Zoology One Liner MCQs with Answers

ZOOLOGY ONE LINER MCQS

Zoology one-liner MCQs, specially created to help students and job seekers prepare for competitive exams. This page contains 200 plus carefully selected Zoology multiple-choice questions with answers so you can practice efficiently in minimum time. Moreover, each question is short and focused, enabling you to revise more topics in less time quickly. Additionally, it helps you to identify your weak areas and work on them effectively.

In addition, our one-liner MCQs cover a broad range of Zoology topics, including classification, anatomy, physiology, and evolution. Consequently, you can strengthen your knowledge & improve accuracy too. Besides, because transition between topics is smooth, your revision becomes easier and faster.

Furthermore, each question is accompanied by its correct answer, and in some cases a brief explanation. Therefore, you can immediately check your understanding. Finally, use this resource regularly to boost your exam performance and secure better scores. Also, you can check all subject One liner Mcqs

General Zoology Multiple Choice Questions

Who is known as the father of Zoology?
Answer: Aristotle
The study of animals is called?
Answer: Zoology
Who is regarded as the father of modern taxonomy?
Answer: Carolus Linnaeus
Which is the largest animal on Earth?
Answer: Blue Whale
The smallest mammal in the world is?
Answer: Bumblebee Bat
Which animal lays the largest egg?
Answer: Ostrich
Which animal has the longest gestation period?
Answer: Elephant
Which is the fastest land animal?
Answer: Cheetah
Which organ helps birds in flight?
Answer: Wings
Which phylum do humans belong to?
Answer: Chordata
Which is the largest living reptile?
Answer: Saltwater Crocodile
What is the main characteristic of mammals?
Answer: Presence of mammary glands
Which is the largest fish?
Answer: Whale Shark
Which animal is known as the ship of the desert?
Answer: Camel
Which is the heaviest snake in the world?
Answer: Green Anaconda
The backbone in animals is made of?
Answer: Vertebrae
Which animal is a marsupial?
Answer: Kangaroo
Which blood cells help in fighting diseases?
Answer: White Blood Cells
Which animal can regenerate its lost arm?
Answer: Starfish
The scientific study of insects is called?
Answer: Entomology
Which class of animals has scales and lays eggs on land?
Answer: Reptiles
Which is the largest bird?
Answer: Ostrich
Which organ is absent in frogs?
Answer: Diaphragm
Which mammal can fly?
Answer: Bat
Which part of the human brain controls balance?
Answer: Cerebellum
Which organ helps fish to breathe?
Answer: Gills
Which organ do birds use for sound production?
Answer: Syrinx
Which animal has the longest lifespan?
Answer: Bowhead Whale
Which invertebrates have exoskeletons?
Answer: Arthropods
Which animal has three hearts?
Answer: Octopus

