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Zoology
Animal Kingdom
128 questions · Click an option and press Check Answer to reveal the result
1
In Urochordata, the notochord is present:
A
Throughout life from head to tail
B
Only in larval tail
C
Only in adult stage
D
Only during embryonic stage and replaced by vertebrae
2
Which is not correct about eucoelomate condition?
A
It is a body cavity lined by mesoderm
B
It is found in Annelids, Arthropods and Molluscs
C
It is found in Aschelminthes
D
It is found in Echinoderms, Hemichordates and Chordates
3
Cnidaria shows:
A
Metamorphosis
B
Regeneration
C
Alternation of generation
D
Bioluminescence
4
Which of the following is a characteristic feature of mammals?
A
Mammary glands
B
Presence of hair on skin
C
Pinna (external ear)
D
All of the above
5
In Urochordata, the notochord is present:
A
Throughout life from head to tail
B
Only in larval tail
C
Only in adult stage
D
Only during embryonic stage and replaced by vertebrae
6
In hemichordates, body is divided into:
A
Head, thorax, abdomen
B
Head, foot, visceral hump
C
Proboscis, collar, trunk
D
Cephalothorax and abdomen
7
Regarding the characteristics of Phylum Aschelminthes, choose the following statements:
A. They are often called roundworms because their body is circular in cross-section.
B. An excretory tube removes body wastes from the body cavity through the excretory pore.
C. The alimentary canal is complete with a well-developed muscular pharynx.
D. They are dioecious and often males are longer than females.
E. Fertilization is typically external, and development is always direct.
Which of the above statements are correct?
A
A, B, C and E
B
A, C, D and E
C
A, B and C only
D
B, C and D only
8
Given two statements: Statement I: Leeches are monoecious Statement II: Pristis can regulate body temperature
A
I correct, II incorrect
B
I incorrect, II correct
C
Both correct
D
Both incorrect
9
Air bladder which regulates buoyancy is found in:
A
Chondrichthyes
B
Osteichthyes
C
Cyclostomata
D
Amphibia
10
Liver fluke is also known as:
A
Laccifer
B
Locust
C
Fasciola
D
Pinctada
11
Identify the given animal and select the incorrect option regarding this animal. 
A
Absence of blood vessels
B
Cranium and vertebral column are cartilaginous
C
Presence of unpaired fins
D
Shows indirect development
12
Which of the following is incorrect for closed circulatory system?
A
Present in earthworm
B
Capillaries present
C
Blood flows through vessels
D
Tissues directly bathed in blood
13
Poikilotherms are animals that:
A
Can maintain constant body temperature
B
Lack the capacity to regulate body temperature
C
Live only in water
D
Hibernate in winter
14
The specialized cells in sponges that line the spongocoel and canals are:
A
Choanocytes (Collar cells)
B
Cnidocytes
C
Nematocytes
D
Solenocytes
15
Which of the following is true about Porifera?
A
Digestion is intracellular
B
Body supported by spicules
C
Asymmetrical body
D
All of these
16
'Comb plates' for locomotion are found in:
A
Cnidaria
B
Ctenophora
C
Platyhelminthes
D
Echinodermata
17
The heart of amphibians and most reptiles is:
A
2-chambered
B
3-chambered
C
4-chambered
D
Single chambered
18
The second largest phylum is:
A
Annelida
B
Mollusca
C
Hemichordata
D
Echinodermata
19
Bioluminescence is well-marked in:
A
Sponges
B
Cnidarians
C
Ctenophores
D
Flatworms
20
Which of the following is a characteristic of Annelids?
A
Pseudocoelom
B
Metameric segmentation
C
Jointed appendages
D
Water vascular system
21
Which of the following pairs belong to class Osteichthyes?
A
Pristis and Carcharodon
B
Scoliodon and Pterophyllum
C
Labeo and Catla
D
Clarias and Scoliodon
22
The skeleton of sponges is made up of:
A
Bones and cartilage
B
Spicules or spongin fibres
C
Chitin
D
Calcium carbonate shells
23
Excretion in annelids occurs via:
A
Malpighian tubules
B
Flame cells
C
Nephridia
D
Proboscis gland
24
Which of the following is a flightless bird?
