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Eleventh Grade (Grade 11) Zoology Questions

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Grade 11 Zoology
Which specific structures do cnidarians use for paralyzing their prey?
  1. cnidocils
  2. cnidocytes
  3. nematocysts
  4. ocelli
Grade 11 Zoology
Osteichthyes is commonly referred to as the
  1. jawless fishes.
  2. cartilaginous fishes.
  3. bony fishes.
  4. funny fishes.
Grade 11 Zoology
Which group of cnidarians has a polyp stage that is most prominent?
  1. class Hydrozoa
  2. class Scyphozoa
  3. class Anthozoa
  4. class Cubozoa
Grade 11 Zoology
Why do animals with exoskeletons need to undergo periodic molting?
  1. Large amounts of food are needed to support the growth of the exoskeleton.
  2. The exoskeleton prevents animals from moving freely in the environment.
  3. The animal is growing inside of the exoskeleton, which does not grow along with it.
  4. The exoskeleton is a major attraction for predators.
Grade 11 Zoology
Which animal depends on the availability of water for breeding?
  1. goannas
  2. seagulls
  3. cane toads
  4. crocodiles
Grade 11 Zoology
What is the main difference between amphibians and reptiles?
  1. Amphibian eggs can survive out of water, while reptile eggs cannot.
  2. Amphibians breathe using lungs, while reptiles breathe using gills.
  3. Amphibians can give live birth, while reptiles can only lay eggs.
  4. Amphibians have a permeable skin, while reptiles have thick skin.
Grade 11 Zoology
Marine fishes provide no parental care to their babies, but the species still survive, mostly because
  1. the baby fishes are toxic and thus do not have many predators.
  2. they reproduce their babies in huge numbers so as to overwhelm the predators.
  3. they make babies in dark places that are invisible to the predators.
  4. the baby fishes are too tiny to be seen by predators.
Grade 11 Zoology
What is the main function of the pores of sponges?
  1. secrete toxins to resist predators
  2. take away extra heat
  3. acquire food from the water
  4. conduct photosynthesis
Grade 11 Zoology
Which statement about marsupial mammals is true?
  1. They are the only egg-laying mammals.
  2. Their offspring finish development within a special pouch.
  3. Their mammary glands have no nipples.
  4. They are found only in Australia.
Grade 11 Zoology
Echinoderm adults show what type of symmetry?
  1. bilateral
  2. radial symmetry
  3. both a and b
  4. asymmetry
Grade 11 Zoology
Which statement regarding fishes is correct?
  1. Because bony fishes have evolved they have fully developed gills at the beginning of life.
  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 in Osteichthyes.
Grade 11 Zoology
Saltwater fish do not need to drink.
  1. True
  2. False
Grade 11 Zoology
Which is not a source of water for the tarrawarra?
  1. food
  2. metabolic water
  3. free water
  4. concentrated urine
Grade 11 Zoology
Which statement is the method by which cnidarians are able to digest their food?
  1. Cnidarians have a complete digestive system with two openings.
  2. Cnidarians absorb their food across their body wall into a primitive gut cavity.
  3. Cnidarians use their tentacles to break down the captured prey before it is taken into the body through the mouth.
  4. Cnidarians only have one opening for digestion, located on the aboral side of the animal.
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