Animal Kingdom NEET PYQReal NEET & AIPMT 2005–2021 questions, year-tagged, with solutions
By the RankUp team, founded by Dr. Deepak Sahu (MBBS Gold Medalist, NEET PG AIR 1731) · Updated
Every Animal Kingdom question from the NEET & AIPMT papers on this site (2005–2021), newest first. Each is tagged with its paper. Tap an option to check your answer and read the explanation.
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Animal Kingdom previous year questions
67 questions. Tap an option to check your answer.
Q1NEET 2021
Which one of the following organisms bears hollow and pneumatic long bones ?
Not quite — the answer is A.
Hollow, air-filled (pneumatic) long bones are a feature of birds, and Neophron is a bird (vulture). Hemidactylus is a lizard, while Macropus (kangaroo) and Ornithorhynchus (platypus) are mammals with solid bones.
Q2NEET 2021
Match List - I with List - II. List - I | List - II (a) Metamerism | (i) Coelenterata (b) Canal system | (ii) Ctenophora (c) Comb plates | (iii) Annelida (d) Cnidoblasts | (iv) Porifera Choose the correct answer from the options given below.
Not quite — the answer is C.
Metamerism is typical of Annelida, the canal system of Porifera, comb plates of Ctenophora, and cnidoblasts of Coelenterata. Hence (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i).
Q3NEET 2021
Match the following : List - I | List - II (a) Physalia | (i) Pearl oyster (b) Limulus | (ii) Portuguese Man of War (c) Ancylostoma | (iii) Living fossil (d) Pinctada | (iv) Hookworm Choose the correct answer from the options given below.
Not quite — the answer is C.
Physalia is the Portuguese man of war, Limulus (king crab) is a living fossil, Ancylostoma is the hookworm, and Pinctada is the pearl oyster. Hence (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i).
Q4NEET 2021
Read the following statements. (a) Metagenesis is observed in Helminths. (b) Echinoderms are triploblastic and coelomate animals. (c) Round worms have organ-system level of body organization. (d) Comb plates present in ctenophores help in digestion. (e) Water vascular system is characteristic of Echinoderms. Choose the correct answer from the options given below.
Not quite — the answer is D.
Echinoderms are triploblastic coelomates, roundworms have organ-system level organisation, and the water vascular system is characteristic of echinoderms, so (b), (c) and (e) are correct. Metagenesis occurs in cnidarians, not helminths, and comb plates of ctenophores help in locomotion, not digestion.
Q5NEET 2020 · Q9
Match the following columns and select the correct option. Column - I | Column - II (a) Gregarious, polyphagous pest | (i) Asterias (b) Adult with radial symmetry and larva with bilateral symmetry | (ii) Scorpion (c) Book lungs | (iii) Ctenoplana (d) Bioluminescence | (iv) Locusta
Not quite — the answer is B.
Locusta is the gregarious, polyphagous pest; Asterias (an echinoderm) has radially symmetrical adults but bilaterally symmetrical larvae; scorpions breathe by book lungs; and the ctenophore Ctenoplana is bioluminescent. Hence Locusta, Asterias, Scorpion, Ctenoplana is the correct order.
Q6NEET 2020 · Q26
Which of the following statements are true for the phylum-Chordata? (a) In Urochordata notochord extends from head to tail and it is present throughout their life. (b) In Vertebrata notochord is present during the embryonic period only. (c) Central nervous system is dorsal and hollow. (d) Chordata is divided into 3 subphyla: Hemichordata, Tunicata and Cephalochordata.
Not quite — the answer is D.
In vertebrates the notochord is present only in the embryo and is replaced by the vertebral column, and all chordates have a dorsal, hollow nerve cord, so those two statements are true. In urochordates the notochord is only in the larval tail, and the three subphyla are Urochordata, Cephalochordata and Vertebrata, since Hemichordata is now a separate phylum.
Q7NEET 2020 · Q37
Match the following columns and select the correct option. Column - I | Column - II (a) 6 - 15 pairs of gill slits | (i) Trygon (b) Heterocercal caudal fin | (ii) Cyclostomes (c) Air Bladder | (iii) Chondrichthyes (d) Poison sting | (iv) Osteichthyes
Not quite — the answer is A.
