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NEET • BIOLOGY • ANIMAL KINGDOM
Animal kingdom practice · Hard
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31
Hard
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Remembering
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Hydra captures the victim by injecting the chemical
View answer and explanation
Correct option: B
Hypnotoxin
Option B (Hypnotoxin) is correct because Hydra uses nematocysts to inject hypnotoxin into its prey, paralyzing or killing them for capture.
32
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In housefly, pseudotracheae is found in
View answer and explanation
Correct option: C
Labellum
Option C is correct because pseudotracheae are found in the labellum of the housefly.
33
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Understanding
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Which of the following statements are true/false?
I. Cell aggregate body plan is found in phylum-Platyhelminthes
II. Radial symmetry is the most common symmetry found in animals
III. Pseudocoelom is only found in phylum-Aschelminthes
IV. All triploblastic animals have a true coelom
V. Haemocoel is sometimes observed in animals belonging to phylum-Platyhelminthes
I. Cell aggregate body plan is found in phylum-Platyhelminthes
II. Radial symmetry is the most common symmetry found in animals
III. Pseudocoelom is only found in phylum-Aschelminthes
IV. All triploblastic animals have a true coelom
V. Haemocoel is sometimes observed in animals belonging to phylum-Platyhelminthes
View answer and explanation
Correct option: D
I, II, IV and V are false, only III is true
Option D (I, II, IV and V are false, only III is true) is correct because only statement III is accurate: Pseudocoelom is indeed only found in phylum-Aschelminthes.
34
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34 of 185
Remembering
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Engulfing of food either in solid or liquid is called
View answer and explanation
Correct option: B
Holozoic nutrition
Option B (Holozoic nutrition) is correct because holozoic nutrition involves the ingestion of solid or liquid food particles.
35
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Understanding
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[A]: In reptiles, lizards show autotomy.
[R]: Tail of most lizards is easily broken off when threatened or seized by a predator.
[R]: Tail of most lizards is easily broken off when threatened or seized by a predator.
View answer and explanation
Correct option: B
Both A and R are true and R is not the correct explanation of A
Option B is correct because while both the assertion and reason are true, the reason doesn't fully explain autotomy in lizards; it's more related to specialized fracture planes in the tail vertebrae.
36
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Remembering
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A transverse section of Pheretima taken through the 10th segment is observed in microscope. Which of the following structures can be observed in the section?
View answer and explanation
Correct option: A
Stomach, dorsal blood vessel, ventral blood vessel, supraoesophageal vessel, anterior loops, ring vessel and micronephridia
Option A (Stomach, dorsal blood vessel, ventral blood vessel, supraoesophageal vessel, anterior loops, ring vessel and micronephridia) is correct because these structures are present in the 10th segment of Pheretima.
37
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Understanding
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Which of the following statement(s) is/are correct regarding phylum coelenterata?
(i) They are aquatic, mostly marine, sessile or free- swimming, radially symmetrical animals.
(ii) They have a central gastro-vascular cavity with a single opening called hypostome.
(iii) Digestion is extracellular and intracellular.
(iv) Examples are Sycon, Spongilla and Euspongia.
(i) They are aquatic, mostly marine, sessile or free- swimming, radially symmetrical animals.
(ii) They have a central gastro-vascular cavity with a single opening called hypostome.
(iii) Digestion is extracellular and intracellular.
(iv) Examples are Sycon, Spongilla and Euspongia.
View answer and explanation
Correct option: C
(i), (ii) and (iii)
Option C ((i), (ii) and (iii)) is correct because coelenterates are aquatic, radially symmetrical, have a gastrovascular cavity with a hypostome, and exhibit both extracellular and intracellular digestion.
38
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Remembering
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Which of the following set of bony fishes is marine?
View answer and explanation
Correct option: A
Exocoetus and Hippocampus
Option A (Exocoetus and Hippocampus) is correct because both Exocoetus (flying fish) and Hippocampus (seahorse) are marine bony fishes.
