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LNMU Part 1 Zoology Objective Question 2023 (Sub./Gen)

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LNMU is going to conduct the LNMU Part 1 Exam 2023. In this post we have shared LNMU Part 1 Zoology Objective Question 2023 (Sub./Gen)

The answer to the objective question is bold in the options.

  1. Invertebrate animals are devoid of which of the following?
    • Nerve cord
    • Enzyme
    • Spine
    • None of the above
  2. Single out a diploblastic invertebrate animal :
    • Euglena
    • Obelia
    • Pila
    • Hyla
  3. Which of the following is not the locomotory organ of protozoa?
    • Lobopodia
    • Reticulopodia
    • Parapodia
    • None of the above
  4. Digestion insponges is :
    • Extracellular
    • Intracellular
    • Extracellular preceded by Intracellular
    • None of the above
  5. Which canal in the body wall of sycon is flagellated ?
    • In current canal
    • Radical canal
    • Excurrent canal
    • None of these
  6. Tentacles of obelia are
    • Hollow with nematocyst
    • Solid with nematocyst
    • Hollow without nematocyst
    • Solid without nematocyst
  7. Single out larva met with in the life cycle of Aurelia
    • Auricularia
    • Ephyra
    • Bipinnaria
    • None of the above
  8. Hydranth possessed by dimorphic obelia is
    • Non-nutritive and reproducative
    • Nutritive and reproductive
    • Nutritive and protecctive
    • None of these
  9. Moonga stone is also known as:
    • Green coral
    • Red coral
    • Blue coral
    • None of the above
  10. Sedentary sea anemone is an animal of which class of phylum coelenterata ?
    • Hydrozoa
    • Parazoa
    • Scyphozoa
    • Anthozoa
  11. Locomotor organ of a ctenophore animal is :
    • Hastate plate
    • Fish plate
    • Comb plate
    • None of the above
  12. Which one of the following is not a ctenophore animal ?
    • Hormiphora
    • Beroe
    • Pleurobrachia
    • Crab
  13. Majority of animals of phylum Platyhelminthes are:
    • Ectoparasite
    • Free living
    • Endoparasite
    • Commensal
  14. Which one of the following is tailed larva of Fasciola?
    • Miracidium
    • Sporocyst
    • Cercaria
    • Meteacercaria
  15. Excretory pore situted at the posterior end of fasciola releases:
    • Faecal substance
    • Nitrogenous waste
    • Gamete
    • None of the above
  16. Secondary host of fasciola is :
    • Lymnaea
    • Herdmania
    • Neopilina
    • None of the above
  17. Tape worm larva with six chitinous hooks is also known as:
    • Cysticercus
    • Hexacanth
    • Miracidium
    • Amphilblastula
  18. Body segment of Taenia with eggs is called :
    • Immature proglottid
    • Mature Proglottid
    • Gravid proglottid
    • None of the above
  19. Contaminative inflection of taenia is caused by intake of :
    • Chick egg
    • Goat meat
    • Measly pork
    • None of the above
  20. Major longitudinal channel of leech constituting Haemocoelomic system is:
    • Dorsal channel
    • Ventral channel
    • Lateral channel
    • All of the above
  21. What is incorrect about haemocoelomic system
    • It is not a true blood vascular system
    • It is constituted by coelomic Space
    • It is constitued by coelomic fluid
    • It possesses venous heart
  22. Earthworm possesses which type of nephridia for excretion of nitrogenous wastes ?
    • Pharyngeal
    • Integumentary
    • Septal
    • All of the above
  23. Single out exonephric nephridia found in Earthworm :
    • Pharyngeal
    • Integumentary
    • Septal
    • All of the above
  24. Total number of segmentally arranged nephridia in Leech is :
    • Ten Pairs
    • Twelve Pairs
    • Seventeen pairs
    • Nineteen pairs
  25. Earthworm and leeches are:
    • Ammonotelic
    • Ureotelic
    • Uricotelic
    • None of the above
  26. Torsion in Pila results in:
