Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace AEB 202 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions
Do not waste time on a question you don’t know
Move as fast as possible and starting with questions that don’t have calculation first to save time
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70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

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Created on April 21, 2025 By

Aruwaji Philip

AEB 202

1 / 40

1. Indicate the bone modified into the malleus in the mammalian middle ear.

A. Quadrate

B. Maxilla

C. Zygomatic

D. Articular

2 / 40

2. Name the marsupial native to both Australia and Tasmania.

A. Bandicoot

B. Tasmanian devil

C. Koala

D. Opossum

3 / 40

3. Describe the significance of the zygomatic arch in mammalian evolution.

A. Supports spinal flexibility

B. Regulates hormone secretion

C. Provides heat insulation

D. Anchors masseter muscles for chewing

4 / 40

4. State the function of vibrissae in mammals.

A. Produce heat

B. Support digestion

C. Serve sensory roles

D. Aid circulation

5 / 40

5. Identify the mammalian order that includes whales and dolphins.

A. Lagomorpha

B. Carnivora

C. Cetacea

D. Rodentia

6 / 40

6. Identify the group of mammals that lay eggs.

A. Eutherians

B. Monotremes

C. Placental mammals

D. Marsupials

7 / 40

7. Define the function of the dorsal nerve cord.

A. Digestion

B. Coordination and control

C. Secretion

D. Excretion

8 / 40

8. Point out the characteristic that is absent in adult mammals but present in embryos

A. Post-anal tail

B. Nerve cord

C. Brain

D. Pharyngeal slits

9 / 40

9. Identify the body system that becomes highly specialized in vertebrates.

A. Nervous system

B. Muscular system

C. Reproductive system

D. Excretory system

10 / 40

10. Highlight the muscle responsible for jaw closure in mammals.

A. Biceps

B. Trapezius

C. Sternomastoid

D. Temporalis

11 / 40

11. Point out the structure linking the two cerebral hemispheres in eutherians.

A. Corpus callosum

B. Pituitary gland

C. Medulla oblongata

D. Olfactory bulb

12 / 40

12. Identify the part of the brain that is highly folded in some mammals.

A. Medulla

B. Cerebellum

C. Cerebral cortex

D. Optic chiasma

13 / 40

13. Identify the part of the brain that is highly folded in some mammals.

A. Cerebral cortex

B. Optic chiasma

C. Cerebellum

D. Medulla

14 / 40

14. Describe the role of the dentary bone in mammals.

A. Acts as a middle ear bone

B. Forms part of the shoulder

C. Forms the eye socket

D. Composes the entire lower jaw

15 / 40

15. Highlight the skeletal feature that distinguishes mammals from other vertebrates.

A. Jaw made of multiple bones

B. Single dentary bone and three middle ear bones

C. Presence of only the stapes in the ear

D. Lack of jaw joint

16 / 40

16. Indicate the structural feature that gives the phylum Chordata its name.

A. Pharyngeal pouches

B. Dorsal nerve cord

C. Post-anal tail

D. Notochord

17 / 40

17. Indicate the structure that allows mammals to chew and breathe simultaneously.

A. Zygomatic arch

B. Interclavicle

C. Optic lobe

D. Secondary palate

18 / 40

18. Express the fate of the notochord in most adult vertebrates.

A. Converts into heart

B. Becomes the vertebral column

C. Develops into kidneys

D. Persists unchanged

19 / 40

19. Identify the function of pharyngeal gill slits in lower chordates.

A. Sound production

B. Reproduction

C. Water filtration and respiration

D. Fat storage

20 / 40

20. State the key trait shared by all synapsids.

A. Single temporal skull opening

B. Endochondral skeleton

C. Absence of zygomatic arch

D. Two jaw joints

21 / 40

21. Choose the correct classification for lancelets.

A. Vertebrates

B. Cephalochordates

C. Tunicates

D. Amphibians

22 / 40

22. Describe the environment where protochordates are typically found.

A. Terrestrial soil

B. Freshwater lakes

C. Marine habitats

D. Arctic ice

23 / 40

23. Describe the location of the notochord in relation to the nerve cord.

A. Beneath

B. Lateral

C. Ventral

D. Posterior

24 / 40

24. Highlight the function of the post-anal tail in early chordates.

A. Propulsion

B. Sound production

C. Waste excretion

D. Vision enhancement

25 / 40

25. Describe the shape of the nerve cord in chordates.

A. Triangular

B. Flat and wide

C. Conical

D. Hollow and tubular

26 / 40

26. Describe the location of the notochord in relation to the nerve cord.

A. Posterior

B. Beneath

C. Lateral

D. Ventral

27 / 40

27. Indicate the function of the neurocoel.

A. Secretes mucus

B. Cavity within the nerve cord

C. Filters waste

D. Stores enzymes

28 / 40

28. Choose the vertebrate group with erythrocytes lacking nuclei.

A. Mammals

B. Birds

C. Reptiles

D. Amphibians

29 / 40

29. Indicate the bone modified into the malleus in the mammalian middle ear.

A. Maxilla

B. Zygomatic

C. Articular

D. Quadrate

30 / 40

30. State the germ layer origin of the notochord.

A. Endoderm

B. Ectoderm

C. Mesoderm

D. Hypoblast

31 / 40

31. Name the structure derived from the dorsal ectodermal neural plate.

A. Gut

B. Nerve cord

C. Notochord

D. Blood vessels

32 / 40

32. Indicate the term for animals without a notochord.

A. Vertebrates

B. Echinoderms

C. Invertebrates

D. Protostomes

33 / 40

33. Indicate the mammalian group possessing the most complex placenta

A. Eutherians

B. Amphibians

C. Monotremes

D. Marsupials

34 / 40

34. Highlight the structure that becomes the vertebral column in vertebrates.

A. Neural tube

B. Post-anal tail

C. Notochord

D. Pharyngeal slit

35 / 40

35. Express the main distinction between vertebrates and protochordates.

A. Presence of eyes

B. Oxygen usage

C. Circulatory system

D. Presence of a vertebral column

36 / 40

36. State the key trait shared by all synapsids.

A. Single temporal skull opening

B. Endochondral skeleton

C. Two jaw joints

D. Absence of zygomatic arch

37 / 40

37. Name the bone absent in the shoulder girdle of therian mammals.

A. Femur

B. Procoracoid

C. Scapula

D. Humerus

38 / 40

38. Express the primary function of sebaceous glands.

A. Generate heat

B. Secrete milk

C. Control body odor

D. Provide water resistance

39 / 40

39. Identify the gland responsible for producing sweat in primates.

A. Eccrine gland

B. Mammary gland

C. Apocrine gland

D. Sebaceous gland

40 / 40

40. Indicate the most obvious external feature shared by all mammals.

A. Hair

B. Gills

C. Scales

D. Feathers

Your score is

The average score is 38%

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