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NEET • BIOLOGY • ANIMAL KINGDOM
Animal kingdom practice · Hard
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91
Hard
91 of 185
Understanding
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Which of the following requires an invertebrate intermediate host?
I. Dugesia
II. Schistosoma
III. Echinococcus
IV. Ancylostoma
V. Wuchereria
I. Dugesia
II. Schistosoma
III. Echinococcus
IV. Ancylostoma
V. Wuchereria
View answer and explanation
Correct option: B
II and V
Option B (II and V) is correct because Schistosoma and Wuchereria require invertebrate intermediate hosts (snails and mosquitoes, respectively) to complete their life cycles.
92
Hard
92 of 185
Remembering
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Identify the correct pair of birds with a raft-like keel and lacking preen gland and syrinyx
View answer and explanation
Correct option: C
Casuarius and Struthio
Option C (Casuarius and Struthio) is correct because both Casuarius (cassowary) and Struthio (ostrich) have a raft-like keel and lack preen gland and syrinx.
93
Hard
93 of 185
Remembering
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Among the following, colonial insects are
View answer and explanation
Correct option: C
White ants
Option C (White ants) is correct because white ants (termites) are colonial insects, living in organized colonies with division of labor.
94
Hard
94 of 185
Understanding
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Which of the following statement(s) is/are correct regarding class aves?
(i) The forelimbs are modified into wings and the hindlimbs generally have scales and are modified for walking, swimming or clasping the tree branches.
(ii) Heart is completely four-chambered.
(iii) They are warm-blooded (homoiothermous) animals i.e., they are able to maintain a constant body temperature.
(iv) They are oviparous and development is direct.
(i) The forelimbs are modified into wings and the hindlimbs generally have scales and are modified for walking, swimming or clasping the tree branches.
(ii) Heart is completely four-chambered.
(iii) They are warm-blooded (homoiothermous) animals i.e., they are able to maintain a constant body temperature.
(iv) They are oviparous and development is direct.
View answer and explanation
Correct option: D
All of these
Option D (All of these) is correct because all the statements regarding class Aves are accurate: forelimbs modified into wings, four-chambered heart, warm-blooded, and oviparous with direct development.
95
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95 of 185
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Read the Assertion (A) & Reason (R) carefully to mark the correct option out of the options given below.
(A): Birds have Pneumatic bones.
(R): These bones reduces the weight for flight.
(A): Birds have Pneumatic bones.
(R): These bones reduces the weight for flight.
View answer and explanation
Correct option: A
If both assertion & reason is true & reason is the correct explanation of assertion
Option A (If both assertion & reason is true & reason is the correct explanation of assertion) is correct because birds have pneumatic bones to reduce weight, which is essential for flight.
96
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[A]: In Sponges, archaeocytes are totipotent.
[R]: They give rise to all types of amoebocytes and are self replicating.
[R]: They give rise to all types of amoebocytes and are self replicating.
View answer and explanation
Correct option: A
Both A and R are true and R is the correct explanation of A
Option A (Both A and R are true and R is the correct explanation of A) is correct because archaeocytes are indeed totipotent cells in sponges, and their ability to differentiate into various cell types and self-replicate explains their totipotency.
97
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97 of 185
Remembering
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Mammals evolved from therapsid reptiles in Triassic period. The type of skull in these reptiles is
View answer and explanation
Correct option: C
Synapsid skull
Option C (Synapsid skull) is correct because therapsid reptiles, from which mammals evolved, had a synapsid skull characterized by a single temporal fenestra.
98
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98 of 185
Remembering
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Lamprey is placed in the taxon Agnatha which is a
View answer and explanation
Correct option: C
Division
Option D (Super class) is correct because Agnatha represents a superclass within the phylum Chordata, grouping jawless vertebrates.
99
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99 of 185
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[A]: Fasciola is hermaphrodite.
[R]: Gonads are well developed and the male and female genital ducts open into a common genital atrium.
[R]: Gonads are well developed and the male and female genital ducts open into a common genital atrium.
View answer and explanation
Correct option: A
Both A and R are true and R is the correct explanation of A
Option A (Both A and R are true and R is the correct explanation of A) is correct because Fasciola (liver fluke) is indeed hermaphrodite (possessing both male and female reproductive organs), and the reason correctly explains why: its gonads are well-developed, and both male and female genital ducts open into a common genital atrium.
100
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100 of 185
Analyzing
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In which one of the following, the genus name, its two characters and its class are incorrectly matched?
View answer and explanation
Correct option: C
Genus - Torpedo, Two characters - (i) Presence of electric organ, (ii) Poikilothermous, Class - Pisces
Option C is correct because Torpedo is a cartilaginous fish (Chondrichthyes), not a bony fish (Pisces), and Pisces is a general term, not a specific class in this context.
101
Hard
101 of 185
Understanding
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Choose the correct statement associated with ovoviviparous condition
View answer and explanation
Correct option: C
The eggs are heavily yolked eggs
Option C (The eggs are heavily yolked eggs) is correct because ovoviviparous animals retain eggs internally, and the developing embryo relies on the yolk for nourishment.
102
Hard
102 of 185
Understanding
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Which one of the following sets of animals belongs to the same class of a phylum?
View answer and explanation
Correct option: D
Whale, otter, kangaroo
Option D (Whale, otter, kangaroo) is correct because all three animals belong to the class Mammalia.
103
Hard
103 of 185
Remembering
+4 | -1
A temporary, ectoparasitic, nocturnal insect with piercing and sucking type of mouth parts is
View answer and explanation
Correct option: B
Cimex
Option B (Cimex) is correct because Cimex (bed bugs) are temporary, ectoparasitic, nocturnal insects with piercing and sucking mouthparts.
