PPSC Lecturer Zoology Solved MCQS With Answers

 1.        Which of the following groups of animals has a cellular or unicellular body

A.      porifera

B.       protozoa

C.       eumetazoa

D.      cnidaria

 

2.        Which contribute to the success of Mendel

A.      qualitative analysis of data

B.       observation of distinct inherited traits

C.     *his knowledge of biology

D.      consideration of one character at one time

3.        Genetic identity of a human male is determined by

A.      autosomes

B.       nucleolus

C.       cell organelles

D.       sex chromosomes

4.        Upper part of sea or aquatic ecosystem contains

A.     plankton

B.       nekton

C.       benthos

D.      plankton andnekton

 

5.        The structure that is used for feeding in most molluscs is the

A.      buccal cavity

B.       radula

C.       mouth

D.      odontophore

6.        Which one of the following pairs is not correctly matched

A.      cursorial adaptations – Limb bones elongated

B.       fossorial adaptations – Develops shoulder girdle

C.      arboreal adaptations – Webbed feet

D.      volant adaptations – Fusion of certain bones,

7.        Lamarck’s theory of organic evolution was published in the book entitled

A.      Systima Naturee

B.      Philosophic Zoologique

C.       Origin ofspecies

D.      none of these

 8.        Metabolic rate in mammals is controlled by

A.      pancreas

B.       thyroid

C.       pituitary

D.      liver

 9.        The ambulacral groove is found between the

A.      rows of tube feet

B.       radial nerves

C.       layers ofpedicellariae

D.      rows of dermal ossicles

 10.        The agnathans and gnathostomes branched apart most likely during the

A.      cambrian period

B.       silurian period

C.       devonian period

D.      jurassic period

11.        Many echinoderms have two parts to the stomach, these two parts are the

A.      enzymatic,cecal

B.       cecal, cardiac

C.      cardiac, pyloric

D.      pyloric, enzymatic

 12.  Which of the following fish may be characterized as eel-like, parasitic, and possessing a cartilaginous skeleton

A.      chimera

B.       hag fish

C.      lamprey

D ostracoderm

13.        Which of the following evolved from a group of carnivorous pelycosaurs

A.      therapsids

B.       labyrinthodonts

C.       anurans

D.      theropods

 14.        The freshwater fish that survived the Devonian period possessed

A.      efficient gills

B.       lungs

C.       countercurrent flow

D.      paedomorphosis

 15.        Which of the following groups of animals has no parasites

A.      platyhelminthes

B.       nematoda

C.       porifera

D.      echinodermata

 16.        tt mates with Tt. What will be characteristic of offspring

A.      75% recessive

B.      50% recessive

C.       25% recessive

D.      all dominant

 17.        Fertilizin is a chemical substance produced from

A.     mature eggs

B.       acrosome

C.       polar bodies

D.      middle piece of sperm

18.        Association of animals when both partners are benefited

A.      colony

B.       commensalism

A.     mutualism

 19.        The trochophore larva indicates a common ancestry for which of the following pairs

A.      Mollusca-Annelida

B.       Mollusca-Cnidaria

C.       Mollusca-Cephalopoda

D.      Mollusca-Nematoda

 20.        The desert animals confine their activities during night time, because they

A.      can see well during the night

B.       get sufficient food during night

C.        have a problem of conservation of water during the day time

D.      face less competition for food during night

21.        The characters of no shell, integumental scales, a reduced head and being dioecious describes which of the following molluscs

A.      caudofoveata

B.       solenogastres

C.       monoplacophora

D.      polyplacophora

 22.   What is the correct sequence of zonation in the lentic environment (i) Profundal zone (ii) Sub-littoral zone (iii) Littoral zone

A.      i, ii, iii

B.       i, iii, ii

C.       ii, iii, i

D.      iii, ii, i

 23.        Which of the following facts make Lamarckism doubtful

A.      neck of giraffe elongated for grazing from high trees

B.       trees of high altitudes have sloppy branches to avoid deposition of snow

C.       deer is fast runner for protection from predators

D.     indian ladies have been getting their ears pierced since ages but pierced ears  are not inherited

24.        HCG is secreted by

A.      placenta

B ammensalism

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

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

(27) 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

(28) 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

(29) 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

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

(31) Species is the basic unit of:

(a) Genetics
(b) Zoology
(c) Ecology
(d) Universe
(e) None of these

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

(33) 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

(34) 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

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

(36) 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

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

(((((((38) 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

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

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

http://feeds.feedburner.com/ecarepk
Exit mobile version