PPSC Lecturer Zoology Past Papers | PPSC Lecturer BS-17 Past Papers Solved PDF

If you are looking for Lecturer PPSC Past Papers preparation you are at the right place. This page is about the PPSC Lecturer Zoology Past Papers which was conducted by the Punjab Public Service Commission for the recruitments of various posts of Lecturer BS-17 for the Punjab Higher Education Department.

Complete Edition: PPSC Past Papers held in 2022, 2021, 2020, 2019, 2018

PPSC Lecturer Zoology Past Paper Solved held in 2018

Q1: At cytokinesis, in plants, a structure phragmoplast is formed from vesicles which originate from?
A) Lysosomes
B) Centriole
C) Golgi complex
D) Glyoxysome
 
Q2: An alpha helix is an example of ……. structure of protein?
A) Primary
B) Secondary
C) Tertiary
B) Quaternary
 
Q3: Central molecular diagram of Biology is?
A) DNA → DNA → protein
B) DNA → RNA → protein
C) RNA → DNA → protein
D) RNA→ protein → RNA
 
Q4: An enzyme …… the activation of energy of the reaction?
A) Lowers
B) Raises
C) Dose not affect
D) None of these
 
Q5: Which cell type you will prefer to take the nucleus of cloning?
A) B-cell
B) RBC
C) Embryonic cell
D) Sperm
 
Q6: Where you do transfer nucleus for cloning?
A) Enucleated cell
B) Enucleated egg
C) Egg
D) Sperm
 
Q7: With respect to outside, the inside of neutron is at rest is ……?
A) More negatively charged
B) More positivle charged
C) Same charge
D) Zero electrical potential
 
Q8: What is the normal resting potential of a neuron?
A) -70 mv
B) +70 mv
C) 0 mv
D) -90 mv
 
Q9: What are characters of stem cells?
A) Self-renewing
B) Can differentiate each other
C) Both A & B
D) None of these
 
Q10: Prions are made up of ……?
A) Viruses
B) DNA
C) RNA
D) Protein
 
Q11: Larva of a sponge is known as?
A) Planula Larva
B) Trochophore Larva
C) Glochidium Larva
D) Amphiblasula Larva
 
Q12: Sycone belongs to ……. class?
A) Calcarea
B) Porifera
C) Desmosspongia
D) Hexactinellida
 
Q13: The class corals is?
A) Anthozoa
B) Scyphozoa
C) Hydrozoa
D) None of these
 
Q14: A renal portal system is found in?
A) Man
B) Horse
C) Rabbit
D) Frog
 
Q15: These are free-living Platyhelminthes?
A) Cestoda
B) Trematoda
C) Turbellaria
D) Nematoda
 
Q16: Turner’s syndrome is represented by ……?
A) XYY
B) XO
C) XXY
D) XXX
 
Q17: Synthesis of RNA and proteins take place in ……?
A) S Phase
B) M Phase
C) G1 phase
D) G2 Phase
 
Q18: Why are there more males with color blindness than females?
A) The gene is found on the Y chromosome
B) The recessive gene is marked by another X chromosome in females
C) All the sons of the affected man will have color blindness
D) None of these
 
Q19: During meiosis, the chromosomes become daughter chromosomes during?
A) Prophase 1
B) Metaphase II
C) Anaphase II
D) None of these
 
Q20: The genetic disorder scale cells anemia is an example of?
A) Pleiotropy
B) Homozygous dominance
C) Epistasis
D) None of these

Q21: Which of the following is correct for Aneuploidy?
A) 3n+1
B) 4n+1
C) 2n+1
D) None of these
 
Q22: The X rays diffraction studies by …… played key role to the discovery of DNA structure?
A) Watson & Crick
B) Franklin
C) Chargaff
D) None of these
 
Q23: The triplet code of CAT in DNA is represented as ……. in mRNA and ……. in tRNA?
A) GAA, CAT
B) CAT, CAT
C) GUA, CAU
D) GTA, CAU
 
Q24: In Turner’s syndrome?
A) Premature cataract is common
B)  The cells contains 45 chromosomes
C) The offsprings have 50% of inheriting the disease
D) The patient is below the average height
 
