Zoology Solved MCQs Tests Past Papers Sample Papers

Zoology Solved MCQs Tests Past Papers Sample Papers

(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) 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) 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

Zoology Notes for CSS Examination

1. Metamerically segmented worms belong to phylum:

(a)Nematoda (b)Platyhelminthes (c) Annelida (d)None of these

2. Which of the following is a multiflagellate Protozoa?

(a)Ceratium (b)Noctiluca (c) Leishmania (d)None of these

3. Spicules are secreted by:

(a)Scleroblasts (b)Nematoblasts (c) Endoblasts (d)None of these

4. Which of the following is a porous opening through which water enters the hydrocoel of an


(a)Pedicellaria (b)Tube feet (c) Madreporite (d)None of these

5. The body cavity of most triploblastic animals formed by splitting the mesoderm into an outer and an

inner layer is called:

(a)Coelentron (b)Coelom (c) Colon (d)None of these

6. Compound eyes are found in:

(a)Platyhelminthes (b)Ecinodermate (c) Mollusca (d)None of these

7. Egg-laying mammals are placed in sub class:

(a)Meththeria (b)Prototheria (c) Theria (d)None of these

8. Open circulatory system is found in:

(a)Birds (b)Earthworms (c) Cockroaches (d)None of these

9. Bivalve molluscs are usually:

(a)Scavangers (b)Deposit feeder (c) Filter feeder (d)None of these

10. The pillar or central axis around which the whorls of a gastropod shell are coiled is called:

(a)Columella (b)Collembola (c) Colloblasts (d)None of these

11. The ninth vertebra of frog is known as:

(a)Cervical (b)Sacral (c) Urostyle (d)None of these

12. The stage in an embryo in which the primary germ layers have been laid down is called:

(a)Gastrula (b)Blastula (c) Morula (d)None of these

13. A fish which migrates down river to spawn in the sea is called:

(a)Anadromous (b)Catadromous (c) Dromiacea (d)None of these

14. Which of the following has four-chambered heart?

(a)Dog fish (b)Frog (c) Pigeon (d)All of these

15. Facets by which vertebrae articulate with one another are called:

(a)Metapophyses (b)Parapophyses (c) Zygopophyses (d)None of these

16. The inner membrane of the two foetal membranes in reptiles, birds and mammals is called:

(a)Amnion (b)Chorion (c) Peritoneum (d)None of these

17. Amphioxus is an example of:

(a)Urochordata (b)Cyclostomata (c) Hemichordata (d)None of these

18. Filarial worm (genus Wuchereria) belong to phylum:

(a)Nematoda (b)Platyhelminthes (c) Annelida (d)None of these

19. Notochord is formed from primary:

(a)Ectoderm (b)Mesoderm (c) Endoderm (d)All of these

20. Shell fish includes:

(a)Shrimp, Crabs and eel fish (b)Dog fish, crabs and lobsters

(c) Lobsters, crabs and shrimps (d)All of these

1. Which of these is a direct source of energy for muscle contraction?

(a)ATP (b)Creatine phosphate (c) Lactic acid (d)Glucose (e)None of these

2. Muscle fatigue is caused by:

(a)CO2 (b)Lactic acid (c) Fumaric acid (d)Ethyl alcohol (e)   None of these

3. The functional unit in a skeletal muscle is called:

(a)Actin filament (b)Sarcomere (c) Z line (d)Myosin filament (e)   None of these

4. We would describe the layered, flat, scaly epithelium of human skin as:

(a)Simple Squamous (b)Stratified Squamous (c) Stratified Columnar

(d)Pseudo Stratified Cubiodal (e)   None of these

5. Which of the following is not considered to be a tissue?

(a)Cartilage (b)Mucous membrane lining the stomach (c) Blood (d)Brain (e)   All of these

6. As a Zoologist you would look for looping movement in:

(a)Earthworms (b)Poly chaetes (c) Echinoderms (d)Leeches (e)   None of these

7. The elements of nervous system which help in co-ordination are:

(a)Receptors (b)Neurons (c) Effectors (d)All of these (e)   None of these

8. The distal ends of which of these neurons lie adjacent to blood stream:

(a)Afferent neurons (b)Efferent neurons (c) Inter neurons

(d)Neuro secretory neuron (e)   All of these

9. The electrical potential that exists across a cell membrane is:

(a)Resting membrane potential (b)Active membrane potential (c) Automatic potential