Animal Biology MCQs with Answers

Which vitamin is synthesized in the skin by sunlight?
Answer: Vitamin D
Which phylum includes flatworms?
Answer: Platyhelminthes
Which animal can change its body color?
Answer: Chameleon
Which is the largest primate?
Answer: Gorilla
Which group of animals are warm-blooded and lay eggs?
Answer: Birds
Which mammal lays eggs?
Answer: Platypus
Which animal has no backbone?
Answer: Invertebrates
Which fish is known as a living fossil?
Answer: Coelacanth
Which is the national animal of Pakistan?
Answer: Markhor
Which animal has the strongest bite force?
Answer: Saltwater Crocodile
Which organ produces insulin?
Answer: Pancreas
The study of amphibians and reptiles is called?
Answer: Herpetology
Which is the largest order of mammals?
Answer: Rodentia
Which bird is a symbol of peace?
Answer: Dove
Which organ in camels stores water?
Answer: No organ; water is stored in body tissues
Which blood cells help in clotting?
Answer: Platelets
Which group of animals has moist skin for respiration?
Answer: Amphibians
Which animal can survive both on land and water?
Answer: Amphibians
Which animal is known for having a pouch?
Answer: Marsupials
Which is the largest amphibian?
Answer: Chinese Giant Salamander
The smallest bird in the world is?
Answer: Bee Hummingbird
Which mammal spends its entire life in water?
Answer: Whale
Which mammal has the thickest fur?
Answer: Sea Otter
Which animal is called a living fossil insect?
Answer: Cockroach
Which mammal is capable of true flight?
Answer: Bat
Which is the most intelligent marine animal?
Answer: Dolphin
Which class of animals produces milk?
Answer: Mammals
Which bird can rotate its head 270 degrees?
Answer: Owl
Which organ in birds stores food temporarily?
Answer: Crop
Which bird is flightless?
Answer: Penguin
Which fish has an electric organ?
Answer: Electric Eel
Which animal produces pearls?
Answer: Oyster
Which insect transmits malaria?
Answer: Female Anopheles Mosquito
Which bird can mimic human speech?
Answer: Parrot
Which is the largest land mammal?
Answer: African Elephant
Which animal’s heart is in its head?
Answer: Shrimp
Which gas do animals exhale?
Answer: Carbon dioxide
Which bird is nocturnal?
Answer: Owl
Which is the fastest flying bird?
Answer: Peregrine Falcon
Which part of the body is affected by rabies?
Answer: Nervous System

