Kane Nguyen, Biology>