(d)All of these (e)   None of these

10. A nerve is a:

(a)Collection of neurons (b)Concentration of dendrites and exons

(c) Bundles of exons or dendrites of neurons

(d)Bundles of exons or dendrites bounded by connective tissues (e)   None of these

11. Which of these is a correct statement?

(a)All of the neurons are excitable (b)All of the neurons can transmit impulses across their membrane

(c) Transmission of nurve impulses is always unidirectional (d)All of these statements

(e)   None of these

12. Sodium-Potassium pump operates with the help of which of these enzymes:

(a)Na+―K+ ATPase (b)Phosphatase (c) Isomerase (d)Hydrolase (e)   None of these

13. Name of the chemical messengers released to the exterior of one animal that affect the behaviour of another individual of the same species:

(a)Neuropeptides (b)Neurohormones (c) Pheromones (d)Neurotransmitters (e)   None of these

14. Hormones that the Thyroid gland secrets are:

(a)Proteins (b)Amines (c) Steroids (d)Carbohydrates (e)   All of these

15. Thyroxine is:

(a)An enzyme (b)A hormone (c) A vitamin (d)An excretory waste (e)   None of these

16. Development of Secondary Sexual characters in a female is controlled by:

(a)STH (b)Androgens (c) TSH (d)Estrogens (e)   None of these

17. Insulin is a hormone which is secreted by:

(a)Islet of langerhans and regulates glucose level in blood (b)Thyroid and regulates growth

(c) Adrenals and regulates heart beat (d)Pituitary and regulates reproduction (e)   None of these

18. Hormone responsible for regulation of calcium and phosphorous is secreted by:

(a)Thyroid (b)Para-thyroid (c) Adrenals (d)Thymus (e)   None of these

19. A hormone responsible for conversion of glucose into glycogen within the liver is called:

(a)Secretin (b)Gastrin (c) Pancreozymin (d)Insulin (e)   None of these

20. Fibrinogen is found in the:

(a)Bile and produced in liver (b)Blood and produced by RBCS

(c) Blood and produced in liver (d)Bone and produced in bone marrow (e)   None of these

Zoology MCQs Notes for PMS Examination

(i) Chano cysts are found in?
(a) Coelentrate
(b) Annelida
(c) Porifera
(d) Arthropoda
(e) All of these

(ii) House fly is a common insect having ______ legs.
(a) 4
(b) 6
(c) 8
(d) None of these

(iii) Silver fish is included in:
(a) Pisces
(b) Arthropoda
(c) Annelida
(d) None of these

(iv) Number of vertebrae in neck of a giraffe are:
(a) 10
(b) 5
(c) 7
(d) None of these

(v) Flame cell is typical of:
(a) Annelida
(b) Chordata
(c) Porifera
(d) Platyhelminthes
(e) None of these

(vi) Nervous system originates from:
(a) Epidermis
(b) Mesodermis
(c) Endodermis
(d) None of these
(e) All of these

(vii) Mammals are characterized by:
(a) Mammary Glands
(b) Hair
(c) All of these
(d) None of these

(viii) Nucleus is not present in RBC of:
(a) Fish
(b) Snake
(c) Bird
(d) Mammal
(e) None of these

(ix) Scales in fish derive their origin from:
(a) Epidermis
(b) Mesodermis
(c) Endodermis
(d) None of these

(x) Sound in insect is produced through:
(a) Mouth
(b) Tracheal movements
(c) Wing beat
(d) None of these

(xi) Sole of foot in man has ______ location:
(a) Dorsal
(b) Ventral
(c) lateral
(d) None of these

(xii) Coelome in adult mammals is represented by:
(a) Visceral cavity
(b) Cavity in brain
(c) Both of these
(d) None of these

(xiii) The Skelton in insects is:
(a) Exoskeleton
(b) Endoskeleton
(c) None of these
(d) Both of these

(xiv) Sea horse is included in:
(a) Mammals
(b) Fish
(c) Reptiles
(d) None of these