A
Neophron (Vulture)
B
Struthio (Ostrich)
C
Psittacula (Parrot)
D
Columba (Pigeon)
25
Spongilla is :-
A
Bath sponge
B
Fresh water sponge
C
Urn sponge
D
Glass sponge
26
Reptiles are characterized by:
A
Moist skin without scales
B
Dry and cornified skin with scales or scutes
C
External ear opening
D
Being homeotherms
27
Which of the following Cnidarians exhibits metagenesis (alternation of generation)?
A
Hydra
B
Adamsia
C
Obelia
D
Aurelia
28
The gastro-vascular cavity in Cnidarians has a single opening called:
A
Osculum
B
Hypostome
C
Mouth
D
Anus
29
In which of the following open circulatory system is present ?
Fishes, Arthropods, Mollusca, Amphibians Reptiles, Aves, Mammals, Annelids
A
3
B
2
C
4
D
5
30
Which of the following groups exhibit radial symmetry?
A
Fishes
B
Molluscs
C
Star fishes
D
Sponges
31
Stinging capsules called nematocytes are found in:
A
Porifera
B
Cnidaria
C
Ctenophora
D
Annelida
32
Which of the following is incorrect ?
A
Aves posses poor olfactory system
B
Aves are poikilothermic
C
Aves bones are hollow with air cavities
D
Aves have sexes separate, fertilization is internal, oviparous with direct development
33
Identify A, B, C and D marked in the following chart:
The correct option is:-
A
A : Tusk shell; B : A fish; C : Echinus; D : Meandrina
B
A : Ascaris; B : A fish; C : Ophiura; D : Meandrina
C
A : Cuttlefish; B : An insect; C : Ophiura; D : Meandrina
D
A : Ascaris; B : An insect; C : Ophiura; D : Meandrina
34
Statement I : Chordates are characterized by the presence of a notochord.
Statement II : All chordates have vertebral column. In light of the above statements, choose the most appropriate answer from the options given below:
A
Statement I is true but Statement II is false
B
Statement II is false but Statement I is true
C
Both Statement I and Statement II are true
D
Both Statement I and Statement II are false
35
Which of the following is a 'living fossil' arthropod?
A
Limulus (King crab)
B
Locusta (Locust)
C
Apis (Honey bee)
D
Bombyx (Silkworm)
36
The canal system is a characteristic feature of:
A
Cnidaria
B
Porifera
C
Ctenophora
D
Platyhelminthes
37
Assertion: Aschelminthes are pseudocoelomates Reason: Mesoderm present as scattered pouches
A
A true, R false
B
A false, R true
C
Both true and correct explanation
D
Both true but not explanation
38
Given two statements: Statement I: Medusae produce polyps asexually Statement II: Radula present in mollusca
A
I correct, II incorrect
B
I incorrect, II correct
C
Both correct
D
Both incorrect
39
Cellular level of organisation is present in:
A
Cnidaria
B
Ctenophora
C
Platyhelminthes
D
Porifera
40
Which is not a fundamental chordate character?
A
Notochord
B
Dorsal hollow nerve cord
C
Paired pharyngeal gill slits
D
Ventral heart
41
Which of the following groups exhibit radial symmetry?
A
Fishes
B
Molluscs
C
Star fishes
D
Sponges
42
In Arthropods, excretion takes place through:
A
Nephridia
B
Malpighian tubules
C
Flame cells
D
Gills
43
Read the following statements:
A
Phylum Chordata has three subphyla
B
Urochordata has notochord throughout life
C
Cyclostomes migrate for spawning
D
Carcharodon has ventral mouth
44
Hemichordates were earlier placed as a subphylum under Chordata but are now a separate phylum because:
A
They have no heart
B
They lack a true notochord
C
They are only marine
D
They show radial symmetry
45
The gastro-vascular cavity in Cnidarians has a single opening called:
A
Osculum
B
Hypostome
C
Mouth
D
Anus
46
Which one of the following statement is not correct?
