25 questions in 25 minutes on the NTA computer-based test interface, all from Animal Kingdom. +4 / -1 marking, instant score, full solutions. Free, no login.
A chapter test is the fastest honest check on whether a chapter has actually landed. This one draws 25 questions from Animal Kingdom, of which 19 are real NEET previous-year questions and 0 sit at the harder end of the bank. Sit it in one 25-minute block, the way you would in the hall.
Revising first? Read the Animal Kingdom chapter notes, then come back and take this test to check it stuck.
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Duration: 180 minutes · 180 questions · 720 marks maximum
- The clock will be set at the server. The countdown timer at the top right of the screen will display the remaining time. When the timer reaches zero, the examination will end by itself.
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NEET CBT mock test: common questions
How many questions are in this Animal Kingdom mock test?
25 questions in 25 minutes, marked +4 for a correct answer and -1 for a wrong one, exactly like the real paper. 19 of them are NEET previous-year questions.
Is this the same interface as the real NEET CBT?
Yes. On-screen countdown, colour-coded question palette, Save & Next, Clear Response and Mark for Review, then an instant score with full solutions.
Should I take this before or after revising Animal Kingdom?
Both, and that is the point. Take it cold to find out what you actually do not know, revise from the chapter notes, then retake it to confirm the gap closed.
All 25 questions with answers and solutions
The complete paper in text form, with the correct option and a worked explanation for every question. Sit the timed test above first: the score is only worth having if you earn it. Then open this to revise, or to re-read a question you got wrong without replaying the whole paper.
Show all 25 questions with answers and solutions
Zoology
- Q1Select the taxon that includes both marine and freshwater species.
- Cnidaria
- Echinoderms
- Ctenophora
- Cephalochordata
Answer: (A) Cnidaria
Cnidarians (Coelenterata) such as Hydra (freshwater) and jellyfish/corals (marine) occur in both freshwater and marine habitats. Echinoderms, ctenophores and cephalochordates are found exclusively in marine environments.
- Q2The wish bone (furcula) of birds is formed from:
- pelvic girdle
- the pectoral girdle (fused clavicles and interclavicle)
- hind limbs
- skull
Answer: (B) the pectoral girdle (fused clavicles and interclavicle)
The furcula or wish bone is a V-shaped bone of the pectoral girdle formed by the fusion of the two clavicles with a single interclavicle. It is not derived from the pelvic girdle, skull or hind limbs.
- Q3Which one of the following kinds of animals are triploblastic? (a) Flatworms (b) Sponges (c) Ctenophores (d) Corals
- Corals
- Flatworms
- Sponges
- Ctenophores
Answer: (B) Flatworms
Flatworms (Platyhelminthes) have three germ layers (ectoderm, mesoderm, endoderm) and so are triploblastic. Sponges (Porifera), ctenophores (Ctenophora) and corals (Coelenterata) are diploblastic, with only ectoderm and endoderm separated by mesoglea.
- Q4How many germ layers and which coelomic condition characterise the phylum Annelida?
- Two germ layers, acoelomate
- Three germ layers, pseudocoelomate
- Two germ layers, coelomate
- Three germ layers, coelomate
Answer: (D) Three germ layers, coelomate
Annelids are triploblastic (three germ layers) and have a true coelom lined by mesoderm (eucoelomate). They are the first major phylum to possess a true coelom.
- Q5Which one of the following organisms bears hollow, pneumatic long bones?
- Ornithorhynchus
- Macropus
- Hemidactylus
- Neophron
Answer: (D) Neophron
Pneumatic (hollow, air-filled) bones reduce body weight for flight and are a feature of birds; Neophron (a vulture) is a bird. Hemidactylus is a reptile (lizard), and Macropus (kangaroo) and Ornithorhynchus (platypus) are mammals, none of which has pneumatic bones.
- Q6Which of the following is an egg-laying (oviparous) mammal?
- Delphinus
- Macropus
- Ornithorhynchus
- Pteropus
Answer: (C) Ornithorhynchus
Ornithorhynchus (the duck-billed platypus) is a monotreme – an egg-laying mammal. Macropus (kangaroo) is a marsupial; Pteropus (flying fox) and Delphinus (dolphin) are placental mammals.