    • Retention of larval bilateral symmetry
    • Retention of larval radial symmetry
    • Loss of larval bilateral symmetry
    • None of these
  27. Detorsion is the embryonic process met with in gasteroped molluscs which shows :
    • Extension of torsion
    • Partial or complete reversal of torsion
    • No connection with toursion
    • None if the above
  28. What is incorrect about torsion in gastropods ?
    • Its occurs during larval development
    • Its causes rotation of visceral mass, mantle and shell by 1800 in respect of head and foot
    • It does not change larval symmetry
    • It does not change larval symmetry
    • It is gene-regulated
  29. Example of detorision are:
    • Aplysia
    • Doris
    • Eolis
    • All of the above
  30. Shell of Snail is:
    • Coiled
    • Flat
    • Tubular
    • None of the above
  31. Worm-like peripatus is regarded as connecting link between which of the following ?
    • Platyhelminthes and Aschelminthes
    • Annelida and Arthropoda
    • Arthropoda and Mollusca
    • Echinodermata and hemichordata
  32. Dioecious peripatus shows :
    • External fertilization
    • Internal fertilization
    • Parthenogenesis
    • None of the above
  33. Absence of definite external segmentation is the characteristics of which of the following ?
    • Octopus
    • Mytilus
    • Peripatus
    • Balanoglossus
  34. Gills of prawn are:
    • Podobranch
    • Arthrobranch
    • Pleurobranch
    • All of the above
  35. Gill chambers of prawn are closed from :
    • Ventral side
    • Dorsal side
    • Front side
    • None of the above
  36. Which of the following channels carries oxygenated blood into pericardium of prawn?
    • Median longitudinal channel
    • Marginal channel
    • Efferent branchial channel
    • None of these
  37. Which of the following mouth parts is capable of mastication of food ?
    • Sponging
    • Piercing and sucking
    • Siphoning
    • Biting and chewing
  38. In Prawn which of the following mouth parts bears teeth?
    • Labrum
    • Labium
    • Mandible
    • Hypopharynx
  39. What is inncorect about extinct trilobita group ?
    • All marine
    • Presence of three body lobes
    • Presence of hard exoskeleton
    • All freshwater
  40. Locomotor organs of starfish are:
    • Setae
    • Chaetae
    • Tube feet
    • Jointed legs
  41. Which of thefollowing canals of water vascular system in echinoderms contains calcareous deposits ?
    • Ring canal
    • Stone canal
    • Radial canal
    • Lateral canal
  42. Which larva is not formed in class Asteroidea of phylum Echinodermata ?
    • Bipinnaria
    • Auricularia
    • Branchiolaria
    • Ophiopluteus
  43. Echinoderm larvae are :
    • Bilaterally symmetrical
    • Ciliated
    • Free swimming
    • All of these
  44. Free swimming echinoderm larva wih apical tuft is formed in which of the following classes?
    • Asteroidea
    • Ophiuroidea
    • Holothuroidea
    • Crinoidea
  45. Which of the following is not correct about origion of chordates?
    • Evolved in seas
    • Evolved around 550 million years ago
    • Evolved from fishes
    • Evolved from protostornous anecestor
  46. Unlike Herdmania larva, its adult is :
    • Sedentary
    • Tailless
    • Inactive
    • All of the above
  47. Larva of Herdmania showing retrogressive metamorphosis possesses :
    • Notochord
    • Nervecord
    • Tail with tail fin
    • All of the above
  48. Marine amphioxus performs filter feeding with the help of which of the following ?
    • Pharynx
    • Wheel organ
    • Gill
    • All of the above
  49. Amphioxus discharges faecal matter into surrounding water through which of the following?
    • Mouth
    • Atriopore
    • Anus
    • None of the above
  50. Venous heart of scoliodon circulates which type of blood?
    • Oxygenated blood
    • Deoxygenated blood