Q25: The following is a steroid hormone?
A) Testosterone
B) Cortisol
C) Aldosterone
D) Growth hormone
 
Q26: Insulin is a human ……?
A) Gene
B) Protein
C) Glucose
D) None of these
 
Q27: Fibrinogen is found in …….?
A) Bile and produced in liver
B) Blood and produces by RBCS
C) Blood and produced in liver
D) None of these
 
Q28: Petromyzon belongs to which class?
A) Angatha 
B) Gnathostomata
C) Protochordata
D) None of these
 
Q29: Lateral line system is present in?
A) Fish
B) Frog
C) Reptiles
D) None of these
 
Q30: Classification of Arthropoda is based on the number and structure of?
A) Eyes and winds
B) Body segments and appendages
C) Muscles and ligaments
D) Gills and heart
 
Q31: The True nervous system was first developed in?
A) Annelida
B) cnidarians
C) Flat worm
D) Sponge
 
Q32: The Uniqueness of adult Echinoderms is due to …….?
A) Penta-radial symmetry , Hydrocoele
B) Bilateral symmetry , Hydrocoele
C) Bilateral symmetry, enterocoele
D) Penta-radial symmetry , enterocoele
 
Q33: The larva form of liver fluke has cilia?
A) Reia
B) sporocyst
C) Meracidium
D) Metacercaria
 
Q34: Which of the following is evidence that molluscs and annelids may have a common ancestor?
A) They have setae
B) They have a trochophore larva
C) Neither group has lungs
D) They include both marine and terrestrial animals
 
Q35: The arboreal adaptations are those that help the animal to line in or on?
A) Burrows
B) Air
C) Rocks
D) Trees
 
Q36: Ctenoid scales are present on the bodies of?
A) Chondrichthyes
B) Osteichthyes
C) Cyclostomes
D) Myxini
 
Q37: Birds that fly at high altitudes need an especially efficient respiratory system because?
A) At high altitude the air sacs do not function
B) There is little oxygen in the atmosphere at high altitudes
C) At high altitudes birds flap their wings faster
D) There is little carbon dioxide at high altitudes
 
Q38: When cell wall is removed from plant cell then it is called?
A) Protoplasts
B) Protoblasts
C) Mytoplast
D) Prothallus
 
Q39: The virus used during cell fusion technique is?
A) Rous sarcoma
B) Influenza
C) Retrovirus
D) Sandal
 
Q40: Nucleolar organizer is separated from rest of chromosome?
A) Primary constriction
B) Chromomere
C) Secondary constriction
D) Centromere

Q41: This chemical inhibits protein synthesis in Prokaryotes?
A) Amanitin
B) Cyclohexamide
C) Penicilline
D) Chloramphenicol
 
Q42: Linker region have …… base pairs when nucleosomes repeat after every 200 bp?
A) 34
B) 44
C) 54
D) 64
 
Q43: Nucleic acids absorb ultraviolet light at?
A) 320 nm
B) 260 nm
C) 480 nm
D) 660 nm
 
Q44: RNA polymerase III transcribe the gene/s of?
A) mRNA
B) rRNA
C) tRNA
D) All of these
 
Q45: Reinnitiation of DNA duplication within the same cycle is prevented in?
A) Eukaryotes
B) Prokaryotes
C) Viroids 
D) Viruses
 
Q46: Thymine dimmers damage in DNA is produced by …….. radiations?
A) Gamma
B) Infra-red
C) Ultraviolet
D) All of these
 
Q47: Which of the following is responsible to cause Klinefelter’s syndrome?
A) XO
B) XXY
C) XX
D) XYY
 
Q48: Which of the following is initiation codon?
A) UGU
B) UAG
C) AUAA
D) AUG
 
Q49: This factor is necessary for transcriptional initiation in prokaryotes?
A) Alpha
B) Beta
C) Gamma
D) All of these
 
Q50: Methyl group is attached to carbon number 5 of?
A) Thymine
B) Cytosine
C) Guanine
D) Uracil
 
