Zoology McQ's with correct answers

 

Zoology MCQs

(1) Insects are characterized by:
(a) 3 pairs of legs
(b) Two pairs of antennae
(c) Wings on body
(d) Large sized eggs
(e) None of these

(a) 3 pairs of legs

(2) Body is metamorically segmented in:
(a) Porifera
(b) Annelida
(c) Coelentrata
(d) None of these

(b) Annelida

(3) Which of the following arthropod are totally aquatic?
(a) Crustaceans
(b) Insects
(c) Milipedes
(d) None of these

(d) None of these

(4) Dorsal tubular nerve cord is characteristic of:
(a) Some chordates
(b) Some non chordates
(c) All non chordates
(d) All chordates
(e) None of these

(d) All chordates

(5) Opposable thumbs are characteristic feature of:
(a) Lagomorpha
(b) Primates
(c) Edentata
(d) None of these

(b) Primates

(6) Differences in the scales of fishes and reptiles lies in their being:
(a) Endodermal and dry
(b) Epidermal and dry
(c) Epidermal and wet
(d) Endodermal and wet
(e) None of these

(b) Epidermal and dry

(7) Which of the following has oxygenated blood?
(a) Renal veins
(b) Pulmonary veins
(c) Pulmonary artery 
(d) Hepatic portal veins
(e) None of these

(b) Pulmonary veins

(8) Scapula is the bone of:
(a) Skull
(b) Pelvic girdle
(c) Pectoral girdle
(d) Vertebral column
(e) None of these

(c) Pectoral girdle

(9) All the digestive are formed in vertebrates by:
(a) Ectoderm only
(b) Endoderm only
(c) Mesoderm only
(d) None of these

(b) Endoderm only

(10) Ammonia is chief excretory product in
(a) Reptiles
(b) Turtles
(c) Mammals
(d) Fish
(e) None of these

(d) Fish

(1) Life originated during:
(a) Pre-cambrian period
(b) Mesozoic era
(c) Coenozoic era.
(d) Proterozoic era
(e) None of these

(a) Pre-cambrian period

(2) Pancreas secrete:
(a) Pepsin
(b) Only hormones
(c) Only enzymes
(d) Both (a) and (b)
(e) None of these

(e) None of these

(3) Louis Pasture is known for:
(a) Germ theory of disease
(b) Germ plasm theory 
(c) Mutation theory 
(d) Cell theory 
(e) None of these

(a) Germ theory of disease

(4) Life originated:
(a) In air 
(b) On land
(c) In water
(d) In all (a), (b) and (c)
(e) None of these

(c) In water

(5) Virus are:
(a) Unicellular
(b) Acellular
(c) Multicellular
(d) Free living
(e) None of these

(e) None of these

(6) Wings of insects and bats are examples of:
(a) Homologous organs
(b) Analogous organs
(c) Both (a) and (b)
(d) Vestigial organs
(e) None of these

(b) Analogous organs

(7) Archeopteryx is a connecting link between:
(a) Amphibians and reptiles
(b) Reptiles and birds
(c) Birds and mammals
(d) Amphibians and birds
(e) None of these

(b) Reptiles and birds

(8) Lamarck’s theory of Evolution is based upon:
(a) Effect of environment 
(b) Use and disuse of body parts
(c) Inheritance of Acquired characters
(d) All of these
(e) None of these

(d) All of these

(9) Absorption of digested food occurs mainly in:
(a) Colon 
(b) Small intestine
(c) Large intestine
(d) Stomach
(e) None of these

(b) Small intestine

(10) A renal portal system is found in:
(a) Man
(b) Horse
(c) Rabbit
(d) Frog
(e) None of these

(d) Frog

(11) Tangoreceptors respond to:
(a) Heat
(b) Smell
(c) Chemicals
(d) Touch
(e) None of these

(d) Touch

(12) Third ventricle is found in:
(a) Brain of Rabbit 
(b) Heart of Rabbit 
(c) Kidney of Frog
(d) Heart of Frog
(e) None of these

(a) Brain of Rabbit 

(13) Blood from glomerulus returns by:
(a) Afferent renal arteriole 
(b) Efferent renal arteriole
(c) Both of these
(d) Renal vein
(e) None of these

(b) Efferent renal arteriole

(14) Vital morphological and Physiological units of Mammalian Kidney are: 
(a) Ureters
(b) Seminiferous tubules
(c) Uriniferous tubules
(d) All of these
(e) None of these

(c) Uriniferous tubules

(15) Which of the following secretes Oxytocin:
(a) Adrenals
(b) Pituitary
(c) Thyroid
(d) Ovaries 
(e) None of these