104
Hard
104 of 185
Remembering
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In Hydra, the beaded processes of sensory cells make synapsis with the process of
View answer and explanation
Correct option: A
Nerve cell
Option A (Nerve cell) is correct because sensory cells in Hydra form synapses with nerve cells to transmit signals.
105
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105 of 185
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Select the incorrect statement w.r.t. cyclostomes.
View answer and explanation
Correct option: D
Presence of cartilaginous cranium and bony vertebral column
Option D is correct because cyclostomes possess a cartilaginous cranium and vertebral column, not a bony vertebral column.
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106
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[A]: Chordates have an oxygen carrying pigment called haemoglobin. It is always present in red blood corpuscles.
[R]: Non-chordates have either no haemoglobin or if it is present, it is present in plasma. Non-chordates require very little oxygen as compared to chordates for their body functions.
[R]: Non-chordates have either no haemoglobin or if it is present, it is present in plasma. Non-chordates require very little oxygen as compared to chordates for their body functions.
View answer and explanation
Correct option: A
Both A and R are true and R is the correct explanation of A
Option B (Both A and R are true and R is not the correct explanation of A) is correct because both the assertion and the reason are true, but the reason doesn't fully explain why chordates have hemoglobin in red blood cells.
107
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107 of 185
Remembering
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The arthropods exoskeleton is composed of
View answer and explanation
Correct option: A
Several kinds of polysaccharides
Option B is correct because the arthropod exoskeleton is composed of layers of proteins and a polysaccharide called chitin.
108
Hard
108 of 185
Remembering
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Some vertebrae in birds fuse to form
View answer and explanation
Correct option: B
Synsacrum
Option B (Synsacrum) is correct because the synsacrum is formed by the fusion of some vertebrae in birds, providing support for flight and landing.
109
Hard
109 of 185
Remembering
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Which worm may go very deep in soil up to 60-90 cm and form vertical and complicated burrows for their movement?
View answer and explanation
Correct option: C
Anecic
Option C (Anecic) is correct because Anecic earthworms create deep, vertical burrows and come to the surface to feed.
110
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110 of 185
Understanding
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Select the group of animals that have a protostomous plan
View answer and explanation
Correct option: C
Apis indica, Loligo, Hirudinaria
Option C (Apis indica, Loligo, Hirudinaria) is correct because these animals (honeybee, squid, leech) are protostomes, where the blastopore develops into the mouth.
111
Hard
111 of 185
Remembering
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Torsion of visceral mass is seen in animals belonging to class
View answer and explanation
Correct option: D
Gastropoda
Option D (Gastropoda) is correct because torsion, the twisting of the visceral mass, is a characteristic feature of gastropods (snails and slugs).
112
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112 of 185
Understanding
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A common characteristic of all vertebrates without exception is
View answer and explanation
Correct option: D
The presence of well developed skull
Option A (Amniotes) is correct because Reptiles, Aves, and Mammals are all amniotes, characterized by having an amnion during embryonic development, which allows them to reproduce on land.
113
Hard
113 of 185
Remembering
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The most powerful poison produced by vertebrates is
View answer and explanation
Correct option: D
Batrachotoxin
Option D (Batrachotoxin) is correct because batrachotoxin is an extremely potent neurotoxic alkaloid produced by some frog species and is considered one of the most powerful non-protein poisons known.
114
Hard
114 of 185
Remembering
+4 | -1
Non-chordates show
View answer and explanation
Correct option: D
Absence of hepatic portal system
Option D (Absence of hepatic portal system) is correct because non-chordates lack a hepatic portal system.
115
Hard
115 of 185
Remembering
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Which of the following are not members of sub class-Anura?
View answer and explanation
Correct option: C
Ambystoma and lchthyophis
Option C (Ambystoma and lchthyophis) is correct because Ambystoma is a genus of salamanders (Urodela), and Ichthyophis is a genus of caecilians (Gymnophiona), while Anura includes frogs and toads.
116
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116 of 185
Understanding
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If Hydra is cut transversely in three equal parts, then
View answer and explanation
Correct option: B
Regeneration will occur in all the three parts
Regeneration will occur in all the three parts. Hydra possesses remarkable regenerative capabilities, allowing each section to develop into a complete organism.
117
Hard
117 of 185
Remembering
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Which stage in the life cycle of Taenia solium infects the intermediate host?
View answer and explanation
Correct option: B
Oncosphere
Option A (Hexacanth larva) is correct because the hexacanth larva (oncosphere) is the stage of Taenia solium that infects the intermediate host, typically a pig.
118
Hard
118 of 185
Remembering
+4 | -1
Which of the following is not a Porifera
View answer and explanation
Correct option: B
Spirulina
Option B (Spirulina) is correct because Spirulina is a cyanobacterium (blue-green algae), not a Porifera (sponge).
119
Hard
119 of 185
Understanding
+4 | -1
Insects are different from spiders in which of the following features
View answer and explanation
Correct option: C
Number of body divisions, number of leg, absence or presence of spinnerels
The correct answer is C (Number of body divisions, number of leg, absence or presence of spinnerels) because insects have three body divisions and six legs, while spiders have two body divisions and eight legs, and spiders possess spinnerets.
120
Hard
120 of 185
Remembering
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Which of the following are absent in snakes?
View answer and explanation
Correct option: D
All of these
Option D (All of these) is correct because snakes lack pectoral girdle, urinary bladder, and sternum.
Revision notes and key takeaways
Review ANIMAL KINGDOM in your textbook or class notes, then use this set to check your understanding.
Showing 91-120 of 185 questions