Zoological Facts and Concepts MCQs

Which animal has a pouch to carry young?
Answer: Kangaroo
Which is the only mammal capable of sustained flight?
Answer: Bat
Which blood group is universal donor?
Answer: O Negative
Which fish breathes through skin and lungs both?
Answer: Lungfish
Which organ is known as the “control center” of the body?
Answer: Brain
Which organ filters blood in humans?
Answer: Kidney
Which animal has 8 legs?
Answer: Spider
Which insect is a honey producer?
Answer: Honeybee
Which bird is the fastest runner?
Answer: Ostrich
Which animal produces silk?
Answer: Silkworm
Which is the longest bone in the human body?
Answer: Femur
Which blood group is universal recipient?
Answer: AB Positive
Which bird migrates the longest distance?
Answer: Arctic Tern
Which reptile has a shell?
Answer: Turtle
Which mammal lives in Antarctica?
Answer: Seal
Which insect is considered the strongest?
Answer: Dung Beetle
Which amphibian is tailless?
Answer: Frog
Which mammal has no vocal cords?
Answer: Giraffe
Which animal has a long trunk?
Answer: Elephant
Which bird is the national bird of Pakistan?
Answer: Chukar Partridge
Which bird is the fastest swimmer?
Answer: Gentoo Penguin
Which fish is cartilaginous?
Answer: Shark
Which bird has the largest wingspan?
Answer: Wandering Albatross
Which animal has a long sticky tongue to catch insects?
Answer: Anteater
Which mammal is aquatic but breathes air?
Answer: Dolphin
Which animal sleeps the most per day?
Answer: Koala
Which organ do earthworms use for respiration?
Answer: Skin
Which part of the human body is affected by pneumonia?
Answer: Lungs
Which blood cells carry oxygen?
Answer: Red Blood Cells
Which animal has the longest tail?
Answer: Giraffe
Which bird is known for its elaborate courtship dance?
Answer: Peacock
Which is the lightest bone in the human body?
Answer: Stapes
Which organ stores bile?
Answer: Gallbladder
Which hormone regulates blood sugar?
Answer: Insulin
Which animal can survive without drinking water?
Answer: Camel
Which organ is missing in snakes?
Answer: External ears
Which bird is known as the national bird of the USA?
Answer: Bald Eagle
Which animal has fingerprints similar to humans?
Answer: Koala
Which mammal produces the loudest sound?
Answer: Blue Whale
Which organ produces red blood cells?
Answer: Bone Marrow
Which insect has compound eyes?
Answer: Housefly
Which animal carries its home?
Answer: Snail
Which fish can climb trees?
Answer: Mudskipper
Which mammal has the biggest brain?
Answer: Sperm Whale
Which animal has a pouch called marsupium?
Answer: Kangaroo
Which animal is the symbol of World Wildlife Fund (WWF)?
Answer: Giant Panda
Which animal has the longest tongue relative to its body size?
Answer: Chameleon
Which organ do birds use to grind food?
Answer: Gizzard
Which mammal has spines for protection?
Answer: Porcupine
Which fish can inflate itself as defense?
Answer: Pufferfish
Which bird is called the laughing bird?
Answer: Kookaburra
Which organ helps bats in echolocation?
Answer: Ears
Which organ is vestigial in humans?
Answer: Appendix
Which animal has the longest neck?
Answer: Giraffe
Which insect is the primary pollinator?
Answer: Honeybee
1. Which fish migrates upstream to lay eggs?
  Answer: Salmon
2. Which mammal has ivory tusks?
  Answer: Elephant
3. Which animal is known for its hump storing fat?
  Answer: Camel
4. Which fish produces caviar?
  Answer: Sturgeon
5. Which is the most venomous snake?
  Answer: Inland Taipan
6. Which is the largest bat?
  Answer: Flying Fox
7. Which animal has the thickest skin?
  Answer: Rhinoceros
8. Which mammal lays leathery eggs?
  Answer: Echidna
9. Which organ in birds helps in buoyancy?
  Answer: Air sacs
10. Which is the smallest primate?
  Answer: Mouse Lemur
11. Which reptile can detach its tail?
  Answer: Lizard
12. Which fish is flat-bodied and camouflages with sand?
  Answer: Flounder
13. Which animal produces the loudest roar among cats?
  Answer: Lion
14. Which bird can hover in air?
  Answer: Hummingbird
15. Who is known as the father of modern taxonomy?
  Answer: Carl Linnaeus
16. What is the basic unit of classification?
  Answer: Species
17. Which phylum includes animals with stinging cells?
  Answer: Cnidaria
18. The exoskeleton of arthropods is made of?
  Answer: Chitin
19. What type of symmetry do echinoderms exhibit in adults?
  Answer: Radial symmetry
20. Which is the largest living mammal?
  Answer: Blue Whale
21. What is the main nitrogenous waste in birds?
  Answer: Uric acid
22. What is the structural and functional unit of the kidney?
  Answer: Nephron
