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NEET • BIOLOGY • ANIMAL KINGDOM
Animal kingdom practice · Hard
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151
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[A]: Leaches secrete hirudin from their salivary glands.
[R]: Hirudin is anticoagulating agent.
[R]: Hirudin is anticoagulating agent.
View answer and explanation
Correct option: B
Both A and R are true and R is not the correct explanation of A
Option A (Both A and R are true and R is the correct explanation of A) is correct because leeches do secrete hirudin from their salivary glands, and hirudin is indeed an anticoagulant agent, preventing blood clotting.
152
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Nematoblasts are formed by
View answer and explanation
Correct option: A
Interstitial cells
Option A (Interstitial cells) is correct because nematoblasts, the precursor cells to cnidocytes, are derived from interstitial cells, which are undifferentiated stem cells in cnidarians.
153
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[A]: Sphenodon is referred to as a living fossil.
[R]: It has retained many primitive characteristics of fossil or stem reptiles belonging to permain period.
[R]: It has retained many primitive characteristics of fossil or stem reptiles belonging to permain period.
View answer and explanation
Correct option: A
Both A and R are true and R is the correct explanation of A
Option A is correct because Sphenodon, also known as the Tuatara, is indeed a living fossil, and the reason provided accurately describes its retention of primitive characteristics from the Permian period.
154
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In insects which feed on nectar, the proboscis is formed by
View answer and explanation
Correct option: C
Glossa
Option C is correct because in nectar-feeding insects, the proboscis is formed by the glossa.
155
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From the following fishes, identify the one with a aglomerular kidney.
View answer and explanation
Correct option: D
Exocoetus
Option D (Exocoetus) is correct because Exocoetus (flying fish) is known to have an aglomerular kidney.
156
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During its life cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages, respectively
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Correct option: B
Miracidium and metacercaria
Option B (Miracidium and metacercaria) is correct because the miracidium larva infects the snail (intermediate host), and the metacercaria infects the primary host (mammal).
157
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On the basis of organisation, animals are grouped into:
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Correct option: B
Protozoa and metazoa
Option D (Parazoa and metazoa) is correct because animals are broadly grouped into Parazoa (lacking true tissues) and Metazoa (having true tissues).
158
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Mollusc, which does not have ink gland is
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Correct option: A
Pila
Option A (Pila) is correct because Pila (apple snail) does not have an ink gland, unlike cephalopods like Loligo, Sepia, and Octopus.
159
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Which one of the following is a representative of protochordate
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Correct option: C
Salpa
Option C (Salpa) is correct because Salpa is a urochordate, which is a subphylum of protochordates.
160
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S-I: Urochordates & Cephalochordates are included under the group Acraniata.
S-II: Both of these subphyla are devoid of cranium.
S-II: Both of these subphyla are devoid of cranium.
View answer and explanation
Correct option: A
Both (I) and (II) are true
Option A (Both (I) and (II) are true) is correct because Urochordates and Cephalochordates are included under the group Acraniata, and both subphyla lack a cranium.
161
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Which type of kidneys are found in amphibians?
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Correct option: B
Mesonephric
Option B (Mesonephric) is correct because amphibians have mesonephric kidneys as adults, which are more advanced than pronephric kidneys but less advanced than metanephric kidneys.
162
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Sperms in Ascaris are characterized by one unusual feature, i.e.,
View answer and explanation
Correct option: B
Lack of flagellum
Option B (Lack of flagellum) is correct because Ascaris sperms are unique in lacking a flagellum and move by amoeboid movement.
163
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A list of animals is given below. Identify the animals with open circulatory system and choose the correct answer
I.Ascidia
II.Cockroach
III.Earthworm
IV.Prawn
V.Silverfish
VI.Snail
VII.Squid
I.Ascidia
II.Cockroach
III.Earthworm
IV.Prawn
V.Silverfish
VI.Snail
VII.Squid
View answer and explanation
Correct option: D
II, IV, V and VI
Option D (II, IV, V and VI) is correct because Cockroach, Prawn, Silverfish, and Snail all have open circulatory systems.
164
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Coelom is important because
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Correct option: D
All of the above
Option D (All of the above) is correct because the coelom allows internal organ growth, separates the gut from the body wall muscles, and has evolutionary significance.
165
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Which of the following animals sows discontinuous distribution?
View answer and explanation
Correct option: C
Lung fish
Option C (Lung fish) is correct because lungfish exhibit discontinuous distribution, found in isolated freshwater habitats in South America, Africa, and Australia, reflecting ancient Gondwanan connections.
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Pick the odd pair out
View answer and explanation
Correct option: B
Tissue level: Aschelminthes
Option B (Tissue level: Aschelminthes) is the odd pair because Aschelminthes (roundworms) have an organ-system level of organization, not a tissue level.