    • Mixed blood
    • None of the above
  51. Blood purification in scoliodon takes place in which of the following parts ?
    • Skin
    • Gill
    • Heart
    • None of the above
  52. Number of afferent branchial vessels in scoliodon is :
    • Three pairs
    • Four pairs
    • Five pairs
    • None of the above
  53. During respiration in labeo, deoxygenated into surrounding medium through which of the following ?
    • Mouth
    • Anus
    • Gill slits
    • All of the above
  54. Respiratory pigment found in the blood of labeo is :
    • Haemocyanin
    • Erythrocruonin
    • Haemoglobin
    • None of the above
  55. Heart of labeo is :
    • Two chambered
    • Three chambered
    • Incompletely four chambered
    • Completely four chambered
  56. Probable ancestors of amphibian vertebrates are :
    • Lung fishes
    • Armoured fishes
    • Crossopterygian fishes
    • None of the above
  57. Which of the following ambhibian genus bears eggs on its back for parental care ?
    • Rana
    • Hyla
    • Amphiuma
    • Alytes
  58. Tick out the correct match from the following :
    • Anura-Frog
    • Caudata- Lchthyophis
    • Gymnophoina – Salamander
    • Labyrinthodontia – Hyla
  59. Which of the following amphibian genusits eggs during embryonic development for parental care?
    • Ichthyophis
    • Frog
    • Toad
    • None of the above
  60. Which of the following larva shows neoteny ?
    • Axolotl larva of Ambystoma
    • Ammocoete larva of Lamprey
    • Tadpole larva of frog
    • None of the above
  61. Dorsal bony cover of gutle is called :
    • Carapace
    • Plastron
    • Hastate
    • None of the above
  62. Carapace and plastron of turtle are laterally joined by which of the following ?
    • Membrane
    • Muscles band
    • Bony bridge
    • None of the above
  63. Poison glands of snakes are modification of which of the following glands ?
    • Slime gland
    • Salivary gland
    • Byssus gland
    • None of the above
  64. Single out poisonous sea snake :
    • Natrix
    • Hydrophis
    • Python
    • None of the above
  65. What is true about krait ?
    • Non-poisonous and with single row of hexagonal scales
    • Poisonous and with double row of hexagonal scales
    • Non-Poisonous and with double row of hexagonal scales
    • Poisonous and with single row of hexagonal scales
  66. Whatis inncorrect about dhamana ?
    • Limblless and headless snake
    • Known as rat snake
    • Rapid crawler
    • Poisonous snake
  67. What is correct about python ?
    • Largest species of snake
    • Non-poisonous
    • Arboreal habit
    • All of the above
  68. During snake bitting position of fangs changes from :
    • Vertical to horizontal
    • Anterior to posterior
    • Horizontal to verticle
    • Posterior to anterior
  69. Which of the following has role in snake bitting ?
    • Poison glands
    • Poison teeth
    • Skull bones
    • All of the above
  70. Birds evolved from which of the following ?
    • Fishes
    • Amphibians
    • Reptiles
    • Mammals
  71. Single out flight adaptation in birds
    • Wings
    • Feathers
    • Air sacs
    • All of the above
  72. Hollow bones of birds are called:
    • Lentic
    • Lotic
    • Pneumatic
    • Phonetic
  73. Migration in birds is essentially :
    • Hereditary
    • Two-way Journey
    • Beneficial
    • All of the above
  74. Rat bears teeth on:
    • Upper jaws
    • Lower jaws
    • Both upper and lower jaws
    • None of the above
  75. In heart of frog right auricle and sinus venosus is connected through which of the following?
    • Auriculo-ventricular aperture
    • Foramen magnum
    • Sinu-auricular aperture
    • None of the above

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LNMU Part 1 Zoology Objective Question 2023 (Sub./Gen)

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