Cyclostomes have 6-15 pairs of gill slits, Chondrichthyes have a heterocercal caudal fin, Osteichthyes have an air bladder, and Trygon (sting ray) has a poison sting. Hence Cyclostomes, Chondrichthyes, Osteichthyes, Trygon is correct.
Q8NEET 2020 · Q87
Bilaterally symmetrical and acoelomate animals are exemplified by:
Not quite — the answer is B.
Flatworms (Platyhelminthes) are bilaterally symmetrical and acoelomate. Ctenophores are radially symmetrical, Aschelminthes are pseudocoelomate, and annelids are true coelomates.
Q9NEET 2019 · Q100
Consider following features : (a) Organ system level of organisation (b) Bilateral symmetry (c) True coelomates with segmentation of body Select the correct option of animal groups which possess all the above characteristics.
Not quite — the answer is A.
Annelids, arthropods and chordates are all bilateral, organ-system level, true coelomates with metameric segmentation. Molluscs are coelomate but unsegmented, so any group including Mollusca fails.
Q10NEET 2019 · Q157
Match the following organisms with their respective characteristics : (a) Pila — (i) Flame cells (b) Bombyx — (ii) Comb plates (c) Pleurobrachia — (iii) Radula (d) Taenia — (iv) Malpighian tubules Select the correct option from the following :
Not quite — the answer is B.
Pila, a mollusc, has a rasping radula; Bombyx, an insect, excretes by Malpighian tubules; Pleurobrachia, a ctenophore, swims with comb plates; and Taenia, a flatworm, has flame cells. Giving comb plates to the silkworm is the main mix-up.
Q11NEET 2018 · Q148
Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.
Not quite — the answer is A.
Birds have a crop to store food and a muscular gizzard to grind it, since they have no teeth; NCERT lists these as additional chambers of the bird digestive tract. Reptiles, amphibians and bony fishes do not have this crop-and-gizzard arrangement.
Q12NEET 2018 · Q150
Which one of these animals is not a homeotherm?
Not quite — the answer is B.
Chelone is a turtle, a reptile, so it is poikilothermic (cold-blooded). Camelus (camel) and Macropus (kangaroo) are mammals and Psittacula (parrot) is a bird, all of which are homeotherms.
Q13NEET 2018 · Q151
Which of the following animals does not undergo metamorphosis?
Not quite — the answer is C.
Earthworm shows direct development: young worms hatch from cocoons with no larval stage, so there is no metamorphosis. Moths pass through caterpillar and pupa, tunicates have a tadpole larva that undergoes retrogressive metamorphosis, and starfish have a bilateral larva that becomes the radial adult.
Q14NEET 2017 · Q50
In case of poriferans, the spongocoel is lined with flagellated cells called:
Not quite — the answer is C.
The spongocoel and canals of sponges are lined by flagellated collar cells called choanocytes, which drive the water current. Ostia are the pores through which water enters and the osculum is the opening through which it leaves; they are openings, not cells.
Q15NEET 2017 · Q59
An important characteristic that Hemichordates share with Chordates is:
Not quite — the answer is C.
Hemichordates have pharyngeal gill slits, one of the basic chordate features. Chordates have a notochord and a dorsal (not ventral) hollow nerve cord, so the absence of a notochord and a ventral nerve cord are not shared features.
Q16NEET 2017 · Q69
Which among these is the correct combination of aquatic mammals?
Not quite — the answer is C.
Whales, dolphins and seals are all aquatic mammals. Sharks and Trygon (sting ray) are cartilaginous fishes, so any group containing them is wrong.
Q17NEET 2017 (Gujarati paper) · Q102
Which of the following represents correct match of feature with the given set of animals? Feature – Animals
Not quite — the answer is C.
Prawn, centipede and grasshopper are all arthropods with jointed appendages. Tapeworm has no respiratory system, Hydra is radially symmetrical and adult sea urchin is radial, and the liver fluke is a flatworm without metameric segmentation.
Q18NEET 2017 (Gujarati paper) · Q129
Choose the false statement regarding Petromyzon.
Not quite — the answer is C.
Petromyzon (lamprey) is marine but migrates to fresh water for spawning; the adults die soon after and the larvae return to the ocean after metamorphosis, so migrating to the ocean to spawn is false. Cyclostomes are scaleless, have a circular jawless sucking mouth and a closed circulatory system, so the statement about closed circulation is true.