167
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Which of the following statements are true/false?
I.In torpedo, the electric organs are capable of generating strong electric shock to paralyze the prey
II.Bony fishes use pectoral, pelvic, dorsal, anal and caudal fins in swimming
III.Amphibian skin is moist and has thick scales
IV.Birds are poikilothermous animals
V.The most unique mammalian characteristic is the presence of milk producing mammary glands by which the young ones are nourished
I.In torpedo, the electric organs are capable of generating strong electric shock to paralyze the prey
II.Bony fishes use pectoral, pelvic, dorsal, anal and caudal fins in swimming
III.Amphibian skin is moist and has thick scales
IV.Birds are poikilothermous animals
V.The most unique mammalian characteristic is the presence of milk producing mammary glands by which the young ones are nourished
View answer and explanation
Correct option: B
I, II and V and true; III and IV are false
Option B (I, II and V and true; III and IV are false) is correct because torpedoes use electric organs to paralyze prey, bony fishes use various fins for swimming, mammals have mammary glands, amphibian skin is not thick and scaly, and birds are homeothermic (not poikilothermic).
168
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Schistosoma is a parasite found in
View answer and explanation
Correct option: D
Blood
Option D (Blood) is correct because Schistosoma, also known as blood flukes, are parasitic flatworms that reside in the blood vessels of their hosts.
169
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In bony ventebrates, the laying down of none is often preceded by the presence of
View answer and explanation
Correct option: C
Cartilage
Option C (Cartilage) is correct because in bony vertebrates, bone formation (ossification) often occurs by replacing a pre-existing cartilage model.
170
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[A]: Presence of alimentary canal would not have suited the mode of life of tapeworm.
[R]: It would have rendered impossible the process of apolysis indispensable for it.
[R]: It would have rendered impossible the process of apolysis indispensable for it.
View answer and explanation
Correct option: A
Both A and R are true and R is the correct explanation of A
Option A is correct because the assertion that the presence of an alimentary canal would not suit the tapeworm's mode of life is true, and the reason that it would render impossible the process of apolysis indispensable for it correctly explains why.
171
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Tube feet is the locomotory organ in
View answer and explanation
Correct option: A
Star fish
Option A (Star fish) is correct because tube feet are characteristic locomotory organs of echinoderms like starfish.
172
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The Indian salamander is
View answer and explanation
Correct option: B
Tylototriton
Option B (Tylototriton) is correct because Tylototriton is a genus of salamanders, and some species within this genus are found in India.
173
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Why water canal system present only in poriferans
View answer and explanation
Correct option: D
These are immovable
Option D (These are immovable) is correct because the water canal system in poriferans is essential for filter feeding and gas exchange since they are sessile (immovable).
174
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What distinguishes an insect from a crustacean?
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Correct option: A
Number of appendages
The correct answer is A (Number of appendages) because insects have six legs (three pairs), while crustaceans have ten or more appendages.
175
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Phylum-Ctenophora is divided into following classes
View answer and explanation
Correct option: C
Tentaculata and Nuda
Option C (Tentaculata and Nuda) is correct because the phylum Ctenophora is divided into two classes: Tentaculata, which possess tentacles, and Nuda, which lack tentacles.
176
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In the heart of rabbit, the mitral valve is attached to the papillary muscles by
View answer and explanation
Correct option: A
Chordae tendinae
Option A (Chordae tendinae) is correct because the mitral valve in the heart of a rabbit is attached to the papillary muscles by chordae tendinae.
177
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The pair of amphibians found in Indian peninsula is
View answer and explanation
Correct option: B
Tyloto triton and Ichthyophis
Option B (Tyloto triton and Ichthyophis) is correct because these are two genera of amphibians found in the Indian peninsula.
178
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Which of the following group will be amniotes?
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Correct option: C
Anguis – Eudynamis – Pteropuss
Option C (Anguis – Eudynamis – Pteropuss) is correct because Anguis (a reptile), Eudynamis (a bird), and Pteropus (a mammal) are all amniotes, meaning their embryos develop within an amnion.
179
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Choose the correct option with reference to Ascaris.
View answer and explanation
Correct option: C
Development and moulting takes place in the alveoli of lungs
Option C (Development and moulting takes place in the alveoli of lungs) is correct because Ascaris larvae migrate to the lungs, where they undergo development and moulting before being coughed up and swallowed.
180
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Type of symmetry with only one central axis but many planes is
View answer and explanation
Correct option: D
Radial symmetry
Option D (Radial symmetry) is correct because radial symmetry has multiple planes passing through a central axis that can divide the organism into similar halves.
Revision notes and key takeaways
Review ANIMAL KINGDOM in your textbook or class notes, then use this set to check your understanding.
Showing 151-180 of 185 questions