A
Mesoglea is present in between ectoderm and endoderm in Obelia
B
Radial symmetry is found in star fishes
C
Fasciola (Liver fluke) is a pseudocoelomate animal
D
Taenia (Tapeworm) is a triploblastic animal
47
Fill in the blanks marked in the classification table from the choices in the box with respect to A, B, C, D, E and F choose the correct option.
I. Pisces II. Osteichthyes III. Agnatha IV. Gnathostomata V. Chondrichthyes VI. Cyclostomata
A
A-VI, B-I, C-V, D-II, E-III, F-IV
B
A-III, B-IV, C-VI, D-I, E-V, F-II
C
A-I, B-VI, C-IV, D-II, E-III, F-V
D
A-IV, B-V, C-III, D-II, E-VI, F-I
48
All are monoecious except:
A
Taenia
B
Ascaris
C
Fasciola
D
Pheretima
49
Triploblastic, acoelomate, bilateral symmetry and most in parasitic forms. The above description is characteristic of phylum :
A
Protozoa
B
Annelida
C
Nematoda
D
Platyhelminthes
50
Bilateral symmetry is observed in:
A
Flatworms to chordates except adult molluscs
B
Flatworms to chordates except larval molluscs
C
Flatworms to chordates except adult echinoderms
D
Flatworms to chordates except larval echinoderms
51
Which of the following lacks an excretory system?
A
Arthropoda
B
Mollusca
C
Echinodermata
D
Annelida
52
The specialized cells in sponges that line the spongocoel and canals are:
A
Choanocytes (Collar cells)
B
Cnidocytes
C
Nematocytes
D
Solenocytes
53
The largest phylum of Animal Kingdom is:
A
Mollusca
B
Chordata
C
Arthropoda
D
Echinodermata
54
Match the following: (a) Pseudocoelomates (b) Asymmetrical (c) Metamerism (d) Diploblastic 1. Absence of mesoderm 2. Leech 3. Porifera 4. Ascaris
A
a-4, b-3, c-2, d-1
B
a-3, b-4, c-1, d-2
C
a-3, b-4, c-2, d-1
D
a-4, b-3, c-1, d-2
55
Water vascular system is the most distinctive feature of:
A
Mollusca
B
Echinodermata
C
Hemichordata
D
Chordata
56
The heart of amphibians and most reptiles is:
A
2-chambered
B
3-chambered
C
4-chambered
D
Single chambered
57
Which of the following is a dioecious (unisexual) flatworm?
A
Taenia (Tapeworm)
B
Fasciola (Liver fluke)
C
Schistosoma (Blood fluke)
D
Planaria
58
The rasping organ for feeding in molluscs is called:
A
Radula
B
Mantle
C
Ctenidia
D
Operculum
59
Which is not correct about eucoelomate condition?
A
It is a body cavity lined by mesoderm
B
It is found in Annelids, Arthropods and Molluscs
C
It is found in Aschelminthes
D
It is found in Echinoderms, Hemichordates and Chordates
60
'Comb plates' for locomotion are found in:
A
Cnidaria
B
Ctenophora
C
Platyhelminthes
D
Echinodermata
61
Identify the correct matching
A
Triploblastic : The developing embryo has a third germinal layer mesoglea present in between the ectoderm and endoderm in platyhelminthes.
B
Notochord : It is a endo-mesodermally derived rod-like structure present in chordates
C
Bilateral symmetry : The body can be divided into identical left and right halves in many planes in Annelids.
D
Segmentation : Found in Annelids.
62
Mammals are viviparous (give birth to young) except:
A
Platypus
B
Macropus (Kangaroo)
C
Pteropus (Flying fox)
D
Delphinus (Dolphin)
63
Poikilotherms are animals that:
A
Can maintain constant body temperature
B
Lack the capacity to regulate body temperature
C
Live only in water
D
Hibernate in winter
64
The presence of a mid-ventral heart is a character of:
A
Non-chordates
B
Chordates
C
Both
D
None
65
Which phylum has nematocysts?
