Classification of Animals MCQs Part I

1) The branch of biology that deals with the study of insects is
a) Ethology
b) Entomology
c) Agronomy
d) Ichthyology

2) Rearing of bee, or bee keeping, especially for commercial purposes, is called
a) Horticulture
b) Sericulture
c) Apiculture
d) Mariculture

3) Microbiology deals with the study of
a) All plants
b) All animals
c) Microscopic plants
d) Small microscopic plants and animals known as microbes

4) The breeding of silkworms for the production of natural silk is known

a) Apiculture
b) Pisciculture
c) Sericulture
d) Tissue culture

5) The subcellular level of biological organisation is found in
a) Sponges
b) Coelenterates
c) Coacervates
d) Protists

6) An example of an oviparous mammal is the
a) Man
b) Hen
c) Duck billed platypus
d) Hemidactylus

7) The advanced character of crocodiles over other reptiles is their
a) Ability to live in water
b) Capacity to lay cleidoic eggs
c) Four chambered heart
d) Powerful jaw muscles

8) Which of the following shows maximum diversity?
a) Plantae
b) Animalia
c) Monerans
d) Protistants

9) The larvae of the dragon fly are called
a) Naiads
b) Nymphs
c) Caterpillars
d) Maggots

10) The prawn respires by
a) Ctenidia
b) Branchiostigite
c) Epipodites
d) All

11) Which one of the following represents a fossil form?
a) Peripatus
b) Arachnids
c) Limulus
d) Trilobite

12) Metamorphosis is stimulated by
a) Hormones
b) Temperature
c) Humidity
d) Food

13) Division of labour is found in
a) Houseflies
b) Bed bugs
c) Mosquitoes
d) Honey bees

14) Discontinuous distribution is exhibited by
a) Prawn
b) Peripatus
c) Limulus
d) Scorpion

15) The “green gland” is the excretory organ in
a) Prawns
b) Insects
c) Earthworms
d) Pila

16) Which respiratory gas takes part in uric acid formation?

17) An animal which always has no father but has a grandfather is the
a) Silk moth
b) Drone of honey bee
c) Housefly
d) Mosquito

18) Queen substance is a pheromone produced by the
a) Honeybee
b) Silk moth
c) Lac insect
d) House fly

19) Blood does not transport oxygen in
a) Cockroach
b) Housefly
c) Mosquito
d) All

20) Sexual dimorphism is found in
a) Earth worms
b) Taenias
c) Cockroaches
d) Leeches

21) The large intestine in cockroaches is represented by the
a) Ileum
b) Colon
c) Crop
d) All

22) The insect helpful in pollination is
a) Musca domestica
b) Bombyx mori
c) Apis dorsata
d) None

23) The flight for fertilization in the honey bee is the
a) Nuptial flight
b) Aestivation flight
c) Hibernation flight
d) None of the above

24) Pearl formation is related with
a) Echinodermata
b) Mollusca
c) Annelida
d) All

25) Devil fish is a common name for the
a) Octopus
b) Sepia
c) Loligo
d) All

26) The siphon jet system for locomotion is found in
a) Pelecypoda
b) Cephalopoda
c) Gastropoda
d) Amphineura

27) A segmented body is absent in
a) Chordata
b) Annelida
c) Arthropoda
d) Mollusca

28) A wood boring mollusc is
a) Patella
b) Teredo
c) Limax
d) Chiton

29) One of the following molluscs acts as the secondary host for fasciola :
a) Pila and Unio
b) Helix and Pila
c) Limax and Helix
d) Lymnaea and Planorbis

30) The osphradium is an organ in molluscs meant for
a) Smell
b) Locomotion
c) Swimming
d) Balancing

31) Parazoa is a group of
a) Sponges
b) Helminthes
c) Starfishes
d) None

32) Choanocyte cells are characteristic of
a) Jelly fishes
b) Sponges
c) Platyhelminthes
d) All the above

33) A canal system is found in
a) Coelenterata
b) Echinodermata
c) Porifera
d) All the above

34) Spicules form the endoskeleton of members of
a) Porifera
b) Coelenterata
c) Echinodermata
d) Arthropoda

35) In leucosolenia, asexual reproduction takes place by
a) Binary fission
b) Sporulation
c) External budding
d) Cyst formation

36) The gametes in sponges develop from
a) Pinacocytes
b) Archeocytes
c) Choanocytes
d) Both b and c

