Which class do frogs belong to?
a) Mammalia
b) Aves
c) Reptilia
d) Amphibia
Answer: d) Amphibia
What is the term for the study of insects?
a) Ornithology
b) Entomology
c) Herpetology
d) Ichthyology
Answer: b) Entomology
Which of the following is not a characteristic of mammals?
a) Hair or fur
b) Mammary glands
c) Laying eggs
d) Warm-blooded
Answer: c) Laying eggs
What type of symmetry do starfish exhibit?
a) Bilateral symmetry
b) Radial symmetry
c) Asymmetry
d) Spherical symmetry
Answer: b) Radial symmetry
Which organ is primarily responsible for detoxification in vertebrates?
a) Kidney
b) Heart
c) Liver
d) Lungs
Answer: c) Liver
What is the term for animals that eat both plants and animals?
a) Herbivores
b) Carnivores
c) Omnivores
d) Detritivores
Answer: c) Omnivores
Which part of the brain is responsible for regulating balance and coordination?
a) Cerebrum
b) Cerebellum
c) Medulla oblongata
d) Hypothalamus
Answer: b) Cerebellum
What is the main function of red blood cells in vertebrates?
a) Fight infection
b) Transport oxygen
c) Clot blood
d) Produce hormones
Answer: b) Transport oxygen
Which phylum do jellyfish belong to?
a) Arthropoda
b) Mollusca
c) Echinodermata
d) Cnidaria
Answer: d) Cnidaria
What is the primary excretory product of birds?
a) Urea
b) Ammonia
c) Uric acid
d) Nitrogen gas
Answer: c) Uric acid
Which animal is known for its ability to regenerate lost body parts?
a) Starfish
b) Elephant
c) Rabbit
d) Shark
Answer: a) Starfish
What is the term for the protective outer layer of a mollusk shell?
a) Mantle
b) Operculum
c) Exoskeleton
d) Carapace
Answer: a) Mantle
Which group of animals is characterized by having a backbone?
a) Invertebrates
b) Vertebrates
c) Arthropods
d) Mollusks
Answer: b) Vertebrates
Which hormone regulates blood sugar levels in mammals?
a) Insulin
b) Adrenaline
c) Thyroxine
d) Estrogen
Answer: a) Insulin
What is the name of the largest part of the human brain?
a) Cerebrum
b) Cerebellum
c) Brainstem
d) Limbic system
Answer: a) Cerebrum
Which structure is responsible for producing bile in the body?
a) Pancreas
b) Gallbladder
c) Liver
d) Stomach
Answer: c) Liver
What is the main function of the gills in fish?
a) Filter food particles
b) Regulate buoyancy
c) Extract oxygen from water
d) Sense vibrations
Answer: c) Extract oxygen from water
Which of the following is not a type of muscle tissue?
a) Skeletal
b) Cardiac
c) Smooth
d) Nervous
Answer: d) Nervous
What is the term for the change of an organism from a larval stage to an adult stage?
a) Metamorphosis
b) Mutation
c) Meiosis
d) Migration
Answer: a) Metamorphosis
Which class do birds belong to?
a) Mammalia
b) Reptilia
c) Aves
d) Amphibia
Answer: c) Aves
Which type of blood vessel carries blood away from the heart?
a) Vein
b) Artery
c) Capillary
d) Venule
Answer: b) Artery
What is the term for the symbiotic relationship where both organisms benefit?
a) Parasitism
b) Commensalism
c) Mutualism
d) Predation
Answer: c) Mutualism
Which of the following animals is an example of an endotherm?
a) Lizard
b) Frog
c) Human
d) Snake
Answer: c) Human
Which organ in mammals is primarily responsible for filtering waste from the blood?
a) Liver
b) Lungs
c) Kidneys
d) Heart
Answer: c) Kidneys
What is the term for the study of the distribution of animals and plants in different geographical areas?
a) Ecology
b) Ethology
c) Biogeography
d) Taxonomy
Answer: c) Biogeography
Which part of the nervous system controls voluntary actions?
