Competitive Exams: Zoology MCQs (Practice_Test 101 of 112)

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  1. Which one of the following arrangements is seen in a plasma membrane?
    1. Proteins embedded in lipid bilayer
    2. Lipids embedded in protein bilayer
    3. An outer lipid layer and an inner lipid layer
    4. Alternating protein and lipid layers
  2. The ribosomes are main1yconiposed of
    1. RNA core and lipid envelope
    2. DNA core and lipid envelope
    3. RNA and proteins
    4. DNA and proteins
  3. The end result of a mitotic cell division is
    1. equal distribution of chromatids into two daughter cells
    2. equal distribution of chromosomes into two daughter cells
    3. distribution of homologous chimosomes into two daughter cells
    4. random distribution of two chromatids into two daughter cells
  4. Which one of the following cell types does not divide in adult organisms?
    1. Intestinal epithelium
    2. Primary germ cells
    3. Neurons
    4. Corneal epithelium
  5. DNA synthesis is succeeded by a sequence of events during mitosis. Which one of the following sequences is correct?
    1. G1, G2 and M phase
    2. M phase, G1 and G2
    3. G1, M phase and G2
    4. G2, M phase and G1
  6. Each chromatid of a chromosome contains
    1. a single, linear DNA molecule
    2. two linear DNA molecules
    3. four linear DNA molecules
    4. variable number of linear DNA molecules
  7. The best way to demonstrate whether nuclear DNA is being replicated-in a cell is by
    1. phase-contrast microscopy
    2. thin layer chromatography
    3. gel electrophoresis
    4. autoradiography
  8. Law of independent assessment is NOT applicable in case of
    1. gene segregation
    2. sex-linked inheritance
    3. polyploidy
    4. conjugation.
  9. The insertion or deletion of a single base in a DNA strand is known as
    1. framshift mutation
    2. missense mutation
    3. nonsense mutation
    4. suppressor mutation
  10. The protozoan species Actinophris so/is commonly known as
    1. slipper animalcule
    2. sun animacule
    3. wheel animalcule
    4. homancule
  11. The disease Pyorrhoea is caused by which one of the following protozoan species?
    1. Leishmania donovani
    2. Trypanosoma gambiense
    3. Trichomonas buccalis
    4. Plasmodium vivax
  12. In which one of the following orders does Leishmania sp. Belong?
    1. Trichomonadida
    2. Kinetoplastida
    3. Cryptomonadida
    4. Chrysomonadida
  13. Consider the following statements:
    1. Xenopsylla belongs to the sub-class Pterygota of the class Insecta.
    2. Locomotory organelle of Mastigophora are flagella
    3. Euspongia is common bath sponge.
    4. Coelenterates are pseudocoelomates.

    Which of the above statements is/are correct?

    1. 1 alone
    2. 1 and 2
    3. 1,2 and 3
    4. 2,3 and 4
  14. In which one of the following animals does the same opening function both as the mouth and the anus?
    1. Ascaris
    2. Pheretima
    3. Peripatus
    4. Obelia
  15. Which one of the following features is NOT applicable to all the three helminthes, Taenia, Fasciola and Planar/a?
    1. Triploblastic forms
    2. Absence of metamerism
    3. Parasitism
    4. Absence of definite circulatory and respiratory systems