37) The most natural concept of the individuality of sponges based on morphological and physiological aspects is
a) Ostia and canal system
b) Osculum and canal system
c) Ostia and diploblastic body
d) Osculum and chanocytes

38) Which part of the sponge corresponds to the mouth of other animals?
a) Osculum
b) Incurrent canal
c) Ostium
d) Excurrent canal

39) In sponges, the spicules are formed by
a) Choanocytes
b) Chromocytes
c) Scleroblasts
d) Porocytes

40) A dried piece of sponge is composed of
a) Cellulose fibres
b) Silk fibres
c) Spongin fibres
d) Elastic fibres

41) The middle layer of the body wall of sponges is
a) Mesoderm
b) Mesohyl
c) Mesogloea
d) Mesentery

42) The pathway of entry and exit of water in sponges is the
a) Water vascular system
b) Canal system
c) Feeding current
d) Circulating current

43) The exit opening of a sponge is known as the
a) Ostia
b) Osculum
c) Apopyle
d) Prosophyle

44) One of the following is given as a gift in Japan:
a) Euplectella
b) Hyalonema
c) Pleronema
d) Sycon

45) Which is correct regarding sponges?
a) Single mouth and innumerable exit
b) Single exit and innumerable mouths
c) A true coelom
d) Radial symmetry

46) Which of the following animals is sedentary as an adult but active as a larva?
a) Frog
b) Sponge
c) Jelly fish
d) Rat flea

47) The “boring sponge” is
a) Cliona
b) Spongilla
c) Euspongia
d) Hyalonema

48) Many sponges may be bigger than fishes, yet the sponges have no respiratory organs because they
a) Are sedentary
b) Do not need respiratory organs
c) Respire anaerobically
d) Have a highly porous body

49) Endogenous budding is
a) Gemmule formation
b) Gamete formation
c) Gemmation
d) Endomixis

50) The skeleton of a bath sponge is made up of
a) Calcareous spicules
b) Siliceous spicules
c) Elastic spicules
d) Spongin fibres

51) Which of the following is comparable to the coelenteron of Hydra ?
a) Spongocoel
b) Gastrocoel
c) Schizocoel
d) Enterocoel

52) The common bath sponge is
a) Euspongia
b) Euplectella
c) Hylonema
d) Spongilla

53) Spongilla is
a) A marine sponge
b) A freshwater sponge
c) No sponge
d) A parasitic sponge

54) Porocyte cells are exclusively found in
a) Cnidarians
b) Echinoderms
c) Molluscs
d) Sponges

55) The epidermis of a sponge is also known as the
a) Choanoderm
b) Amoeboderm
c) Scleroderm
d) Pinacoderm

56) One of the following is correct for sponges:
a) Planula, cysticercus and Bladder worm
b) Amphiblastula, Hydrula and Medusa
c) Parenchymula, amphiblastula & cnidoblasts
d) Amphiblastula, choanocytes and spicules

57) Name the phylum in which the vascular, respiratory and excretory organs are absent:
a) Annelida
b) Sponges
c) Platyhelminthes
d) Aschelminthes

58) Venus Flower Basket is
a) Euplectella
b) Cliona
c) Hyalonema
d) Hippospongia

59) In sponges, one of the following correspond to the anus of a vertebrate:
a) Ostia
b) Osculum
c) Apophyle
d) Porocyte

60) In sponges totipotent cells are
a) Collencytes
b) Scleroblasts
c) Archeocytes
d) All the above

61) The excretory waste of Leucosolenia and Sycon is
a) Ammonia
b) Urea
c) Guianine
d) Uric acid

62) The hollow blastula of Leucosolenia is called:
a) Steroblastula
b) Coeloblastula
c) Parenchymula
d) Spongoblastula

63) In collar cells
a) One macro and one micronucleus is present
b) Only a single nucleus is present
c) No nucleus is present
d) None of the above

64) One of the following cell types are branched and form a syncytial network:
a) Archeocytes
b) Collenocytes
c) Thesocytes
d) Sclerocytes

65) The maximum power of regeneration is found in
a) Sponges
b) Hydra
c) Starfish
d) None

66) Spicules in sponges are made up of
b) Silica
c) Both
d) None

67) Nutrition in sponges is
a) Halophytic
b) Holozoic
c) Both
d) None

68) One of the following is correct:
a) All sponges are motile
b) Few are motile and rest are sessile
c) Few are sessile and rest are motile
d) All sponges are sessile