Q19NEET 2017 (Gujarati paper) · Q130
Which of the following symmetry is exhibited by Echinoderm Larvae?
Not quite — the answer is D.
Echinoderm larvae are bilaterally symmetrical, while the adults become radially symmetrical. Radial symmetry describes the adult, not the larva.
Q20NEET 2016 Phase 2 · Q138
Choose the correct statement.
Not quite — the answer is B.
Cyclostomes such as lampreys and hagfishes are jawless and lack paired fins. Egg-laying mammals like the platypus are not viviparous, crocodiles have a four-chambered heart, and cartilaginous fishes have gill slits without an operculum.
Q21NEET 2016 Phase 1 · Q95
Which of the following features is not present in the Phylum - Arthropoda?
Not quite — the answer is C.
Parapodia are lateral locomotory appendages of aquatic annelids such as Nereis, not of arthropods. Arthropods have a chitinous exoskeleton, segmented bodies and jointed appendages.
Q22NEET 2016 Phase 1 · Q124
Which of the following features is not present in Periplaneta americana?
Not quite — the answer is B.
Cockroach is a protostome arthropod: its embryos show determinate cleavage, and its coelom is schizocoelic in origin. Indeterminate radial cleavage is a deuterostome feature (echinoderms, chordates). Its exoskeleton is chitin, a polymer of N-acetylglucosamine, and the body is segmented.
Q23NEET 2016 Phase 1 · Q145
Which of the following characteristic features always holds true for the corresponding group of animals?
Not quite — the answer is A.
All Chondrichthyes (sharks, rays) have a cartilaginous endoskeleton. Not all mammals are viviparous (monotremes lay eggs), jawless chordates such as cyclostomes lack jaws, and crocodiles have a four-chambered heart.
Q24NEET 2016 Phase 1 · Q159
Which one of the following characteristics is not shared by birds and mammals?
Not quite — the answer is C.
Birds are oviparous (lay eggs) while most mammals are viviparous, so viviparity is not shared. Both groups have bony skeletons, breathe with lungs and are warm-blooded (homeothermic).
Q25AIPMT 2015
Which of the following represents the correct combination without any exception? (Characteristics – Class)
Not quite — the answer is C.
NCERT describes Chondrichthyes as having a ventral mouth, gill slits without an operculum, skin with minute placoid scales and a notochord that persists throughout life, so this set holds for all members. The mammal set has exceptions: whales lack external pinnae and hind limbs. Birds have dry skin without glands, and cyclostomes lack paired appendages.
Q26AIPMT 2015
Which of the following characteristics is mainly responsible for diversification of insects on land?
Not quite — the answer is D.
The chitinous exoskeleton prevents water loss and protects the body, which let insects colonise dry land in great variety. Segmentation and bilateral symmetry are shared with many aquatic animals and do not solve the problem of drying out.
Q27AIPMT 2015
Which of the following animals is not viviparous?
Not quite — the answer is D.
The platypus is a monotreme mammal that lays eggs, so it is oviparous. Whale, bat (flying fox) and elephant give birth to live young.
Q28AIPMT 2015
Which of the following endoparasites of humans does show viviparity?
Not quite — the answer is D.
Trichinella spiralis is viviparous: the female releases live larvae that migrate to and encyst in muscle. Ascaris, Ancylostoma and Enterobius lay eggs.
Q29AIPMT 2014
Which one of the following living organisms completely lacks a cell wall?
Not quite — the answer is A.
Gorgonia (sea-fan) is a cnidarian, an animal, so its cells have no cell wall. Saccharomyces (yeast) has a chitinous/glucan wall, and blue-green algae (cyanobacteria) have a peptidoglycan cell wall.
Q30AIPMT 2014
Select the Taxon mentioned that represents both marine and fresh water species:
Not quite — the answer is C.
Cnidaria are mostly marine but include freshwater forms such as Hydra, so the phylum has both marine and freshwater species. Ctenophores, cephalochordates (Amphioxus) and echinoderms are exclusively marine.
Q31AIPMT 2014
Planaria possess high capacity of:
Not quite — the answer is A.
Planaria, a flatworm, has a remarkably high capacity for regeneration: even small pieces can regrow a whole animal. It does not show alternation of generations, bioluminescence or metamorphosis.
