1. What is the outermost layer of the skin in vertebrates called?
a. Dermis
b. Epidermis
c. Hypodermis
d. Mesoderm
Answer: b. Epidermis
2. Which type of symmetry is exhibited by animals that can be divided into equal halves along any plane, leading to mirror images?
a. Radial symmetry
b. Asymmetry
c. Bilateral symmetry
d. Spherical symmetry
Answer: c. Bilateral symmetry
3. What is the function of the antennae in insects?
a. Locomotion
b. Sensory perception
c. Digestion
d. Respiration
Answer: b. Sensory perception
4. In vertebrates, which structure is responsible for filtering and purifying blood?
a. Kidney
b. Liver
c. Spleen
d. Heart
Answer: c. Spleen
5. What is the main function of the exoskeleton in arthropods?
a. Support and protection
b. Sensory perception
c. Gas exchange
d. Regulation of body temperature
Answer: a. Support and protection
6. Which class of vertebrates is characterized by a bony skeleton and scales covering their skin?
a. Amphibians
b. Reptiles
c. Mammals
d. Birds
Answer: b. Reptiles
7. In the anatomy of a bird, what is the function of the syrinx?
a. Breathing
b. Digestion
c. Egg production
d. Vocalization
Answer: d. Vocalization
8. What is the primary function of the gills in aquatic animals like fish?
a. Filter feeding
b. Respiration
c. Thermoregulation
d. Sensory perception
Answer: b. Respiration
9. Which organ in mollusks secretes the shell for protection?
a. Mantle
b. Radula
c. Foot
d. Tentacle
Answer: a. Mantle
10. In the skeletal system of mammals, what is the function of the marrow within bones?
a. Blood cell production
b. Synthesis of hormones
c. Energy storage
d. Protection of internal organs
Answer: a. Blood cell production
11. Which structure in insects is responsible for sensing vibrations in the air?
a. Antennae
b. Compound eyes
c. Tympanum
d. Proboscis
Answer: c. Tympanum
12. What is the function of the lateral line system in fish?
a. Vision
b. Hearing
c. Smell
d. Detection of water movement
Answer: d. Detection of water movement
13. In mammals, what is the purpose of the diaphragm in the respiratory system?
a. Pumping blood
b. Filtration of air
c. Regulation of body temperature
d. Separation of thoracic and abdominal cavities
Answer: d. Separation of thoracic and abdominal cavities
14. Which part of the digestive system is responsible for the absorption of water and minerals in vertebrates?
a. Stomach
b. Small intestine
c. Large intestine
d. Esophagus
Answer: c. Large intestine
15. What is the specialized structure in birds that grinds food for digestion?
a. Gizzard
b. Crop
c. Proventriculus
d. Cecum
Answer: a. Gizzard
16. In the nervous system of animals, what is the function of the cerebellum?
a. Coordination of muscle movements
b. Regulation of body temperature
c. Memory storage
d. Hormone synthesis
Answer: a. Coordination of muscle movements
17. What is the purpose of the swim bladder in fish?
a. Buoyancy control
b. Gas exchange
c. Digestion
d. Protection
Answer: a. Buoyancy control
18. Which class of animals is characterized by a notochord and a dorsal hollow nerve cord during their embryonic development?
a. Mammals
b. Birds
c. Fish
d. Amphibians
Answer: c. Fish
19. In arachnids, what is the function of spinnerets?
a. Sensory perception
b. Venom production
c. Silk production
d. Gas exchange
Answer: c. Silk production
20. What is the primary function of the nephron in the excretory system of vertebrates?
a. Filtration of blood
b. Synthesis of urine
c. Regulation of body temperature
d. Digestion of proteins
Answer: b. Synthesis of urine
21. Which type of joints are found in frogs’ pectoral and pelvic girdles from the following ?
a. Hinge
b. pivot
c. saddle
d. Ball and Socket
Answer – d, Ball and socket
22. The animal without red blood cells is
a. earthworm
b. snake
c. peacock
d. Frog
Answer – a, earthworm
23. Which of the following has an open vascular system?
a. Rat
b. Human
c. Birds
d. Cockroach
Answer – d, cockroach
24. Body of a Tapeworm is said to be
a. Unsegmented
b. Pseudosegmented
c. Metamerically segmented
d. None of these
Answer – a, Unsegmented
25. Chewing mouth parts are found in:
a. Cockroach
b. Fishes
c. Earthworm
d. Birds
Answer – a, Cockroach
26. Tendons and ligaments are made of
a. Special connective tissue
b. Epithelial tissues
c. Dense regular connective tissue
d. Loose conductive tissue
Answer – c, Dense regular connective tissue
27. Where are intercalated discs found?
a. Skeletal muscles
b. Tendons
c. Spinal cord
d. Cardiac muscles
Answer – d, Cardiac muscles
28. Certain mummies are well preserved even after hundreds of years because
a. Yellow elastic fibers are intact
b. Yellow elastic fibers are destroyed
c. White fibrous tissues are entire
d. White fibrous tissues are destroyed
Answer – c, White fibrous tissues are intact
29. ____________is primarily present at sites where filtration and diffusion occur.
a. Simple columnar epithelia
b. Bone marrow
c. Simple squamous epithelium
d. None of the above
Answer – c, Simple squamous epithelium
30. Chromatophores are found in ______ _
a. Squids
b. Humans
c. Birds
d. Dogs
Answer – a, Squids
31. The primary protein in plasma is ______
a. Ovalbumin
b. Albumin
c. Desmin
d. None of the above
Answer – b, Albumin
32. The most significant quantity of extracellular materials is found in _____
a. Nerve fibers
b. Bone tissue
c. Areolar tissue
d. None of the above
Answer – b, Bone tissue
33. Pheretima is a genus of __________
a. Crickets
b. Earthworms
c. Rose
d. None of the above
Answer – b, earthworms
34. What type of glands are sebaceous glands?
a. Exocrine Gland
b. Endocrine Gland
c. Pineal Gland
d. None of the above
Answer – a, Exocrine Gland
35. Regeneration is the most limited in ____
a. Liver cells
b. Brain cells
c. Stem cells
d. None of the above
Answer – b, Brain cells
36. Smooth muscles are
a. Involuntary
b. Voluntary
c. Striated
d. None of the above
Answer – a, Involuntary
37. Macrophages are a type of
a. White blood cell
b. Stem cell
c. Fat cells
d. Bone cell
Answer – a, White blood cell