39
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Remembering
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Which of the following is observed in amphibians?
View answer and explanation
Correct option: D
All of these
Option D (All of these) is correct because amphibians typically have a three-chambered heart, are cold-blooded (ectothermic), and lack scales.
40
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Understanding
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[A]: Pila is adopted to lead an amphibious life.
[R]: It is provided with a pulmonary sac for aerial respiration and a gill or ctenidium for aquatic respiration.
[R]: It is provided with a pulmonary sac for aerial respiration and a gill or ctenidium for aquatic respiration.
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 Pila (apple snail) is adapted to both aquatic and terrestrial environments, and it possesses both a gill (ctenidium) for aquatic respiration and a pulmonary sac for aerial respiration.
41
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Understanding
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Select the mismatch among the following w.r.t Animal kingdom
View answer and explanation
Correct option: B
Aschelminthes – Coelomate
Option B (Aschelminthes – Coelomate) is the mismatch because Aschelminthes (roundworms) are pseudocoelomates, not coelomates. Coelomates have a true coelom lined by mesoderm.
42
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Remembering
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Ammocoetes is
View answer and explanation
Correct option: C
A larval stage
Option C is correct because the ammocoetes larva is the larval stage of lampreys (Petromyzontida), a type of jawless fish.
43
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Remembering
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Which of the following animals possess non-elastic lungs with air sacs connected to them ?
View answer and explanation
Correct option: B
Birds
Option B (Birds) is correct because birds possess non-elastic lungs with air sacs connected to them, which aids in efficient respiration during flight.
44
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44 of 185
Understanding
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Which of the following is characterised by the presence of single circulation and is present in fresh water?
View answer and explanation
Correct option: C
Labeo
Option C (Labeo) is correct because Labeo (rohu) is a freshwater fish characterized by single circulation.
45
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Remembering
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Which of the following belongs to the class-Amphineura?
View answer and explanation
Correct option: A
Chiton
Option A (Chiton) is correct because Chitons are members of the class Amphineura within the phylum Mollusca.
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46
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Understanding
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[A]: When a foreign object, such as a sand grain gets in between the shell and mantle, it results in the formation of a pearl.
[R]: The inner nacreous layer of irridiscent nacre is called the mother of pearl which is formed of many thin and alternating layers of calcium carbonate and concholin.
[R]: The inner nacreous layer of irridiscent nacre is called the mother of pearl which is formed of many thin and alternating layers of calcium carbonate and concholin.
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 both the assertion and reason are true, and the reason correctly explains how pearls are formed when a foreign object is coated with nacre.
47
Hard
47 of 185
Understanding
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Taenia solium derives its energy from the breakdown of
View answer and explanation
Correct option: C
Glycogen
Option C (Glycogen) is correct because Taenia solium, being an endoparasite in the intestine, primarily derives its energy from the breakdown of glycogen present in the host's digested food.
48
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Remembering
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The nitrogeneous metabolic waste in Hydra is mostly
View answer and explanation
Correct option: A
Ammonia and is removed from whole surface of body
Option A (Ammonia and is removed from whole surface of body) is correct because Hydra excretes ammonia as its primary nitrogenous waste, and it's removed directly through the body surface.
49
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49 of 185
Remembering
+4 | -1
A sponge harmful to oyster industry is
View answer and explanation
Correct option: A
Cliona
Option A (Cliona) is correct because Cliona, a boring sponge, can damage oyster shells, harming the oyster industry.
50
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Understanding
+4 | -1
Which one is correct?
View answer and explanation
Correct option: D
Both (b) and (c)
Option D (Both (b) and (c)) is correct because the notochord is mesodermally derived and present in chordates, and arthropoda are indeed non-chordates.