- Q7Which one of the following is NOT a characteristic feature of phylum Annelida?
- Closed circulatory system
- Segmentation (metamerism)
- Pseudocoelom
- Ventral nerve cord
Answer: (C) Pseudocoelom
Annelids possess a TRUE (schizocoelous) coelom, not a pseudocoelom, so ‘pseudocoelom’ is not an annelid feature. A closed circulatory system, metameric segmentation and a double ventral nerve cord are all genuine annelid characters.
- Q8Kala-azar and oriental sore are spread by:
- bed bug
- housefly
- sand fly
- fruit fly
Answer: (C) sand fly
Kala-azar (visceral leishmaniasis) and oriental sore (cutaneous leishmaniasis) are caused by Leishmania, whose insect vector is the sand fly (Phlebotomus). Houseflies, bed bugs and fruit flies are not vectors of Leishmania.
- Q9A wood-boring mollusc (shipworm) is:
- Patella
- Limax
- Teredo
- Chiton
Answer: (C) Teredo
Teredo, commonly called the shipworm, is a bivalve mollusc (Pelecypoda) notorious for boring into and destroying submerged wood. Chiton, Limax and Patella are molluscs but are not wood-boring shipworms.
- Q10The water-vascular system is a unique feature of which phylum?
- Mollusca
- Arthropoda
- Echinodermata
- Annelida
Answer: (C) Echinodermata
Echinoderms possess a unique water-vascular system used for locomotion, capture and transport of food, and respiration. It is found in no other phylum.
- Q11Both male and female pigeons secrete ‘milk’ through their:
- gizzard
- crop
- modified sweat glands
- salivary glands
Answer: (B) crop
Pigeon milk is secreted by the crop in both male and female pigeons during the breeding season to feed the young. It is not a glandular (mammary, salivary or sweat) secretion, and the gizzard is purely a grinding chamber.
- Q12In which animal is the nerve cell present but the brain absent?
- Hydra
- Sponge
- Cockroach
- Earthworm
Answer: (A) Hydra
Hydra possesses nerve cells arranged in a diffuse nerve net but has no brain or even a nerve cord. Sponges lack nerve cells altogether, whereas earthworm and cockroach both have a definite cerebral ganglion (brain).
- Q13An animal in which the body cavity is not lined by mesoderm is called:
- Coelomate
- Eucoelomate
- Pseudocoelomate
- Acoelomate
Answer: (C) Pseudocoelomate
In pseudocoelomates the cavity between the body wall and gut is not lined by mesoderm; mesoderm is present only as scattered pouches. Roundworms (Aschelminthes) are the classic example.
- Q14Tube feet are the locomotory organs of which animal?
- cuttle fish
- cockroach
- cat fish
- starfish
Answer: (D) starfish
Starfish (Echinodermata) move using tube feet operated by the water-vascular system. Cockroach and cuttle fish use legs/fins, and cat fish swims with fins; none of them has tube feet.
- Q15Bladderworm (cysticercus) is the larval stage of:
- roundworm
- tapeworm
- liver fluke
- pinworm
Answer: (B) tapeworm
Cysticercus (bladderworm) is the infective larval stage of the tapeworm (Taenia), found encysted in pig muscle (‘measly pork’). The liver fluke’s larvae are miracidium/cercaria/metacercaria, not a cysticercus.
- Q16Compared to those of humans, the erythrocytes of a frog are:
- without nucleus but with haemoglobin
- very much smaller and fewer
- nucleated and without haemoglobin
- nucleated and with haemoglobin
Answer: (D) nucleated and with haemoglobin
Frog red blood cells are oval, nucleated and contain haemoglobin, whereas mature human RBCs are enucleate (non-nucleated). So compared with humans, frog erythrocytes are nucleated and still possess haemoglobin.