A
Ctenophora
B
Platyhelminthes
C
Cnidaria
D
Annelida
66
Operculum (gill cover) is absent in:
A
Labeo (Rohu)
B
Catla
C
Scoliodon (Dogfish)
D
Exocoetus (Flying fish)
67
Which of the following is correct about Cnidarians?
A
Asymmetrical animals
B
Organ level organisation
C
Triploblastic
D
Polyp and medusa forms present
68
The largest phylum of Animal Kingdom is:
A
Mollusca
B
Chordata
C
Arthropoda
D
Echinodermata
69
Stinging capsules called nematocytes are found in:
A
Porifera
B
Cnidaria
C
Ctenophora
D
Annelida
70
How many belong to Urochordata? Salpa, Chaetopleura, Loligo, Echinus
A
Four
B
Three
C
Two
D
One
71
Excretory organs in Echinoderms are :-
A
Specialized & well developed
B
Normal
C
Absent
D
None of these
72
Select the correct option in given table : 
A
1 and 2
B
2 only
C
1 and 3
D
4 only
73
The rasping organ for feeding in molluscs is called:
A
Radula
B
Mantle
C
Ctenidia
D
Operculum
74
The presence of a mid-ventral heart is a character of:
A
Non-chordates
B
Chordates
C
Both
D
None
75
Flame cells (Protonephridia) are the excretory structures in:
A
Aschelminthes
B
Platyhelminthes
C
Annelida
D
Arthropoda
76
Cyclostomes are characterized by:
A
Jaws and paired fins
B
Sucking and circular mouth without jaws
C
Scales and operculum
D
3-chambered heart
77
Assertion: Bioluminescence due to nematocysts Reason: Seen in ctenophores
A
A true, R false
B
A false, R true
C
Both true
D
Both true but not explanation
78
Which of the following is a 'living fossil' arthropod?
A
Limulus (King crab)
B
Locusta (Locust)
C
Apis (Honey bee)
D
Bombyx (Silkworm)
79
Which of the following statement is correct?
A
All bony fishes have operculum covering gills
B
All sponges are marine
C
All mammals are viviparous
D
All reptiles have 3 chambered heart
80
Which of the following is correct about notochord?
A
Ectodermal
B
Rod-like structure
C
Ventral position
D
Present from porifera to echinodermata
81
The skeleton of sponges is made up of:
A
Bones and cartilage
B
Spicules or spongin fibres
C
Chitin
D
Calcium carbonate shells
82
Hemichordates were earlier placed as a subphylum under Chordata but are now a separate phylum because:
A
They have no heart
B
They lack a true notochord
C
They are only marine
D
They show radial symmetry
83
The canal system is a characteristic feature of:
A
Cnidaria
B
Porifera
C
Ctenophora
D
Platyhelminthes
84
Which is not a fundamental chordate character?
A
Notochord
B
Dorsal hollow nerve cord
C
Paired pharyngeal gill slits
D
Ventral heart
85
The body of Balanoglossus consists of:
A
Head, thorax and abdomen
B
Proboscis, collar and long trunk
C
Mantle, foot and visceral hump
D
Cephalothorax and abdomen
86
Organ level organisation seen in:
A
Cnidaria
B
Ctenophora
C
Platyhelminthes
D
Porifera
87
Which of the following is a flightless bird?
A
Neophron (Vulture)
B
Struthio (Ostrich)
C
Psittacula (Parrot)
D
Columba (Pigeon)
88
Match the Following: (a) Limbless reptile (b) Jawless vertebrate (c) Limbless amphibian (d) Flightless bird 1. Lamprey 2. Ichthyophis 3. Naja (Cobra) 4. Struthio (Ostrich)
A
a-3, b-1, c-2, d-4
B
a-2, b-1, c-3, d-4
C
a-3, b-2, c-1, d-4
D
a-1, b-3, c-2, d-4
89
All belong to same class except:
A
Betta, Pristis
B
Delphinus, Elephas
C
Torpedo, Trygon
D
Crocodilus, Naja
90
Which of the following Cnidarians exhibits metagenesis (alternation of generation)?
