Aquatics CDE Test Bank - Pa FFA

94. The term used to describe the knobby protrusions on a fish‟s head sometimesknown as pearl organs is properly referred to as a:a. Hornb. Otolithc. Tubercled. Pharyngeal arches95. When you test for the degree of clarity or opaqueness of water usually resultingfrom sediment after a rainstorm you are testing the _______________ of thewater.a. Turbidityb. Cloudinessc. Clarity quotientd. Mudification96. The proper name for the tail of a fish is the ________________.a. Operculumb. Axillary finc. Caudal find. Lamellae97. The hooked jaw, comprised of cartilage, which is acquired by mature male troutand salmon especially at spawning time is called the ______________.a. Pelagic hookb. Maxillary areac. Kyped. Snout98. A species of fish that feeds more readily during the day than at night is said to bea __________________ feeder.a. Extirpatedb. Diurnalc. Nocturnald. Voracious99. A problem where an excess of organic material builds up at the bottom of a bodyof water, decomposing and increasing nutrient levels while decreasing dissolvedoxygen is calleda. Nitrogen fixingb. Nitrificationc. Eutrophicationd. Phospo-nitrolosis