- Q17All chordates possess:
- limbs
- an axial skeletal rod, the notochord (at some stage)
- a skull
- an exoskeleton
Answer: (B) an axial skeletal rod, the notochord (at some stage)
The defining feature of phylum Chordata is the presence of a notochord, a dorsal axial supporting rod, at some stage of life. An exoskeleton, limbs and a skull are not present in all chordates (e.g. protochordates lack a skull).
- Q18Which one of the following living organisms completely lacks a cell wall?
- Saccharomyces
- Sea-fan (Gorgonia)
- Cyanobacteria
- Blue-green algae
Answer: (B) Sea-fan (Gorgonia)
Sea-fan (Gorgonia) is an animal (phylum Cnidaria) and animal cells have no cell wall. Cyanobacteria/blue-green algae have peptidoglycan walls and Saccharomyces (yeast) has a chitinous wall, so all three of the others possess cell walls.
- Q19Statements about Pheretima: which one is its single very special feature?
- fertilisation of eggs occurs inside the body
- S-shaped setae embedded in the integument are defensive weapons against enemies
- the typhlosole greatly increases the effective absorption area of digested food in the intestine
- it has a long dorsal tubular heart
Answer: (C) the typhlosole greatly increases the effective absorption area of digested food in the intestine
In the earthworm Pheretima, an internal median fold of the dorsal intestinal wall called the typhlosole greatly increases the surface area for absorption of digested food. The setae are locomotory (not defensive), the heart is not a single long dorsal tube, and fertilisation is external in a cocoon.
- Q20Flight muscles of a bird are attached to the:
- coracoid
- keel of the sternum
- clavicle
- scapula
Answer: (B) keel of the sternum
The large flight (pectoral) muscles of birds are attached to the keel (carina), a vertical midventral ridge of the sternum, which provides a broad surface for muscle attachment. The clavicle, scapula and coracoid are part of the pectoral girdle but are not the main flight-muscle attachment.
- Q21Match the animal with its phylum: Limulus (king crab), Pila (apple snail), Balanoglossus.
- Mollusca, Arthropoda, Chordata
- Arthropoda, Echinodermata, Hemichordata
- Mollusca, Mollusca, Hemichordata
- Arthropoda, Mollusca, Hemichordata
Answer: (D) Arthropoda, Mollusca, Hemichordata
Limulus (king/horseshoe crab, a living fossil) is an arthropod, Pila is a mollusc, and Balanoglossus is a hemichordate with a worm-like body and stomochord. Hence Arthropoda, Mollusca, Hemichordata.
- Q22A common characteristic of all vertebrates is:
- division of the body into head, neck, trunk and tail
- presence of skull (cranium)
- presence of two pairs of functional appendages
- body covered with an exoskeleton
Answer: (B) presence of skull (cranium)
All vertebrates possess a well-developed cranium (skull) protecting the brain, hence they are also called Craniata. Not all vertebrates have a neck, two pairs of limbs (e.g. fishes, snakes) or an exoskeleton, so those features are not universal.
- Q23Gorilla, chimpanzee, monkeys and human belong to the same:
- species
- family
- genus
- order
Answer: (D) order
Gorilla, chimpanzee, monkeys and humans all belong to the same order, Primata (Primates), of class Mammalia. They differ at the genus and species (and mostly family) levels.
- Q24The presence of gills in the tadpole of a frog indicates that:
- fishes evolved from frog-like ancestors
- frogs will have gills in future
- fishes were amphibious in the past
- frogs evolved from gilled (fish-like) ancestors
Answer: (D) frogs evolved from gilled (fish-like) ancestors
By Haeckel’s biogenetic law (ontogeny repeats phylogeny), the gilled tadpole stage of a frog reflects the gilled, fish-like ancestry of amphibians, indicating that frogs evolved from gilled ancestors. It does not show that fishes were amphibian or arose from frogs.
- Q25Nematocysts (stinging cells) for defence and capture of prey are characteristic of:
- Ctenophora
- Porifera
- Coelenterata
- Echinodermata
Answer: (C) Coelenterata
Cnidoblasts (containing nematocysts) are the hallmark of Coelenterata/Cnidaria, used for anchorage, defence and prey capture. The name Cnidaria itself derives from these stinging cells.