Q51: The retention of the larval forms and structures in adults is known as?
A) Metamorphosis
B) Retrogressive growth
C) Paedomorphosis
D) Puberty
 
Q52: In the embryonic life, the RBC’s are formed in the spleen and?
A) Thymus
B) Kidney
C) Liver
D) Stomach
 
Q53: This germinal layer in animal embryo gives rise to lungs?
A) Endoderm
B) Ectoderm
C) Mesoderm
D) Protostome
 
Q54: The process by which the outside cell layer moves towards the deeper layer of the embryonic cell termed as?
A) Epiboly
B) Emboly
C) Regression
D) Inversion
 
Q55: In oocyte development lamp brush chromosome serves as the hub of …… activity?
A) Replicational
B) Transcriptional
C) Transitional
D) Polyteny
 
Q56: The development of a whole individual is technically termed as?
A) Allometry
B) Morphometry
C) Ontogeny
D) Orthometry
 
Q57: What is the name of a functional kidney in fishes?
A) Pronephros
B) Mesonephros
C) Metanephros
D) Opisthonephros
 
Q58: The hormone responsible for the Amphibian metamorphosis is?
A) Growth hormone
B) Calcitonin
C) Thyroxine
D) FSH
 
Q59: Plasmolysis is the shrinkage of protoplast due to ……. of water?
A) Endosmosis
B) Diffusion
C) Active transport
D) Ex-osmosis
 
Q60: Uric acid is the chief nitrogenous waste of?
A) Fish and Amphibian
B) Amphibian and Reptiles
C) Reptiles and Birds
D) Birds and Mammals

 

Q61: The breakdown of alveoli occurs in?
A) Emphysema
B) Asthma
C) Tuberculosis
D) Pollen allergy
 
Q62: The heart of class Pisces is?
A) Single circuit
B) Double circuit
C) Triple circuit
D) Open circuit
 
Q63: The conversion of fibrinogen to fibrin is catalyzed by the enzyme?
A) Fibrin stabilizing factor
B) Thrombinase
C) Prothrombinase
D) Hydroxylase
 
Q64: The sarcoplasmic reticulum in the muscle cells acts as a store of ……. ions?
A) Potassium
B) Sodium
C) Calcium
D) Magnesium
 
Q65: This protein has anti-viral activity?
A) Interferon
B) C-reactive
C) Insulin
D) Growth factor
 
Q66: Ring form ribose sugar is known as?
A) Ribopyranose
B) Ribofuranose
C) Furoribanose
D) None of these
 
Q67: The positive charge on Histones is due to an abundance of the following amino acids?
A) Valine or Histidine
B) Arginine or Lysine
C) Proline or Methionine
D) Alanine or Valine
 
Q68: Ptyalin is an amylase which digests starch and glycogen to?
A) Sucrose
B) Lactose
C) Maltose
D) Galactose
 
Q69: Metal ions used by many enzymes to change their non-functional active sites to functional ones are called?
A) Co-enzymes
B) Apo-enzymes
C) HoloenzYmes
D) Co-factor
 
Q70: The breakdown of a glucose molecule in two molecules of pyruvate results in the production of ……. ATP molecules?
A) 2
B) 4
C) 36
D) 38
 
Q71: In glucose molecule, the number of asymmetric carbon atoms is?
A) One
B) Two
C) Three
D) Four
 
Q72: Which of the following is NOT an amino acid?
A) Glutamic acid
B) Aspartic acid
C) Glutarnine
D) Palmitic acid
 
Q73: What will be the frequency of T in a population if tasters are 64%?
A) 0.24
B) 0.4
C) 0.6
D) 0.8
 
Q74: The process in which bacteria take up the DNA released from lysed cells nearby or surrounding medium is?
A) Generalized Transduction
B) Conjugation
C) Specialized transduction
D) Transformation
 
Q75: Blood group system ABO was discovered by?
A) Bernstein
B) Landsteiner
C) Correns
D) T.H. Morgan
 