A
Hydra
B
Adamsia
C
Obelia
D
Aurelia
91
A common chamber for digestive, reproductive, and urinary tracts in amphibians is:
A
Cloaca
B
Rectum
C
Anus
D
Bladder
92
In Arthropods, excretion takes place through:
A
Nephridia
B
Malpighian tubules
C
Flame cells
D
Gills
93
Aschelminthes are commonly called roundworms because:
A
They have a circular cross-section
B
They live in round burrows
C
They have round heads
D
They move in circles
94
Which of the following is a dioecious (unisexual) flatworm?
A
Taenia (Tapeworm)
B
Fasciola (Liver fluke)
C
Schistosoma (Blood fluke)
D
Planaria
95
Match the Following: (a) Limbless reptile (b) Jawless vertebrate (c) Limbless amphibian (d) Flightless bird 1. Lamprey 2. Ichthyophis 3. Naja (Cobra) 4. Struthio (Ostrich)
A
a-3, b-1, c-2, d-4
B
a-2, b-1, c-3, d-4
C
a-3, b-2, c-1, d-4
D
a-1, b-3, c-2, d-4
96
Match the columns I and II, and choose the correct combination from the options given.
| Column I | Column II |
|---|---|
AEchinus | iBrittle star |
BCucumaria | iiStar fish |
CAntedon | iiiSea urchin |
DOphiura | ivSea cucumber |
EAsterias | vSea lily |
A
A-iv, B-iii, C-v, D-ii, E-i
B
A-iii, B-iv, C-v, D-i, E-ii
C
A-iii, B-iv, C-v, D-ii, E-i
D
A-iii, B-v, C-iv, D-i, E-ii
97
Bioluminescence is well-marked in:
A
Sponges
B
Cnidarians
C
Ctenophores
D
Flatworms
98
Which of the following is a characteristic of Annelids?
A
Pseudocoelom
B
Metameric segmentation
C
Jointed appendages
D
Water vascular system
99
Tissue level of organization is found in:
A
Sponges and cnidarians
B
Cnidarians and comb jellies
C
Comb jellies and sponges
D
Sponges, cnidarians and comb jellies
100
Match the following:
A
Collar cells — Porifera
B
Flattened body — Platyhelminthes
C
Gastrovascular cavity — Cnidaria
D
Statocysts — Arthropoda
101
Which group consists only of cnidarians?
A
Aplysia, Hydra, Gorgonia
B
Hydra, Obelia, Echinus
C
Hydra, Obelia, Adamsia, Physalia
D
Scypha, Hydra, Adamsia
102
How many of the following are true coelomates? Annelids, Molluscs, Hemichordates, Echinoderms, Ctenophora
A
Four
B
Three
C
Two
D
One
103
Given below are two statement:
Statement-I : Hemichordata was earlier considered as subphylum under nonchordata but now it is placed as a separate phylum under chordata.
Statement-II : Body of hemichordates composed of anterior proboscis, a collar and a long trunk.
In the light of the above statements, choose the most appropriate answer from the options given below-
A
Both Statement I and Statement II are incorrect.
B
Statement I is correct but Statement II is incorrect.
C
Statement I is incorrect but Statement II is correct.
D
Both Statement I and Statement II are correct.
104
Which of the following statements about subphylum Vertebrata are true?
(a) Vertebrates have a dorsal hollow nerve cord.
(b) They exhibit a post-anal tail.
(c) Vertebral column replaces the notochord in adults.
(d) Heart is dorsal and three-chambered.
(e) Vertebrates have paired appendages.
Choose the correct answer from the options given below:
A
a, b, d only
B
a, b, c, e only
C
a, b, c, d only
D
a, b, c, d, e
105
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: In Ctenoplana, digestion is both extracellular and intracellular.