23. Which blood cells help in clotting?
  Answer: Platelets
24. Which tissue connects muscles to bones?
  Answer: Tendons
25. What is the study of fossils called?
  Answer: Paleontology
26. Who proposed the theory of natural selection?
  Answer: Charles Darwin
27. The mammalian heart has how many chambers?
  Answer: Four
28. What is the largest organ in the human body?
  Answer: Skin
29. Which vitamin is synthesized in the skin in sunlight?
  Answer: Vitamin D
30. What is the main function of hemoglobin?
  Answer: Transport of oxygen
31. What is the basic structural and functional unit of life?
  Answer: Cell
32. Which organ is responsible for detoxification in humans?
  Answer: Liver
33. Which hormone regulates blood sugar level?
  Answer: Insulin
34. Which organelle is called the powerhouse of the cell?
  Answer: Mitochondria
35. What is the study of birds called?
  Answer: Ornithology
36. What is the study of fish called?
  Answer: Ichthyology
37. Which phylum includes vertebrates?
  Answer: Chordata
38. Which part of the brain controls balance and coordination?
  Answer: Cerebellum
39. Which blood group is known as the universal donor?
  Answer: O negative
40. Which blood group is known as the universal recipient?
  Answer: AB positive
41. What is the function of white blood cells?
  Answer: Defense against infections
42. What is the largest artery in the human body?
  Answer: Aorta
43. What is the smallest bone in the human body?
  Answer: Stapes (ear bone)
44. What type of blood circulation is found in humans?
  Answer: Double circulation
45. What is the genetic material in most organisms?
  Answer: DNA
Zoological Classification and Evolution MCQs
1. In RNA, thymine is replaced by?
  Answer: Uracil
2. What is the powerhouse of plant cells?
  Answer: Mitochondria
3. Photosynthesis occurs in which organelle?
  Answer: Chloroplast
4. Which part of the plant transports water?
  Answer: Xylem
5. Which part of the plant transports food?
  Answer: Phloem
6. The largest phylum in the animal kingdom is?
  Answer: Arthropoda
7. Hydra reproduces mainly by?
  Answer: Budding
8. Amoeba moves with the help of?
  Answer: Pseudopodia
9. Which parasite causes malaria?
  Answer: Plasmodium
10. The intermediate host of malarial parasite is?
  Answer: Female Anopheles mosquito
11. Taenia solium belongs to which phylum?
  Answer: Platyhelminthes
12. Ascaris lumbricoides is commonly known as?
  Answer: Roundworm
13. Earthworm belongs to which phylum?
  Answer: Annelida
14. Which mollusk is without a shell?
  Answer: Octopus
15. Which organ helps fish in buoyancy?
  Answer: Swim bladder
16. What is the scientific name of housefly?
  Answer: Musca domestica
17. What is the scientific name of mosquito?
  Answer: Anopheles
18. What is the scientific name of frog?
  Answer: Rana tigrina
19. What is the scientific name of pigeon?
  Answer: Columba livia
20. Which organ in fish helps in maintaining buoyancy?
  Answer: Swim bladder
21. What type of heart do amphibians have?
  Answer: Three-chambered heart
22. Which hormone regulates molting in insects?
  Answer: Ecdysone
23. The process of cell division in gamete formation is called?
  Answer: Meiosis
24. What is the largest gland in the human body?
  Answer: Liver
25. Which animal is known as a “living fossil”?
  Answer: Coelacanth
26. Which vitamin is synthesized in the skin by sunlight?
  Answer: Vitamin D
27. What is the main excretory product in birds?
  Answer: Uric acid
28. What is the function of nephridia in annelids?
  Answer: Excretion
29. What type of symmetry is found in echinoderms?
  Answer: Radial symmetry
30. Which fish can inflate itself as defense?
  Answer: Pufferfish
Zoology Concepts and Research-Based MCQs
1. Which organ is responsible for pumping blood in humans?
  Answer: Heart
2. What is the study of cells called?
  Answer: Cytology
3. Which hormone controls growth in animals?
  Answer: Growth Hormone
4. Which organ in the human body secretes bile?
  Answer: Liver
5. What is the process of removing metabolic wastes called?
  Answer: Excretion
6. Which organ helps in voice production in humans?
  Answer: Larynx
7. What is the function of the small intestine?
  Answer: Absorption of nutrients
8. Which gland is called the master gland?
  Answer: Pituitary gland
9. Which part of the brain controls involuntary actions?
  Answer: Medulla oblongata
10. What is the process of formation of blood cells called?
  Answer: Hematopoiesis
11. Which part of the body produces red blood cells in adults?
  Answer: Bone marrow
12. What is the normal pH of human blood?
  Answer: 7.4