Q32AIPMT 2014
A marine cartilaginous fish that can produce electric current is:
Not quite — the answer is A.
Torpedo, the electric ray, is a marine cartilaginous fish with electric organs that can produce shocks. Trygon (sting ray) has a poison sting, while Scoliodon (dogfish) and Pristis (saw fish) have no electric organs.
Q33NEET 2013
Which of the following are correctly matched with respect to their taxonomic classification?
Not quite — the answer is C.
House fly, butterfly, tsetse fly and silverfish all belong to class Insecta. Cuttlefish and silverfish are not fishes, centipedes, millipedes, spiders and scorpions are not insects, and the spiny anteater is a mammal, not an echinoderm.
Q34NEET 2013
Which group of animals belong to the same phylum?
Not quite — the answer is C.
Prawn, scorpion and Locusta all have jointed appendages and a chitinous exoskeleton, placing them in phylum Arthropoda. The other groups mix phyla, e.g. earthworm is an annelid, pinworm a nematode and tapeworm a flatworm.
Q35NEET 2013
One of the representatives of Phylum Arthropoda is
Not quite — the answer is B.
Silverfish (Lepisma) is a wingless insect and hence an arthropod. Cuttlefish is a mollusc, and pufferfish and flying fish are bony fishes.
Q36AIPMT 2012 Mains
Which one of the following pairs of animals are similar to each other pertaining to the feature stated against them?
Not quite — the answer is D.
The sea horse and the flying fish are both bony fishes and therefore cold-blooded (poikilothermous). Ornithorhynchus lays eggs, unlike the viviparous bat Pteropus; the crocodile has a four-chambered heart; and Ascaris and Ancylostoma are unsegmented roundworms.
Q37AIPMT 2012 Mains
Which one of the following categories of animals is correctly described with no single exception in it?
Not quite — the answer is B.
Every bony fish has four pairs of gills covered by an operculum on each side. The other groups have exceptions: crocodiles have a four-chambered heart, some sponges (Spongilla) live in freshwater, and monotremes lay eggs.
Q38AIPMT 2012 Prelims
In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct ?
Not quite — the answer is B.
Pila (apple snail) is a mollusc with a radula, but its body is unsegmented, so the pair given for it is wrong. Periplaneta (jointed appendages, chitinous exoskeleton), Asterias (spiny skin, water vascular system) and Sycon (pores, canal system) are correctly matched.
Q39AIPMT 2011 Mains
Which one of the following statements is totally wrong about the occurrence of notochord while the other three are correct
Not quite — the answer is A.
All chordates, humans included, have a notochord at some stage; in humans it forms in the embryo and is later replaced by the vertebral column, so saying it is absent from the very beginning is totally wrong. Amphioxus keeps it throughout life, ascidians have it only in the larval tail and in frogs it is replaced by the vertebral column.
Q40AIPMT 2011 Prelims
Which of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
Not quite — the answer is D.
Every member of Chondrichthyes (sharks, rays) has a cartilaginous endoskeleton, with no exceptions. Not all mammals give birth (platypus lays eggs), crocodiles have a four-chambered heart, and jawless cyclostomes are chordates without jaws.
Q41AIPMT 2011 Prelims
What will you look for to identify the sex of the following?
Not quite — the answer is A.
Male sharks bear claspers on their pelvic fins, used to transfer sperm. In Ascaris it is the male whose posterior end is sharply curved, the copulatory pad of male frogs is on the first digit of the fore limb, and anal cerci are present in both sexes of cockroach (anal styles are male-only).
Q42AIPMT 2010 Mains · Q53
Crocodile and penguin are similar to Whale and Dogfish in which one of the following features?
Not quite — the answer is D.
All four are chordates, and every chordate has pharyngeal gill slits at some stage of its life, at least in the embryo. Chordates have a hollow dorsal nerve cord, not a solid one; the dogfish has a cartilaginous skeleton and the whale is viviparous, so the other features are not common to all.
Q43AIPMT 2010 Prelims · Q106
One example of animals having a single opening to the outside that serves both as mouth as well as anus is
Not quite — the answer is A.
Platyhelminthes such as the liver fluke Fasciola have an incomplete digestive system, with one opening that works as both mouth and anus. Molluscs (Octopus), echinoderms (Asterias) and urochordates (Ascidia) have a complete gut with a separate mouth and anus.