Reason R: In Ctenophores, fertilization is external with direct development.
In the light of the above statements, choose the correct answer from the options given below:
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true, but R is false.
D
A is false, but R is true.
106
Flame cells (Protonephridia) are the excretory structures in:
A
Aschelminthes
B
Platyhelminthes
C
Annelida
D
Arthropoda
107
Operculum (gill cover) is absent in:
A
Labeo (Rohu)
B
Catla
C
Scoliodon (Dogfish)
D
Exocoetus (Flying fish)
108
Which of the following groups have 2 germinal layers (Diploblastic)?
A
Sycon, Fasciola, Pheretima
B
Physalia, Hydra, Pleurobrachia
C
Adamsia, Ascaris, Asterias
D
Leucosolenia, Corals, Sepia
109
The body of Balanoglossus consists of:
A
Head, thorax and abdomen
B
Proboscis, collar and long trunk
C
Mantle, foot and visceral hump
D
Cephalothorax and abdomen
110
Choose the correctly paired match from the following:
A
Petromyzon — Hagfish
B
Pristis — Saw fish
C
Carcharodon — Dog fish
D
Exocoetus — Fighting fish
111
Which of the following groups have 2 germinal layers (Diploblastic)?
A
Sycon, Fasciola, Pheretima
B
Physalia, Hydra, Pleurobrachia
C
Adamsia, Ascaris, Asterias
D
Leucosolenia, Corals, Sepia
112
Diploblastic and acoelomate animals belong to:
A
Ctenophora
B
Platyhelminthes
C
Aschelminthes
D
Annelida
113
The second largest phylum is:
A
Annelida
B
Mollusca
C
Hemichordata
D
Echinodermata
114
Incorrect matching:
A
Naja — Cobra
B
Bangarus — Krait
C
Calotes — Viper
D
Hemidactylus — Wall lizard
115
Chondrichthyes have a skeleton made of:
A
Bone
B
Cartilage
C
Chitin
D
Calcium carbonate
116
A common chamber for digestive, reproductive, and urinary tracts in amphibians is:
A
Cloaca
B
Rectum
C
Anus
D
Bladder
117
Which of the following is a characteristic feature of mammals?
A
Mammary glands
B
Presence of hair on skin
C
Pinna (external ear)
D
All of the above
118
Reptiles are characterized by:
A
Moist skin without scales
B
Dry and cornified skin with scales or scutes
C
External ear opening
D
Being homeotherms
119
Mammals are viviparous (give birth to young) except:
A
Platypus
B
Macropus (Kangaroo)
C
Pteropus (Flying fox)
D
Delphinus (Dolphin)
120
Air bladder which regulates buoyancy is found in:
A
Chondrichthyes
B
Osteichthyes
C
Cyclostomata
D
Amphibia
121
Aschelminthes are commonly called roundworms because:
A
They have a circular cross-section
B
They live in round burrows
C
They have round heads
D
They move in circles
122
Which of the following lacks an excretory system?
A
Arthropoda
B
Mollusca
C
Echinodermata
D
Annelida
123
Chondrichthyes have a skeleton made of:
A
Bone
B
Cartilage
C
Chitin
D
Calcium carbonate
124
Cyclostomes are characterized by:
A
Jaws and paired fins
B
Sucking and circular mouth without jaws
C
Scales and operculum
D
3-chambered heart
125
Water vascular system is the most distinctive feature of:
A
Mollusca
B
Echinodermata
C
Hemichordata
D
Chordata
126
Identify the number of organisms from the box given below which are hermaphrodites and have internal fertilisation.
Pleurabranchia, Nereis, Lacifer, Spongilla, Fasciola
A
Six
B
Two
C
Four
D
Three
127
Central cavity in sponges is:
A
Ostia
B
Spongocoel
C
Osculum
D
Spicules
128
In which of the following paris of animals, digestion is intracellular and water is taken through pores in the body ?
A
Euspongia and Spongilla
B
Hydra and Physalia
C
Herdmania and Balanoglossus
D
Pleurobrachia and Scypha
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