13. Which metal is found in hemoglobin?
  Answer: Iron
14. What is the fluid part of blood called?
  Answer: Plasma
15. Which protein helps in blood clotting?
  Answer: Fibrinogen
16. Which vitamin helps in blood clotting?
  Answer: Vitamin K
17. What is the function of the diaphragm in respiration?
  Answer: Helps in breathing
18. Which part of the brain regulates temperature?
  Answer: Hypothalamus
19. Which organ system includes the kidneys?
  Answer: Excretory system
20. Which is the smallest unit of the nervous system?
  Answer: Neuron
Advanced Animal Science and Physiology MCQs
1. Which blood vessel carries blood from the heart to the lungs?
  Answer: Pulmonary artery
2. Which blood vessel carries blood from lungs to the heart?
  Answer: Pulmonary vein
3. Which organ helps maintain balance in fish?
  Answer: Lateral line
4. What type of skeleton is present in humans?
  Answer: Endoskeleton
5. Which animal has no red blood cells?
  Answer: Earthworm
6. Which blood component transports oxygen?
  Answer: Hemoglobin
7. Which is the largest gland in vertebrates?
  Answer: Liver
8. What is the process of digestion in amoeba called?
  Answer: Phagocytosis
9. Which enzyme digests protein in the stomach?
  Answer: Pepsin
10. What is the pigment in red blood cells?
  Answer: Hemoglobin
11. Which gas is essential for respiration?
  Answer: Oxygen
12. What is the organ of hearing in mammals?
  Answer: Ear
13. Which organ helps maintain body posture?
  Answer: Skeleton
14. Which muscle is involuntary and found in internal organs?
  Answer: Smooth muscle
15. What connects bones to bones?
  Answer: Ligaments
16. Which organ excretes urea in humans?
  Answer: Kidney
17. What is the function of the urinary bladder?
  Answer: Temporary storage of urine
18. What is the study of heredity and variation called?
  Answer: Genetics
19. What is the shape of human red blood cells?
  Answer: Biconcave
20. Which blood cells fight infection?
  Answer: White blood cells
Modern Zoology Objective Questions
1. Which hormone regulates metabolism?
  Answer: Thyroxine
2. What is the scientific study of mammals called?
  Answer: Mammalogy
3. What is the process by which plants lose water?
  Answer: Transpiration
4. What is the function of chlorophyll?
  Answer: Absorbs sunlight for photosynthesis
5. Which organ system transports nutrients and gases?
  Answer: Circulatory system
6. Which organ removes carbon dioxide from blood?
  Answer: Lungs
7. What is the scientific study of reptiles called?
  Answer: Herpetology
8. Which part of the human body contains the most bones?
  Answer: Hands
9. What is the normal body temperature of humans?
  Answer: 37°C
10. Which part of the brain controls emotions?
  Answer: Limbic system
11. Which animal is known as the king of the jungle?
  Answer: Lion
12. Which part of the ear maintains body balance?
  Answer: Semicircular canals
13. What type of blood circulation do fishes have?
  Answer: Single circulation
14. What is the function of the pancreas?
  Answer: Secretes insulin and digestive enzymes
15. Which animal can live longest without water?
  Answer: Camel
16. What is the process of formation of blood cells called?
  Answer: Hematopoiesis
17. Which animal lays eggs but feeds its young with milk?
  Answer: Platypus
18. What is the functional unit of the kidney?
  Answer: Nephron
19. What is the largest mammal on Earth?
  Answer: Blue whale
20. Which part of the human brain regulates body temperature?
  Answer: Hypothalamus
21. What is the main function of mitochondria?
  Answer: Energy production
22. What is the respiratory pigment in insects?
  Answer: Hemocyanin (in some)
23. Which animal has the most advanced brain?
  Answer: Human
24. What is the outer covering of insects called?
  Answer: Cuticle
25. Which class of vertebrates have feathers?
  Answer: Aves
26. What is the process by which insects shed their exoskeleton?
  Answer: Molting
27. What is the mode of reproduction in amoeba?
  Answer: Binary fission
28. What structure in the ear maintains body balance?
  Answer: Semicircular canals
29. What is the name of the male reproductive cell?
  Answer: Sperm
30. What is the connective tissue that connects muscles to bones?
  Answer: Tendon
31. Which vitamin prevents rickets?
  Answer: Vitamin D
32. Which organ secretes bile?
  Answer: Liver
33. What is the process of blood clotting called?
  Answer: Coagulation
34. What type of joint is found in the shoulder?
  Answer: Ball and socket joint
35. What is the function of red blood cells?
  Answer: Carry oxygen

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