Q44AIPMT 2010 Prelims · Q107
Which one of the following statements about all the four of Spongilla, Leech, Dolphin and Penguin is correct ?
Not quite — the answer is D.
Collar cells (choanocytes) lining the canal system are unique to sponges such as Spongilla. The homoiothermy statement fails because the dolphin, a mammal, is also warm-blooded. Spongilla is a freshwater sponge and is asymmetrical, so the other two statements fail too.
Q45AIPMT 2010 Prelims · Q108
Which one of the following kinds of animals are triploblastic?
Not quite — the answer is B.
Triploblasty, with a mesoderm between ectoderm and endoderm, begins with the Platyhelminthes (flatworms). Corals (cnidarians) and ctenophores are diploblastic, and sponges have a cellular level of organisation without true germ layers.
Q46AIPMT 2010 Prelims · Q109
Which one of the following statements about certain given animals is correct ?
Not quite — the answer is B.
Aschelminthes (roundworms) have a body cavity that is not lined by mesoderm all round (mesoderm occurs only as scattered pouches), so they are pseudocoelomates. Flatworms are acoelomate, while molluscs and arthropods such as insects are true coelomates.
Q47AIPMT 2009 Prelims · Q57
Which one of the following groups of animals is bilaterally symmetrical and triploblastic?
Not quite — the answer is A.
Roundworms (Aschelminthes) are bilaterally symmetrical, triploblastic pseudocoelomates. Ctenophores and cnidarians are radially symmetrical and diploblastic, and sponges have no true tissue layers.
Q48AIPMT 2009 Prelims · Q63
Peripatus is a connecting link between:
Not quite — the answer is B.
Peripatus (Onychophora) has annelid features such as nephridia and a soft segmented body along with arthropod features such as tracheae, claws and a haemocoel, so it links Annelida and Arthropoda.
Q49AIPMT 2009 Prelims · Q100
Which one of the following pairs of animals comprises jawless fishes?
Not quite — the answer is B.
Lampreys (Petromyzon) and hagfishes (Myxine) are cyclostomes, the jawless vertebrates (Agnatha). Eels, guppies, mackerel and rohu are bony fishes with jaws.
Q50AIPMT 2008 Prelims · Q105
Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature? Animals - Morphological feature
Not quite — the answer is D.
Scorpion, spider and cockroach are all arthropods, and non-chordates like these have a ventral, solid nerve cord. Taenia is not metamerically segmented, sea anemone is radially symmetrical, and sea urchin (an echinoderm) has no jointed appendages, so the other groupings each contain a misfit.
Q51AIPMT 2008 Prelims · Q106
Which one of the following phyla is correctly matched with its two general characteristics?
Not quite — the answer is A.
Molluscs are usually oviparous with indirect development, typically via trochophore and veliger larvae. Arthropods breathe by gills, book lungs or tracheae and are not all divided into head, thorax and abdomen; echinoderms have external fertilisation; and many chordates have a common cloacal opening.
Q52AIPMT 2008 Prelims · Q107
Which one of the following in birds, indicates their reptilian ancestry?
Not quite — the answer is B.
NCERT notes that the hind limbs of birds generally bear scales, a retained reptilian character. A four-chambered heart is a feature birds share with mammals rather than with reptiles (which mostly have three chambers), so it does not indicate reptilian ancestry.
Q53AIPMT 2008 Prelims · Q108
Ascaris is characterized by
Not quite — the answer is C.
Ascaris is an aschelminth (roundworm): it is pseudocoelomate and its body is not segmented. True coelom together with metamerism is the annelid condition, not that of nematodes.
Q54AIPMT 2008 Prelims · Q109
Which one of the following is not a characteristic of phylum Annelida?
Not quite — the answer is D.
Annelids are true coelomates (schizocoelous); a pseudocoelom is the feature of Aschelminthes. Annelids do have a ventral nerve cord, closed circulation and metameric segmentation.
Q55AIPMT 2007 Prelims · Q114
What is true about Nereis, scorpion, cockroach and silver fish?
Not quite — the answer is A.