51
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Analyzing
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Identify the incorrect match from those given below
View answer and explanation
Correct option: C
Cray Fish, Oniscus, Crustacea
Option C (Cray Fish, Oniscus, Crustacea) is correct because Oniscus (woodlouse) is an isopod, while crayfish are decapods. While both belong to Crustacea, Oniscus is not a typical example associated with Crayfish.
52
Hard
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Remembering
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Pelycosaurs were evolved from
View answer and explanation
Correct option: D
Synapsids
Option D (Synapsids) is correct because Pelycosaurs are an early group of synapsids that gave rise to therapsids and eventually mammals.
53
Hard
53 of 185
Remembering
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Ovoviviparity is seen in this caecilian
View answer and explanation
Correct option: B
Typhlonectus
Option B (Typhlonectus) is correct because Typhlonectus natans is a caecilian that exhibits ovoviviparity, meaning the eggs develop inside the mother's body, and she gives birth to live young.
54
Hard
54 of 185
Understanding
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Which of the following statements are true/false?
I. Mollusca possess cellular level of organisation
II. Arthropoda are true coelomates
III. Platyhelminths are pseudocoelomates
IV. Ctenophora have bilateral symmetry
Choose the correct option
I. Mollusca possess cellular level of organisation
II. Arthropoda are true coelomates
III. Platyhelminths are pseudocoelomates
IV. Ctenophora have bilateral symmetry
Choose the correct option
View answer and explanation
Correct option: B
Only II are True
Option B is correct because only Arthropoda are true coelomates. Mollusca have a coelom, but it's reduced. Platyhelminthes are acoelomates, and Ctenophora have radial symmetry.
55
Hard
55 of 185
Remembering
+4 | -1
Gill is monopectinate in
View answer and explanation
Correct option: D
Pila
Option D (Pila) is correct because Pila, a genus of freshwater snails, has a monopectinate gill, meaning it has filaments on only one side of the central axis.
56
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56 of 185
Remembering
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Tube-within-tube body plan is found in which animal?
View answer and explanation
Correct option: B
Fasciola
Option B (Fasciola) is correct because Fasciola (a flatworm) exhibits a tube-within-a-tube body plan, having a mouth and an anus.
57
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57 of 185
Remembering
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[A]: In Taenia solium, bladder worm is also known as cysticercus.
[R]: Bladder worm is characterised by a large vesicle and one scolex.
[R]: Bladder worm is characterised by a large vesicle and one scolex.
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 the bladder worm in Taenia solium is indeed known as cysticercus, and it's characterized by a large vesicle and one scolex.
58
Hard
58 of 185
Remembering
+4 | -1
Which of the following is a viviparous fish?
View answer and explanation
Correct option: B
Gambusia
Option B (Gambusia) is correct because Gambusia, also known as mosquitofish, is a viviparous fish, meaning it gives birth to live young.
59
Hard
59 of 185
Remembering
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In which of the following, there is syncytial epidermis and longitudinal muscle cells in four bands?
View answer and explanation
Correct option: A
Nematodes
Option A (Nematodes) is correct because nematodes have a syncytial epidermis and longitudinal muscle cells arranged in four bands.
60
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Understanding
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Which of the following are true to the prototherians?
I.Pectoral girdle is associated with T-shaped interclavicle.
II.Mammary glands are modified as sebaceous glands.
III.Pelvic girdle possesses epipubic bones.
IV.Vertebrae are with epiphyses.
I.Pectoral girdle is associated with T-shaped interclavicle.
II.Mammary glands are modified as sebaceous glands.
III.Pelvic girdle possesses epipubic bones.
IV.Vertebrae are with epiphyses.
View answer and explanation
Correct option: A
I and III
Option A (I and III) is correct because prototherians (monotremes) have a T-shaped interclavicle in their pectoral girdle and possess epipubic bones.
Revision notes and key takeaways
Review ANIMAL KINGDOM in your textbook or class notes, then use this set to check your understanding.
Showing 31-60 of 185 questions