a) Autonomic nervous system
b) Sympathetic nervous system
c) Parasympathetic nervous system
d) Somatic nervous system
Answer: d) Somatic nervous system
Which marine animal is known for its bioluminescence?
a) Dolphin
b) Jellyfish
c) Sea turtle
d) Octopus
Answer: b) Jellyfish
What is the term for the seasonal movement of animals from one region to another?
a) Hibernation
b) Migration
c) Estivation
d) Torpor
Answer: b) Migration
Which structure protects the spinal cord?
a) Ribs
b) Skull
c) Vertebral column
d) Pelvis
Answer: c) Vertebral column
What is the main component of the exoskeleton in arthropods?
a) Collagen
b) Cellulose
c) Chitin
d) Keratin
Answer: c) Chitin
Which group of animals is known for having a three-chambered heart?
a) Mammals
b) Birds
c) Amphibians
d) Fish
Answer: c) Amphibians
What is the function of the mitochondria in animal cells?
a) Protein synthesis
b) Lipid production
c) Energy production
d) DNA replication
Answer: c) Energy production
Which animal is an example of a marsupial?
a) Elephant
b) Kangaroo
c) Lion
d) Whale
Answer: b) Kangaroo
What is the term for a behavior that an animal is born with and does not have to learn?
a) Learned behavior
b) Instinct
c) Habit
d) Conditioning
Answer: b) Instinct
Which structure in birds is responsible for grinding food?
a) Crop
b) Gizzard
c) Stomach
d) Intestine
Answer: b) Gizzard
Which class of vertebrates do sharks belong to?
a) Osteichthyes
b) Chondrichthyes
c) Amphibia
d) Reptilia
Answer: b) Chondrichthyes
What is the main difference between prokaryotic and eukaryotic cells?
a) Presence of a cell wall
b) Presence of a nucleus
c) Presence of ribosomes
d) Presence of DNA
Answer: b) Presence of a nucleus
Which type of symmetry do humans exhibit?
a) Radial symmetry
b) Bilateral symmetry
c) Asymmetry
d) Spherical symmetry
Answer: b) Bilateral symmetry
What is the term for the developmental stage of an insect that undergoes complete metamorphosis?
a) Nymph
b) Larva
c) Pupa
d) Adult
Answer: c) Pupa
Which of the following animals is ectothermic?
a) Dolphin
b) Sparrow
c) Frog
d) Human
Answer: c) Frog
Which gland in mammals is responsible for regulating metabolism?
a) Thyroid gland
b) Adrenal gland
c) Pituitary gland
d) Pancreas
Answer: a) Thyroid gland
What is the primary function of white blood cells?
a) Transport oxygen
b) Produce hormones
c) Fight infections
d) Clot blood
Answer: c) Fight infections
Which structure in the cell is responsible for packaging and transporting proteins?
a) Nucleus
b) Ribosome
c) Golgi apparatus
d) Endoplasmic reticulum
Answer: c) Golgi apparatus
Which animal is known for having a highly developed sense of echolocation?
a) Owl
b) Bat
c) Dog
d) Elephant
Answer: b) Bat
What is the term for the external skeleton that supports and protects an animal’s body?
a) Endoskeleton
b) Exoskeleton
c) Cartilage
d) Bone
Answer: b) Exoskeleton
Which organ in mammals is primarily responsible for gas exchange?
a) Heart
b) Liver
c) Lungs
d) Kidneys
Answer: c) Lungs
What is the function of the nephron in the kidney?
a) Filter blood
b) Produce bile
c) Absorb nutrients
d) Store urine
Answer: a) Filter blood
Which group of animals lays amniotic eggs?
a) Amphibians
b) Fish
c) Reptiles
d) Mollusks
Answer: c) Reptiles
Which hormone is responsible for regulating the sleep-wake cycle in mammals?
a) Insulin
b) Melatonin
c) Adrenaline
d) Estrogen
Answer: b) Melatonin
What is the main role of the large intestine in the digestive system?
a) Absorb nutrients
b) Break down proteins
c) Absorb water
d) Secrete digestive enzymes
Answer: c) Absorb water