Competitive Exams: Zoology MCQs (Practice_Test 2 of 112)

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  1. The cyst of Entamoeba histolytica on entering the human small intestine divides into eight small amoebulae. These are called
    1. metacysts
    2. metacystic trophozoites
    3. trophozoites
    4. procysts
  2. The choanocytes in asconoid sponge are present in
    1. incurrent canal
    2. excurrent canal
    3. atrium
    4. radial canal
  3. Match List I (Sub-class) with List II (Example) and select the correct answer:
    List-IList-II
    1. Calcaronea
    2. Hexasterophora
    3. Tetractinomorpha
    4. Ceractinomorpha
    1. Sycon
    2. Spongilla
    3. Cliona
    4. Euplectella
    • A
    • B
    • C
    • D
      • 1
      • 4
      • 2
      • 3
      • 1
      • 2
      • 3
      • 4
      • 1
      • 4
      • 3
      • 2
      • 2
      • 1
      • 3
      • 4
  4. In which one of the following Cnidarians is only one ventral siphonoglyph present?
    1. Alcyonaria
    2. Hexacorallia
    3. Hydrozoa
    4. Scyphozoa
  5. In the life cycle of the members of the class Digenea, the correct sequence of larval multiplication is
    1. Miracidium-metacercaria-sporocyst with rediae-rediae with cercariae-cercariae
    2. Sporocyst with rediae-cercariae-rediae with cercariae-metacercaria-miracidium
    3. Miracidium-sporocyst with rediae-rediae with cercariae-cercariae-metacercaria
    4. Metacercaria-cercariae-rediae with cercariae-sporocyst with rediae-miracidium
  6. A Cestode, which does not require an intermediate host is
    1. Diphyllobothrium latum
    2. Moniezia expansa
    3. Hymenolepis nana
    4. Taenia saginata
  7. Consider the following pairs of Aschelminthes groups and examples:
      • Gastrotricha
      • Chaetonotus
      • Kinorhyncha
      • Gordius
      • Rotifera
      • Brachionus
      • Nematomorpha
      • Echinoderes

    Which of these pairs are NOT correctly matched?

    1. 2 and 4
    2. 2 and 3
    3. 1 and 4
    4. 1 and 3
  8. Extra-intestinal migration is characteristic of the life history of
    1. liver-fluke
    2. intestinal round-worm
    3. malarial parasite
    4. tapeworm
  9. Which one of the following pigments occurs in the blood of crustaceans?
    1. Hemoglobin
    2. Hemocyanin
    3. Hemerythrin
    4. Chlorocruorin
  10. Ecdysone, the moulting hormone in insects is liberated from
    1. Corpora carliaca
    2. Prothoracic gland
    3. Corpora allata
    4. X-organ
  11. In which one of the following groups is the earliest known larve invariably a metanauplius?
    1. Copepoda
    2. Ostracoda
    3. Cephalocarida
    4. Branchiopoda
  12. Single pair of well-developed adductor muscle and byssus gland are present in
    1. Lamellidens
    2. Mytilus
    3. Unio
    4. Pila
  13. Which one of the following cephalopodan molluscs does NOT have the ink gland?
    1. Sepia
    2. Loligo
    3. Octopus
    4. Nautilus
  14. Which one of the following molluscs does NOT have either an external or an internal shell?
    1. Sepia
    2. Octopus
    3. Aplysia
    4. Doris
  15. In which one of the following classes of Echinodermata does one come across auricularia larva?
    1. Asteroidea
    2. Echinoidea
    3. Holothuroidea
    4. Ophiuroidea

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