(xv) Circulatory system is open type in:
(a) Annelida
(b) Insecta
(c) Mammals
(d) None of these

(xvi) The body cavity is regarded as pseudocoele in Nematodes because:
(a) Has ectodermal origin
(b) Not completely lined by Mesodermal epithelium
(c) Has endodermal origin
(d) None of these
(e) All of these

(xvii) True metaneric segmentation is characteristic of:
(a) Molluses
(b) Annelida
(c) Arthropoda
(d) None of these

(xviii) Hollow dorsal nervous system is present in:
(a) Amphiexus
(b) Fish
(c) Mammals
(c) None of these
(e) All of these

(xix) Contractile vacuole in protozoa is mainly responsible for:
(a) Excretion
(b) Osmoregulation
(c) respiration
(d) None of these

(xx) Scorpion is included in:
(a) Insecta
(b) Arachnida
(c) Echinodermata
(d) None of these

(i) Cell membrane is formed of:
(a) Carbohydrate
(b) Lipid
(c) Protein
(d) Lipoprotein
(e) None of these

(ii) Electron transport chain reaction occur in:
(a) Cell membrane
(b) Cell wall
(c) Endoplasm
(d) Mitochondrion
(e) None of these

(iii) Ribosomes in cell are responsible for:
(a) Protein formation
(b) Glycolysis
(c) Lipid breakdown
(d) All of these
(e) None of these

(iv) Golgi complex is responsible for:
(a) Carbohydrate metabolism
(b) Protein synthesis
(c) Lipid synthesis
(d) None of these
(e) All of these

(v) Basic excretory chemicals in all the cells is:
(a) Urea
(b) Uric acid
(c) Ammonia
(d) None of these
(e) All of these

(vi) Oxygen transport from lungs to tissue occurs through:
(a) Difference in pressure
(b) Solubility in plasma
(c) Attachment with RBC surface
(d) None of these
(e) All of these

(vii) FSH (Follicle Stimulating Hormone) is produced in:
(a) Ovary
(b) Hypothalamus
(c) Pituatary
(d) None of these
(e) All of these

(viii) Lipase is an enzyme responsible for:
(a) Carbohydrate metabolism
(b) Lipid breakdown
(c) Protein breakdown
(d) None of these

(ix) Law of segregation is applicable to:
(a) Homozygous individual
(b) Heterozygous individual
(c) Both Homozygous and heterozygous
(d) None of these

(x) Sex linked genes concern:
(a) Sex characters
(b) Somatic character
(c) Mostly somatic character
(d) None of these

(xi) XXY individual in man is a phenotypic male, because:
(a) Two X chromosomes are present
(b) Y-chromosome is present
(c) Both X and Y chromosomes are present
(d) None of these

(xii) Trisomic condition can be produced through:
(a) Primary Non-disjunction
(b) Secondary non-disjunction
(c) Both a and b
(d) None of these

(xiii) First living organism on this planet was:
(a) A protozoan
(b) An algae
(c) Bacteria
(d) A virus
(e) None of these

(xiv) Theory of Natural Selection was proposed by:
(a) Charles Darwin
(b) A.R. Wallace
(c) Both a and b
(d) None of these

(xv) Lamarck’s theory of inheritance of acquired characters says:
(a) Environment forces a character
(b) Environment selects a character
(c) Environment has no effect
(d) None of these

(xvi) Orthoselection means:
(a) Selection occurring at different times
(b) Selection occurring at different rates
(c) Selection occurring in one direction
(d) None of these
(e) All of these

(xvii) Haeckle’s biogenetic law says:
(a) Ontogeny repeats phylogeny
(b) Phylogeny repeats ontogeny
(c) None of these
(d) Both a and b together

(xviii) Ecosystem is a system involving biotic and abiotic components which:
(a) Interact
(b) Interact for energy flow
(c) No interaction
(d) None of these

(xix) Nitrogen biogeochemical cycle is regarded as gasous cycle because:
(a) Nitrogen is a gas
(b) Recycling is almost complete
(c) Major part of cycle is in gasous state
(d) None of these

(xx) Raw material for evolution are variation, which are produced through:
(a) Gene mutation
(b) Chromosomal aberration
(c) Both a and b
(d) None of these