(b) Pituitary

(16) Longest cells in animals are:
(a) Nerve cells
(b) Egg cells
(c) Kidney cells
(d) Liver cells
(e) None of these

(a) Nerve cells

(17) Function of centromere is to:
(a) Initiate cell division
(b) Inhibit cell division
(c) Provide site for cell division
(d) Do all of these
(e) None of these

(c) Provide site for cell division

(18) Which of the following has extranuclear DNA:
(a) Mitochondria
(b) Lysosomes
(c) Golgi complex
(d) All of these
(e) None of these

(a) Mitochondria

(19) Who gave laws of segregation and Dominance?
(a) Mendel 
(b) Morgan
(c) Darwin
(d) Muller
(e) None of these

(a) Mendel 

(20) Adrenal glands are found in close association with:
(a) Testes 
(b) Spleen
(c) Liver
(d) Ovaries
(e) None of these

(e) None of these 

(1) The mode of nutrition in AMOEBA is:
(a) Holozoic
(b) Saprozoic
(c) Saprophytic
(d) None of these

(a) Holozoic

(2) The coelom in PLATYHELMINTHYES is:
(a) Pseudocoele
(b) Haemocoele
(c) Metacoele
(d) None of these

(a) Pseudocoele

(3) EXCRETORY organs in earthworms are:
(a) Nephron
(b) Flame cells
(c) Malpighian Tubules
(d) Nephridia
(e) None of these

(d) Nephridia

(4) Foot is used as an organ of locomotion in which of the following animals?
(a) Freshwater mussel
(b) Octupus
(c) Sepia
(d) None of these

(a) Freshwater mussel

(5) Which group of animals out of the following is DIPLOBLASTIC?
(a) Platyhelminthes
(b) Echinodermata
(c) Coelenterata
(d) None of these

(c) Coelenterata

(6) Which of the following has the maximum of oxygenated and de-oxygenated blood in the ventricle of its heart?
(a) Fish
(b) Frog
(c) Crocodile
(d) None of these

(b) Frog

(7) Reptiles are:
(a) Oviparous
(b) Viviparous
(c) Ovo-viviparous
(d) None of these

(a) Oviparous

(8) The urea formation in mammals takes place in:
(a) Kidneys 
(b) Spleen
(c) Liver
(d) None of these

(c) Liver

(9) Vertebrates in which placenta is formed during the development of fetus are:
(a) Reptiles 
(b) Aves
(c) Mammals
(d) None of these

(c) Mammals

(10) Lymph most closely resembles with:
(a) Plasma
(b) Interstitial fluid
(c) Blood
(d) None of these

(a) Plasma

(1) Many humans become ill by consuming milk products because they lack:
(a) Bacteria in their intestines
(b) Rennin
(c) Hydrochloric acid
(d) Lactase
(e) None of these



(d) Lactase


(2) Which of the following process cause substance to move across membranes without the expenditure of cellular energy?
(a) Endocytosis
(b) Active transport
(c) Diffusion
(d) None of these



(c) Diffusion


(3) Respiratory pigment present in muscles is called:
(a) Haemoglobin
(b) Myoglobin
(c) Haemocyanins
(d) Globin
(e) None of these


(b) Myoglobin

(4) Which one of the following is not a viral disease?
(a) Mumps
(b) Small-pox
(c) Cow-pox
(d) Tetanus
(e) None of these


(d) Tetanus


(5) Animals obtain Carbohydrates mainly from:
(a) Sucrose
(b) Glycogen
(c) Starch
(d) Glucose
(e) None of these

(c) Starch

(6) Mesosomes are internal extensions of:
(a) Cell Wall 
(b) Cell Membrane 
(c) Chromatin body
(d) None of these


(b) Cell Membrane 

(7) Sugar in each nucleotide of DNA is: 
(a) Deoxyglucose
(b) Ribose
(c) Glucose
(d) Deoxyribose
(e) None of these


(d) Deoxyribose

(8) Species is the basic unit of:
(a) Genetics
(b) Zoology
(c) Ecology
(d) Universe
(e) None of these

(e) None of these

(9) Which one of the following is false about AIDS:
(a) HIV
(b) HAV
(c) T-lymphocytes
(d) Host specific
(e) None of these

(b) HAV

(10) Which statement about plastids is true?
(a) They are power house of cell
(b) They contain DNA and ribosomes 
(c) They are found in all organisms
(d) They are surrounded by a single membrane
(e) None of these

(e) None of these

(11) Which of the following is not found in all bacterial cells?
(a) A nucleoid
(b) Capsule
(c) Cell membrane
(d) Ribosomes
(e) None of these

