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Eleventh Grade (Grade 11) Zoology Questions

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Grade 11 Zoology
Grade 11 Zoology
Which statement regarding fishes is correct?
  1. Since bony fishes evolved, they have already developed gills at the beginning.
  2. Bony fishes fertilize externally only.
  3. Hagfish produce a thick mucus as a self-defense mechanism against predators.
  4. In taxonomy, the shark is classified as Osteichthyes.
Grade 11 Zoology
Marine fishes don’t provide parental care to their babies at all, but the species still survive in evolution, mostly because                                                                              .
  1. baby fishes are toxic and thus don't have that many predators
  2. they reproduce their babies in a huge number so as to overwhelm the predators
  3. they make babies in dark places that are invisible to the predators
  4. baby fishes are too tiny to be seen by predators
Grade 11 Zoology
Which marine organism is amphibious?
  1. reptiles
  2. seabirds
  3. fishes
  4. mammals
Grade 11 Zoology
Echinoderms show what type of symmetry?
  1. Bilaterial Symmetry
  2. Radial Symmetry
  3. Both A and B
Grade 11 Zoology
Grade 11 Zoology
Grade 11 Zoology
The key function of bony fish's bladders is to                                                    .
  1. speed their swimming up so as to catch preys
  2. regulate their body temperature to prevent overheat
  3. store fat as backup energy in case of food shortage
  4. help them balance between sinking and floating
Grade 11 Zoology
Osteichthyes is commonly referred to as                     .
  1. jawless fishes
  2. cartilaginous fishes
  3. bony fishes
  4. funny fishes
Grade 11 Zoology
What statement about jawless fishes is correct?
  1. By far there are only one surviving type: lampreys.
  2. None of jawless fishes are parasites
  3. Jawless fishes may feed on dead fish bodies
  4. Lampreys are less developed than hagfish; they lack fully formed skulls
Grade 11 Zoology
In contrary to our common knowledge, the research suggests that sharks are not "living fossils" because                                                                    .
  1. the fossil of their gill structure shows extensive change over time
  2. they are active only in a narrow range worldwide
  3. they grow tens of thousands of teeth over a lifetime
  4. the fossils of shark scales are from about 420 million years ago
Grade 11 Zoology
Which of these characteristics is NOT found in the chordates?
  1. external skeleton
  2. bilateral symmetry
  3. gills slits during development
  4. a notocord
Grade 11 Zoology
What part of jellyfish is able to produce toxins?
  1. mesoglea
  2. tentacles
  3. mouth
  4. gonads
Grade 11 Zoology
Ships and boats in the ocean become more and more important for jellyfish to thrive. One reason for the phenomenon is that                                                            .
  1. jellyfish settle and grow the sperm on them
  2. they bring extra food to jellyfish
  3. they stir up the water to regulate the temperature
  4. they provide shade so that jellyfish doesn't get sun burned
Grade 11 Zoology
What is the main function of the pores of sponges?
  1. Secrete toxins to resist the predators
  2. Take away extra heat
  3. Acquire food from the water
  4. Conduct photosynthesis
Grade 11 Zoology
Which could be a possible reason if corals go extinct?
  1. They lose ability to reproduce asexually
  2. They lose ability to reproduce sexually
  3. They lose ability to reproduce, either asexually or sexually
  4. None above
Grade 11 Zoology
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