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.
- Invertebrate animals are devoid of which of the following?
- Nerve cord
- Enzyme
- Spine
- None of the above
- Single out a diploblastic invertebrate animal :
- Euglena
- Obelia
- Pila
- Hyla
- Which of the following is not the locomotory organ of protozoa?
- Lobopodia
- Reticulopodia
- Parapodia
- None of the above
- Digestion insponges is :
- Extracellular
- Intracellular
- Extracellular preceded by Intracellular
- None of the above
- Which canal in the body wall of sycon is flagellated ?
- In current canal
- Radical canal
- Excurrent canal
- None of these
- Tentacles of obelia are
- Hollow with nematocyst
- Solid with nematocyst
- Hollow without nematocyst
- Solid without nematocyst
- Single out larva met with in the life cycle of Aurelia
- Auricularia
- Ephyra
- Bipinnaria
- None of the above
- Hydranth possessed by dimorphic obelia is
- Non-nutritive and reproducative
- Nutritive and reproductive
- Nutritive and protecctive
- None of these
- Moonga stone is also known as:
- Green coral
- Red coral
- Blue coral
- None of the above
- Sedentary sea anemone is an animal of which class of phylum coelenterata ?
- Hydrozoa
- Parazoa
- Scyphozoa
- Anthozoa
- Locomotor organ of a ctenophore animal is :
- Hastate plate
- Fish plate
- Comb plate
- None of the above
- Which one of the following is not a ctenophore animal ?
- Hormiphora
- Beroe
- Pleurobrachia
- Crab
- Majority of animals of phylum Platyhelminthes are:
- Ectoparasite
- Free living
- Endoparasite
- Commensal
- Which one of the following is tailed larva of Fasciola?
- Miracidium
- Sporocyst
- Cercaria
- Meteacercaria
- Excretory pore situted at the posterior end of fasciola releases:
- Faecal substance
- Nitrogenous waste
- Gamete
- None of the above
- Secondary host of fasciola is :
- Lymnaea
- Herdmania
- Neopilina
- None of the above
- Tape worm larva with six chitinous hooks is also known as:
- Cysticercus
- Hexacanth
- Miracidium
- Amphilblastula
- Body segment of Taenia with eggs is called :
- Immature proglottid
- Mature Proglottid
- Gravid proglottid
- None of the above
- Contaminative inflection of taenia is caused by intake of :
- Chick egg
- Goat meat
- Measly pork
- None of the above
- Major longitudinal channel of leech constituting Haemocoelomic system is:
- Dorsal channel
- Ventral channel
- Lateral channel
- All of the above
- 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
- Earthworm possesses which type of nephridia for excretion of nitrogenous wastes ?
- Pharyngeal
- Integumentary
- Septal
- All of the above
- Single out exonephric nephridia found in Earthworm :
- Pharyngeal
- Integumentary
- Septal
- All of the above
- Total number of segmentally arranged nephridia in Leech is :
- Ten Pairs
- Twelve Pairs
- Seventeen pairs
- Nineteen pairs
- Earthworm and leeches are:
- Ammonotelic
- Ureotelic
- Uricotelic
- None of the above
- Torsion in Pila results in:
- Retention of larval bilateral symmetry
- Retention of larval radial symmetry
- Loss of larval bilateral symmetry
- None of these
- 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
- 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
- Example of detorision are:
- Aplysia
- Doris
- Eolis
- All of the above
- Shell of Snail is:
- Coiled
- Flat
- Tubular
- None of the above
- 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
- Dioecious peripatus shows :
- External fertilization
- Internal fertilization
- Parthenogenesis
- None of the above
- Absence of definite external segmentation is the characteristics of which of the following ?
- Octopus
- Mytilus
- Peripatus
- Balanoglossus
- Gills of prawn are:
- Podobranch
- Arthrobranch
- Pleurobranch
- All of the above
- Gill chambers of prawn are closed from :
- Ventral side
- Dorsal side
- Front side
- None of the above
- Which of the following channels carries oxygenated blood into pericardium of prawn?
- Median longitudinal channel
- Marginal channel
- Efferent branchial channel
- None of these
- Which of the following mouth parts is capable of mastication of food ?
- Sponging
- Piercing and sucking
- Siphoning
- Biting and chewing
- In Prawn which of the following mouth parts bears teeth?
- Labrum
- Labium
- Mandible
- Hypopharynx
- What is inncorect about extinct trilobita group ?