(c) Cell membrane

(12) A virion is a:
(a) Viral protein
(b) Viral gene
(c) Virus
(d) Viral lysozyme
(e) None of these

(c) Virus

(13) The study of fossils and their relationship to the evolution of life on earth is called:
(a) Fossilization
(b) Palaeontology
(c) Palaeozoology
(d) None of these

(b) Palaeontology

(14) A connecting and supporting tissue in animal is: 
(a) Muscle
(b) Bone
(c) Nerve
(d) Connective
(e) None of these

(d) Connective

(15) Interstitial fluid closely resembles to: 
(a) Rain water
(b) Sea water
(c) Lake water
(d) Pond water
(e) None of these

(e) None of these

(16) The amount of lactic acid in muscles increases when they are lacking in:
(a) CO2
(b) C6H12O6
(c) Energy
(d) Oxygen 
(e) None of these

(d) Oxygen 

(17) If a person eats more protein than are needed, this causes increased production of:
(a) Hormones
(b) Urea
(c) Lactic acid
(d) CO2
(e) None of these

(b) Urea

(18) The growth of human population is most rapid in:
(a) Asia 
(b) Europe
(c) North America
(d) None of these

(a) Asia 

(19) Which type of tissue forms glands? 
(a) Connective
(b) Nervous
(c) Muscle
(d) Epithelial
(e) None of these

(d) Epithelial

(20) Carbon combines with nitrogen in amino acid linkages to form:
(a) Ester bonds
(b) Peptide bonds
(c) Ionic bonds
(d) None of these

(b) Peptide bondsBook. Do not reproduce the questions.

(1) Contractile vacuole in Protozoa is basically concerned with:
(a) Excretion 
(b) Osmoregulation 
(c) Respiration
(d) None of these

(b) Osmoregulation 

(2) Gammules are produced in:
(a) Annelida
(b) Arthropoda
(c) Porifera
(d) None of these

(c) Porifera

(3) Scales in Reptiles originate from:
(a) Ectoderm
(b) Mesoderm 
(c) Endoderm
(d) None of these

(a) Ectoderm

(4) The Chordates are dissected from:
(a) Dorsal side
(b) Ventral side
(c) Lateral side
(d) Both (a) and (b)
(e) None of these

(b) Ventral side

(5) Open type of blood vascular system is present in:
(a) Echinoderms
(b) Chordates
(c) Molluses
(d) None of these

(c) Molluses

(6) Frog has the following number of Neck Vertebrae:
(a) Seven
(b) Nine
(c) Four
(d) Zero
(e) None of these

(b) Nine

(7) Insects have not adapted to the environment:
(a) Aquatic
(b) Fresh water
(c) Marine
(d) None of these

(a) Aquatic

(8) The true jaw is not present in:
(a) Elasmobranchs
(b) Boney Fish
(c) Agnatha
(d) None of these

(c) Agnatha

(9) Sea Horse is included in:
(a) Pisces
(b) Mammals
(c) Insects
(d) Mollusca
(e) None of these

(a) Pisces

(10) A house fly has the following number of legs: 
(a) Four
(b) Eight
(c) Six
(d) None of these

(a) Four

(1) The main division of the chromosomes occurs in:
(a) Prophase
(b) Metaphase
(c) Anaphase
(d) Jelophase
(e) None of these

(c) Anaphase

(2) The protein synthesis occurs in:
(a) Mitochondria
(b) Endoplasmic reticulum
(c) Ribosomes
(d) Acrosome
(e) None of these

(c) Ribosomes

(3) Blood antigens are present in:
(a) Blood serum
(b) RBC’s
(c) WBC’s
(d) Platelets
(e) None of these

(b) RBC’s

(4) Sex linked genes are the genes located on:
(a) X-chromosome only
(b) Y-chromosome only
(c) Both X and Y-chromosomes
(d) X or Y-chromosomes 
(e) None of these

(a) X-chromosome only

(5) Transcription is the phenomenon associated with:
(a) Synthesis of new DNA
(b) Formation of mRNA and DNA
(c) Formation of tRNA
(d) None of these

(d) None of these

(6) Segregation of alleles of a gene occurs in:
(a) Diploid individual
(b) Homozygous individual
(c) Heterozygous individual
(d) All of the above
(e) None of these

(a) Diploid individual

(7) Sodium-Potassium pump is located in:
(a) Liver
(b) Heart Cell
(c) Nerve cell
(d) All of the above 
(e) None of these
(d) All of the above