Q76: Which is the correct order, from smallest to largest of base pairs?
A) Plasmid, transposon, chromosomal DNA
B) chromosomal DNA, transposon, plasmid
C) Transposon, plasmid, chromosomal DNA
D) Plasmid, chromosomal DNA, transposon
 
Q77: Phenotype ratio of monohybrid crosses with incomplete dominance?
A) 3 : 1
B) 1: 2 : 1
C) 2 : 2
D) 9 : 3 : 3 : 1
 
Q78: Assuming Hardy-Weinberg equilibrium, what will be the genotype frequency of heterozygote, where frequency alleles being studied are 0.7 and 0.3?
A) 0.42
B) 0.5
C) 0.48
D) 0.21
 
Q79: The most abundant and best-known greenhouse gas is?
A) Methane
B) CO2
C) CFCs
D) Nitrogen
 
Q80: Mangrove forests are common in?
A) Bahawalpur
B) Karachi
C) Murree Hills
D) Quetta

 

Q81: The environment where evaporation exceeds precipitation is called?
A) Desert
B) Tropical
C) Temperate
D) Coniferous
 
Q82: This step ios absent in the Calvin cycle?
A) Carbon fixation
B) Oxidation
C) Reduction
D) Regeneration of CO2 acceptor (RuBP)
 
Q83: Grassland ecosystems are common in Pakistan like in?
A) Chinji
B) Lal Sunhara
C) Magalla
D) Deosai
 
Q84: A large regional community primarily determined by climate is?
A) Biome
B) Biotype
C) Ecotone
D) Range
 
Q85: Which of the following trophic level represents the carnivores?
A) Producers
B) Primary consumers
C) Secondary consumers
D) Decomposers
 
Q86: Without this phenomenon average temperature of the earth might be less than -71°C?
A) Ozone depletion
B) Greenhouse effect
C) Deforestation
D) Desertification
 
Q87: Morphology similar or identical populations which are reproductively isolated are?
A) Sibling species
B) Allopatric species
C) Parapatric species
(D) Geographical species
 
Q88: These rocks are rich in fossils?
A) Igneous rocks
B) Sedementary rocks
C) Metamorphic rocks
D) Salt mines
 
Q89: Human dentition is of type?
A) Lophodont
B) Selenodont
C) Bunodont
D) Hypsodont
 
Q90: Darwin was strongly influenced by the book An Essay on the Principles of Population written by?
A) Erasmus
 B) Linnaeus
C) Wallace
D) Malthus
 
Q91: Sahara desert demark the regions?
A) Ethiopian and Palearctic
B) Oriental and Neotropical
C) Ethiopian and Oriental
D) Palearctic and Nearctic
 
Q92: An endemic species is ……?
A) Epidemic disease
B) A taxonomist’s mistake
C) A taxonomist’s choice
D) Which is found uniquely in one place
 
Q93: The specimen on which the taxonomic description is based is?
A) Holotype
B) Homotype
C) Heterotype
D) Homonym
 
Q94: This is small locally located Subpopulation of organisms subjected to selection?
A) Cline
B) Phenon
C) Deme
D) Axon
 
Q95: Wildlife of Pakistan includes a unique aquatic mammal protected by various wildlife agencies?
A) Blue Dolphin
B) Porpoise
C) Sea Whale
D) Blind Dolphin
 
Q96: An organism that has escaped from domestication and returned, partly or wholly, to a wild state is called?
A) Native
B) Vulnerable
C) Ferals
D) Semi-wild
 
Q97: When a single gene effects two or more traits, the phenomenon is called?
A) Transposition
B) Transduction
C) Epistasis
D) Pleiotropy
 
Q98: This is a polyunsaturated fatty acid?
A) Oleic acid
B) Linleic acid
C) Palmitic acid
D) Palmitleic acid
 
Q99: Insulin has 51 amino acids, which are arranged in two polypeptide chains having?
A) 20 & 31 amino acids
B) 11 & 40 amino acids
C) 21 & 31 amino acids
D) 25 & 26 amino acids
 
Q100: In Microcephaly, the individuals are born with small?
A) Skull
B) Eyes
C) Brain
D) Hands