- All marine
- Presence of three body lobes
- Presence of hard exoskeleton
- All freshwater
- Locomotor organs of starfish are:
- Setae
- Chaetae
- Tube feet
- Jointed legs
- Which of thefollowing canals of water vascular system in echinoderms contains calcareous deposits ?
- Ring canal
- Stone canal
- Radial canal
- Lateral canal
- Which larva is not formed in class Asteroidea of phylum Echinodermata ?
- Bipinnaria
- Auricularia
- Branchiolaria
- Ophiopluteus
- Echinoderm larvae are :
- Bilaterally symmetrical
- Ciliated
- Free swimming
- All of these
- Free swimming echinoderm larva wih apical tuft is formed in which of the following classes?
- Asteroidea
- Ophiuroidea
- Holothuroidea
- Crinoidea
- 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
- Unlike Herdmania larva, its adult is :
- Sedentary
- Tailless
- Inactive
- All of the above
- Larva of Herdmania showing retrogressive metamorphosis possesses :
- Notochord
- Nervecord
- Tail with tail fin
- All of the above
- Marine amphioxus performs filter feeding with the help of which of the following ?
- Pharynx
- Wheel organ
- Gill
- All of the above
- Amphioxus discharges faecal matter into surrounding water through which of the following?
- Mouth
- Atriopore
- Anus
- None of the above
- Venous heart of scoliodon circulates which type of blood?
- Oxygenated blood
- Deoxygenated blood
- Mixed blood
- None of the above
- Blood purification in scoliodon takes place in which of the following parts ?
- Skin
- Gill
- Heart
- None of the above
- Number of afferent branchial vessels in scoliodon is :
- Three pairs
- Four pairs
- Five pairs
- None of the above
- During respiration in labeo, deoxygenated into surrounding medium through which of the following ?
- Mouth
- Anus
- Gill slits
- All of the above
- Respiratory pigment found in the blood of labeo is :
- Haemocyanin
- Erythrocruonin
- Haemoglobin
- None of the above
- Heart of labeo is :
- Two chambered
- Three chambered
- Incompletely four chambered
- Completely four chambered
- Probable ancestors of amphibian vertebrates are :
- Lung fishes
- Armoured fishes
- Crossopterygian fishes
- None of the above
- Which of the following ambhibian genus bears eggs on its back for parental care ?
- Rana
- Hyla
- Amphiuma
- Alytes
- Tick out the correct match from the following :
- Anura-Frog
- Caudata- Lchthyophis
- Gymnophoina – Salamander
- Labyrinthodontia – Hyla
- Which of the following amphibian genusits eggs during embryonic development for parental care?
- Ichthyophis
- Frog
- Toad
- None of the above
- Which of the following larva shows neoteny ?
- Axolotl larva of Ambystoma
- Ammocoete larva of Lamprey
- Tadpole larva of frog
- None of the above
- Dorsal bony cover of gutle is called :
- Carapace
- Plastron
- Hastate
- None of the above
- Carapace and plastron of turtle are laterally joined by which of the following ?
- Membrane
- Muscles band
- Bony bridge
- None of the above
- Poison glands of snakes are modification of which of the following glands ?
- Slime gland
- Salivary gland
- Byssus gland
- None of the above
- Single out poisonous sea snake :
- Natrix
- Hydrophis
- Python
- None of the above
- 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
- Whatis inncorrect about dhamana ?
- Limblless and headless snake
- Known as rat snake
- Rapid crawler
- Poisonous snake
- What is correct about python ?
- Largest species of snake
- Non-poisonous
- Arboreal habit
- All of the above
- During snake bitting position of fangs changes from :
- Vertical to horizontal
- Anterior to posterior
- Horizontal to verticle
- Posterior to anterior
- Which of the following has role in snake bitting ?
- Poison glands
- Poison teeth
- Skull bones
- All of the above
- Birds evolved from which of the following ?
- Fishes
- Amphibians
- Reptiles
- Mammals
- Single out flight adaptation in birds
- Wings
- Feathers
- Air sacs
- All of the above
- Hollow bones of birds are called:
- Lentic
- Lotic
- Pneumatic
- Phonetic
- Migration in birds is essentially :
- Hereditary
- Two-way Journey
- Beneficial
- All of the above
- Rat bears teeth on:
- Upper jaws
- Lower jaws
- Both upper and lower jaws
- None of the above
- 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
Important Links
LNMU Part 1 Zoology Objective Question 2023 (Sub./Gen)