(8) Pepsin is an enzyme responsible for breaking:
(a) Proteins
(b) Lipids
(c) Fats 
(d) None of these

(a) Proteins

(9) Pace maker is located in:
(a) Liver
(b) Brain
(c) Heart 
(d) Muscle
(e) None of these

(c) Heart 

(10) Follicle stimulating hormones are produced in:
(a) Pituitary 
(b) Ovaries
(c) Thyroid
(d) Kidney
(e) None of these

(a) Pituitary 

(11) Genetic dominance is strongly associated with:
(a) Personality dominance
(b) Adaptive value
(c) Population distribution
(d) None of these

(c) Population distribution

(12) Crossing over is the physical exchange between chromosomes.
(a) Homologous
(b) Non-Homologous
(c) Both (a) and (b)
(d) None of these

(a) Homologous

(13) XXY individual in man is phenotypically a:
(a) Male
(b) Female
(c) Inter sex
(d) None of these

(a) Male

(14) Amino acids are the organic compound behaving like:
(a) Acid
(b) Base
(c) Both (a) and (b)
(d) None of these

(c) Both (a) and (b)

(15) Which of these can be the first living organism on the earth:
(a) Protozoan
(b) Algae
(c) Virus
(d) None of these

(d) None of these

(16) Ontogeny represents the history of an organism.
(a) Revolutionary
(b) Embryonic
(c) Both (a) and (b)
(d) None of these

(b) Embryonic

(17) Nuclear membrane has a structure similar to:
(a) Cell membrane
(b) Mitochondrion
(c) Endoplasmic reticulum
(d) All of these

(d) All of these

(18) Osmosis is the movement of solutes through a membrane.
(a) Permeable
(b) Semi-permeable
(c) Both (a) and (b)
(d) None of these

(b) Semi-permeable
 
(19) Sickle Cell Anemia is the condition where the RBC’s deflate.
(a) Under Oxygen
(b) Absence of Oxygen
(c) Both (a) and (b)
(d) None of these

(b) Absence of Oxygen

(20) Pond is an example of ecosystem:
(a) Complete
(b) Incomplete
(c) Almost complete
(d) None of these

(a) Complete

(1) Despite the structural diversities they are characterized by having soft body protected by calcareous shell developing from the mantle layer. 
(a) Corals
(b) Foraminiferous
(c) Molluses
(d) None of these

(c) Molluses

(2) The members of the phylum are exclusively Marine.
(a) Porifera
(b) Coelenterata
(c) Echino-dermata
(d) None of these

(c) Echino-dermata

(3) How many paired legs are present in Arachnids?
(a) 2 pairs
(b) 3 pairs
(c) 4 pairs
(d) None of these

(c) 4 pairs

(4) A true Coelom is absent in:
(a) Platyhelminthes
(b) Mollusca
(c) Insects
(d) None of these

(a) Platyhelminthes

(5) A single aperture is present in 
(a) Nematoda
(b) Cridaria
(c) Annelida
(d) None of these

(b) Cridaria

(6) The following represents Enterocoelous phylum.
(a) Annelida
(b) Mollusca
(c) Echinodermata
(d) None of these

(c) Echinodermata

(7) It is exclusively a Parasitic group.
(a) Ciliata
(b) Mestigophora
(c) Rhizopoda
(d) Sporozoa
(e) None of these

(d) Sporozoa

(8) Most species of Animal Kingdom belong to this Class:
(a) Acazina
(b) Hexapoda
(c) Crustacea
(d) None of these

(b) Hexapoda

(9) Insect mouth parts are serially homologous.
(a) Claspers
(b) Sting apparatus
(c) Cerci
(d) Legs
(e) None of these

(d) Legs

(10) The only groups of animals which are diploblastic in nature:
(a) Platy helminthes
(b) Coelentrata
(c) Porifera
(d) None of these

(b) Coelentrata

11) The phenomenon in which larva becomes sexually mature.
(a) Retrogressive Metamorphosis
(b) Neoteny
(c) Both ‘a’ and ‘b’
(d) None of these

(b) Neoteny

(12) Amphibians have the following number of chambers in their heart.
(a) 2
(b) 3
(c) 4
(d) 5
(e) None of these

(b) 3

(13) The young are born in less developed condition.
(a) Monotremes
(b) Marsupials
(c) Placentals
(d) None of these

(b) Marsupials

(14) Limbs of Sea Cows and Sea Lions are the product of:
(a) Convergent Evolution
(b) Divergent Evolution
(c) Parallel Evolution 
(d) None of these