Nereis (an annelid) has a contractile dorsal blood vessel, and arthropods such as scorpion, cockroach and silverfish have a dorsal tubular heart, so all have a dorsal heart. Nereis is a marine annelid with unjointed parapodia, so 'none is aquatic', 'same phylum' and 'jointed appendages' all fail.
Q56AIPMT 2007 Prelims · Q140
What is common between parrot, platypus and kangaroo?
Not quite — the answer is D.
Birds and mammals are warm-blooded (homoiothermous), so the parrot, the platypus and the kangaroo all keep a constant body temperature. Kangaroos are viviparous and have teeth, so oviparity and toothless jaws do not fit all three.
Q57AIPMT 2007 Prelims · Q145
Which one of the following is a matching pair of a body feature and the animal possessing it?
Not quite — the answer is A.
Leech is an annelid, and non-chordates such as annelids have a ventral, solid nerve cord. Chamaeleon, being a chordate, does have pharyngeal gill slits in the embryo, scorpion has a dorsal heart, and octopus has no post-anal tail.
Q58AIPMT 2007 Prelims · Q150
Which one of the following pairs is mismatched?
Not quite — the answer is D.
Pila globosa is the apple snail and does not produce pearls; pearls come from the pearl oyster Pinctada. Apis gives honey, Kerria (Laccifer) lacca gives lac and Bombyx mori gives silk.
Q59AIPMT 2006 Prelims · Q151
Which one of the following is a matching set of a phylum and its three examples ?
Not quite — the answer is C.
Loligo (squid), Teredo (shipworm) and Octopus are all molluscs. Bonellia is not a cnidarian, Enterobius is a roundworm, not a flatworm, and Pennatula (sea pen) is a cnidarian, not a sponge.
Q60AIPMT 2006 Prelims · Q152
Metameric segmentation is the characteristic of :
Not quite — the answer is C.
True metameric segmentation, with the body divided into repeated segments, is found in Annelida and Arthropoda. Platyhelminthes and molluscs are not metamerically segmented.
Q61AIPMT 2006 Prelims · Q184
Which one of the following has an open circulatory system ?
Not quite — the answer is B.
Periplaneta (cockroach), like other arthropods, has an open circulatory system with blood flowing through haemocoel sinuses. Pheretima, Hirudinaria and Octopus have closed systems.
Q62AIPMT 2006 Prelims · Q188
Biradial symmetry and lack of cnidoblasts are the characteristics of :
Not quite — the answer is B.
Ctenophores such as Ctenoplana and Beroe have biradial symmetry and lack cnidoblasts, using colloblasts to catch prey instead. Hydra, sea anemone and Aurelia are cnidarians with cnidoblasts.
Q63AIPMT 2006 Prelims · Q196
In which one of the following sets of animals do all the four give birth to young ones ?
Not quite — the answer is D.
Kangaroo, hedgehog, dolphin and loris are all viviparous mammals. Each other set has an egg-layer: ostrich, platypus and penguin, or kiwi.
Q64AIPMT 2006 Prelims · Q198
Two common characters found in centipede, cockroach and crab are :
Not quite — the answer is B.
Centipedes, cockroaches and crabs are arthropods, so they all have jointed legs and a chitinous exoskeleton. Anal cerci, tracheae, green glands and book lungs are found only in some of them.
Q65AIPMT 2005 Prelims · Q132
From the following statements select the wrong one :
Not quite — the answer is C.
NCERT describes sponges as 'generally marine', and freshwater sponges such as Spongilla exist, so 'exclusively marine' is the wrong statement. Millipedes have two pairs of legs on each (diplo)segment, prawns carry antennules plus antennae (two pairs), and nematocysts are unique to cnidarians.
Q66AIPMT 2005 Prelims · Q136
Which one of the following characters is not typical of the class-mammalia ?
Not quite — the answer is C.
Mammals have twelve pairs of cranial nerves; ten pairs is the condition in fishes and amphibians. Seven neck vertebrae, teeth set in sockets (thecodont) and alveolar lungs are all typical mammalian traits.
Q67AIPMT 2005 Prelims · Q178
In contrast to annelids the platyhelminths show :
Not quite — the answer is D.
Flatworms are acoelomates with no body cavity, whereas annelids are true coelomates. Both groups are bilaterally symmetrical, so bilateral symmetry does not set them apart, and a pseudocoel is found in roundworms.
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