Competitive Exams: Zoology MCQs (Practice-Test 87 of 112)

  1. In Amphioxus, the large cavity that surrounds that pharynx and in which the gill slits open is called

    1. Metapleural fold

    2. Coetome

    3. Psuedocoelome

    4. Atrium

  2. Which one of the following is true of Balanoglossus? The development is

    1. Direct with homoplastic cleavage

    2. Direct with meroblastic cleavage

    3. Indirect with homoplastic cleavage

    4. Indirect with meroblastic cleavage

  3. Consider the following statements: A bivalve shell can. Contain

    1. Pallial layer.

    2. Periostracum and prismatic layers.

    3. Nacre or mother of pearl.

      1. 1 and 3 are correct

      2. 2 alone is correct

      3. 2 and 3 are correct

      4. 1 alone is correct

  4. Match List I (structures) with List II (Arising from).

    List-I List-II
    1. Zygosphere

    2. Zygantira

    3. Parapophysis

    1. Neural arch

    2. Centrum

    3. Basapophysis

    • A
    • B
    • C
    • D
      • 1
      • 1
      • 2
      • 2
      • 2
      • 2
      • 1
      • 1
      • 1
      • 1
      • 1
      • 2
      • 2
      • 1
      • 2
      • 1
  5. Elongation or a bone ceases when the

    1. Primarv and secondary centers of ossification unite with each other

    2. Bony collar formed by periosteum becomes fully ossified

    3. Epiphyseal ossification centers become fully ossified

    4. Epiphyseal plates stop growing and become ossified

  6. In their development, the placoid scales of shark resemble

    1. Mammalian tooth

    2. Mammalian skin

    3. Mammalian nail

    4. Reptilian scale

  7. The types of skulls present in living forms of reptiles include

    1. Anapsid and parapsid

    2. Anapsid and euryapsid

    3. Anapsid and diapsid

    4. Diapsid and synapsid

  8. In mammals, caecum Is located

    1. At the junction of small intestine and large intestine

    2. At the junction of descending part of colon and rectum

    3. At the junction of small intestine and rectum

    4. In between the ascending and descending parts of colon

  9. Birds can make sudden and swiff changes in the direction of their flight while flying. The mechanism responsible for this is:

    1. High degree of activation of flight muscles

    2. Non-expansion of thorax due to poor development of lungs

    3. Shunting of air into specific air sacs by opening and or! closing of the secondary and recurrent bronchi

    4. Lack of body fluids in the pleural, pericardial and peritoneal cavities

  10. The arterial system of vertebrates is derived front a fundamental plan consisting of six pairs of aortic arches. Out of these, the pulmonary aortic of land vertebrates develop from the

    1. Fourth pair

    2. Fifth pair

    3. Sixth pair

    4. Third pair

  11. Renal portal system is ABSEBT in:

    1. Frogs and toads

    2. Rabbits

    3. Frogs, toads and Calotes

    4. Rabbits and Calotes

  12. Match List-I with List-II and select the correct answer

    List-I List-II
    1. Frog

    2. Dog

    3. Ostrich

    4. Crocodile

    1. Sinus venosus

    2. Left aortic arch

    3. Foramen of Panizzae

    4. Right aortic arch

    • A
    • B
    • C
    • D
      • 2
      • 1
      • 4
      • 3
      • 1
      • 2
      • 4
      • 3
      • 1
      • 2
      • 3
      • 4
      • 2
      • 1
      • 3
      • 4
  13. Consider the following statements regarding corpus luteum and corpus alb cans associated with the ovary in mammals

    1. Corpus luteum produces hormones for the ovulation.

    2. Corpus luteum produces hormone which is essential for the preparation of reproductive tract for pregency and in many mammals for the maintenance of pregnancy.

    3. Following the degeneration of corpus luteum all that remains Is a whitish scarlike produces hormones for ovulation.

      1. 1 and 3 are correct

      2. 2 Sand 3 are correct

      3. 2 and 4 are correct

      4. 3 and 4 are correct

  14. Match List-I (Organs) with List-II (Location).

    List-I List-II
    1. Cell body

    2. Filum terminale

    3. Third ventricle

    4. Bidder's ganglion

    1. Diencephalon

    2. Neuron

    3. Inter-auricular septum

    4. Urostyle

    • A
    • B
    • C
    • D
      • 4
      • 2
      • 3
      • 1
      • 4
      • 2
      • 1
      • 3
      • 2
      • 4
      • 1
      • 3
      • 2
      • 4
      • 3
      • 1
  15. Which one of the following parts are associated with the ear?

    1. Fenestra ovalis.

    2. Scala vestibuli.

    3. Organ of Corti.

    4. Organ of Jacobson.

    5. Conus papillaris

    6. Basilar membrane

      1. 1, 2, 3, 4 and 6

      2. 3, 4, 5 and 6

      3. 1, 3 and 6

      4. 1, 2 and 5