(a) Convergent Evolution

(15) In these animals the teeth are reduced to molars without enamel or no teeth are present.
(a) Moles
(b) Bats
(c) Sloths 
(d) None of these

(c) Sloths 

(16) Only hind limbs are lost in:
(a) Snakes
(b) Whales
(c) Bats
(d) None of these

(b) Whales

(17) Among the following which snake is non-poisonous?
(a) Krait
(b) Python
(c) Viper
(d) None of these

(b) Python

(18) Which one is excluded from the Phylum Chordata.
(a) Urochordata
(b) Hemichordata
(c) Cephalochordata
(d) None of these

(b) Hemichordata

(19) The earliest known species of birds is:
(a) Archaeopteryx
(b) Hesperornis
(c) Ichthyornis
(d) None of these

(a) Archaeopteryx

(20) A muscular diaphragm helps to move air into and out of the lungs in:
(a) Amphibians
(b) Reptilians
(c) Avians
(d) Mammalians 
(e) None of these

(d) Mammalians 

(1) “Chiasma” formation could be seen first time in the following stage/sub stage of Meiosis:
(a) Leptotene
(b) Zygotene
(c) Pachytene
(d) Diplotene
(e) None of these

(b) Zygotene

(2) In protein synthesis each triplet code binds itself with one:
(a) Leptotene
(b) Zygotene
(c) Diplotene
(d) None of these

(b) Zygotene

(3) For the rapid production of antibody in the precipitate test involving a rabbit one of the following animals could be used.
(a) Frog
(b) Lizard
(c) Fowl
(d) None of these

(c) Fowl

(4) In Drosophila very rarely father transmit his sex-linked trait to his normal son (in a cross of white eyed female with red eyed male):
(a) In the case of primary non-disjunction
(b) In the case of secondary non-disjunction
(c) In the case of a normal cross
(d) None of these

(5) 13:3 Ration in “F2” is obtained in the case of:
(a) Complementary genes for colours in corn
(b) Coat colours in rodents
(c) In epistatic genes
(d) None of these

(a) Complementary genes for colours in corn

(6) Crossing over rarely or never takes place in the male of:
(a) Mice
(b) Poultry
(c) Man
(d) Drosophila
(e) None of these

(d) Drosophila

(7) XXY individual in Drosophila is phenotypically:
(a) Male
(b) Female
(c) Inter sex
(d) None of these

(a) Male

(8) Fossils of which of these first living organisms were found?
(a) Protozoan
(b) Algea
(c) Virus
(d) None of these

(a) Protozoan

(9) Which of these are exclusively functional proteins?
(a) Hormones
(b) Enzyme
(c) Plasma
(d) None of these

(b) Enzyme

(10) Phytogeny represents the history of an organism:
(a) Evolutionary
(b) Embryonic
(c) Both ‘a’ and ‘b’
(d) None of these

(a) Evolutionary

(11) Sickle Cell trait is found in:
(a) Homozygous
(b) Heterozygous
(c) Both ‘a’ and ‘b’
(d) None of these

(b) Heterozygous

(12) The first living and respiring organism on earth were:
(a) Aerobes
(b) Anaerobes 
(c) Both ‘a’ and ‘b’
(d) None of these

(b) Anaerobes 

(13) The major portion of digestion takes place in the:
(a) Stomach
(b) In the small intestine
(c) In the large intestine
(d) None of these

(b) In the small intestine

(14) Practically all absorption of digested food occurs in:
(a) Large intestine
(b) Small intestine
(c) Both ‘a’ and ‘b’
(d) None of these

(b) Small intestine

(15) Sibling species are produced as a result of:
(a) Allopatric speciation
(b) Sympatric speciation
(c) Both ‘a’ and ‘b’
(d) None of these

Allopatric speciation

(16) In the days just after its formation the earth had:
(a) Reducing atmosphere
(b) Oxidative atmosphere
(c) Both ‘a’ and ‘b’
(d) None of these

(a) Reducing atmosphere

(17) Zygotes containing “XY” are females in:
(a) Drosophila
(b) In moths
(c) In grasshoppers
(d) None of these

(a) Drosophila

(18) The “Y” Chromosomes is sexually neutral in:
(a) Man
(b) In Drosophila
(c) In moth
(d) None of these

(d) None of these

(19) Marsupial are found in:
(a) Only Australian region
(b) In near arctic and Neotropical regions
(c) Both ‘a’ and ‘b’
(d) None of these

(d) None of these

(20) In which stage of Meiosis Cento mere of each dyad divides?
(a) Metaphase I
(b) Metaphase II
(c) Anaphase I
(d) Anaphase II
(e) None of these

(b) Metaphase II