69) The choanocyte cell which helps in transferring the sperm is known as a nurse cell. It
a) Develops one more flagella
b) Loses its flagella
c) Remains the same
d) None of the above

70) Nerve cells in sponges
a) Form ganglia
b) Form a network
c) Form a sense organ
d) Are absent

71) Porifera are
a) Diploblastic
b) Triploblastic
c) Acellular
d) None of the above

72) As the canal system becomes complicated the
a) Number of flagella decreases
b) Number of flagella increases
c) Force of drawing the current is increased
d) Both B and C

73) In sponges, the water current is maintained by
a) trophocytes
b) porocytes
c) choanocytes
d) chromocyte

74) Gemmules in sponges are helpful in
a) Digestion
b) Sexual
c) Asexual reproduction
d) Water current relation

75) Sponges are more advanced than protozoa because
a) They have a gastric cavity
b) Of division of labour among the cells
c) They have locomotory organs
d) They show regeneration

76) Organisms with amphiblastula larva are
a) Sycon and leucosolenia
b) Euplectella and sycon
c) Both above
d) None

77) Which one of the following is not a class of phylum porifera?
a) Calcarea
b) Hexactinellida
c) Hydrozoa
d) Demospongia

78) Organisms found in marine habitats with skeletal spicules made of calcium carbonate or silica or spongin fibres and having an intricate system of canals belong to the phylum
a) Coelenterata
b) Echinodermata
c) Porifera
d) Annelida

79) Sponges differ from metazoa in one of the following features; sponges do not contain
a) blood
b) brain
c) cell division
d) body organisation

80) Food is ingested by
a) Porocytes
b) Pinacocytes
c) Choanocytes
d) Scleroblasts

81) Which is not the function of a canal system?
a) Respiration
b) Excretion
c) Ingestion
d) Locomotion

82) Which of the following systems is absent in sponges?
a) Nervous
b) Digestive
c) Excretory
d) Reproductive

83) Spicules of sponges are named according to their
a) Form
b) Size
c) Colour
d) Number of spines

84) Reproductive cells are formed in the multicellular gonads in sponges. These gonads are generally formed from
a) choanocytes
b) archeocytes
c) pinacocytes
d) a and b

85) Sponges have a
a) subcellular level of organisation
b) cellular level of organisation
c) tissue level of organisation
d) organ level of organisation

86) Symmetry in the ascon sponge is
a) asymmetrical
b) bilateral
c) radial
d) biradial

87) The glass sponge belongs to the
a) Hyalospongiae
b) Calcispongiae
c) Demospongiae
d) Sclerospongiae

88) The osculum is characteristic of
a) Cucumaria
b) Starfish
c) Hydra
d) Leucosolenia

89) Bath sponges are formed from
a) Euplectella
b) Dried spongin fibre skeleton
c) Skeleton of spongilla
d) Dry leucosolenia

90) One of the following is applicable to all sponges:
a) Marine habitat
b) Calcareous spicules
c) Radial symmetry
d) High regenerative power

91) Which of the following is a common character of all sponges?
a) Chemical nature of spicules
b) Marine habitat
c) Possessing pores
d) Same type of spongocoel

92) Sponges are originated from
a) Ciliate protozoans
b) Sporozoan protozoans
c) Sarcodine protozoans
d) Choanoflagellate protozoans

93) The internal bud developed under unfavorable conditions in leucosolenia is the
a) Endospore
b) Gemmule
c) Pseudomycelium
d) Blastema

94) Which type of cells are capable of giving rise to other cell types in sponges?
a) Thesocytes
b) Archaeocytes
c) Pinacocytes
d) Collencytes

95) Collar cells are found in
a) Sand worm
b) Acron worm
c) Round worm
d) Sponges

96) The body of leucosolenia is
a) Cylindrical and radially symmetrical
b) Cylindrical and asymmetrical
c) Spherical and symmetrical
d) Elliptical and asymmetrical

97) One of the following cells is not found in sponges:
a) Cnidoblasts
b) Calcoblasts
c) Myocytes
d) Porocytes

98) A sponge differs from all other metazoans in having
a) Nerve cells
b) Absence of blood
c) Numerous mouthlets and one exit
d) None of these

99) Which of the following have “cell aggregate plan “?
a) Sponges
b) Coelenterates
c) Prokaryotes
d) Vertebrates

100) Organization in sponges is
a) Protoplasmic grade
b) Cellular grade
c) Organ grade
d) Tissue grade


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