Zoology MCQs

Zoology MCQs

Try to answer these 150+ Zoology MCQs and check your understanding of Zoology subject. Scroll down and let's begin!

1: ______ are the most diverse group of arthropods.

A.   Centipedes

B.   Crustaceans

C.   Arachnids

D.   Insects

E.   Millipedes

2: _________ are characteristic of jellies.

A.   Collar cells

B.   Choanocytes

C.   Amoebocytes

D.   Lophophores

E.   Cnidocytes

3: _________ is seen in some new world monkeys, but not in any old world monkeys.

A.   Superfamily

B.   Orangutans

C.   A generalized traits

D.   A prehensile tail

E.   Decreased life span

4: A coelom is _____

A.   A cavity filled with fluid

B.   An animal without a body cavity

C.   Development of an apparent head end of an animal

D.   None of these

5: Which of the following factors affect the enzyme activity?

A.   Water

B.   Temperature

C.   Radiation

D.   All

6: Double stranded RNA is:

A.   Nucleus

B.   Hypothetical

C.   Present in mammalian virus

D.   Nucleolus

7: The word Bios means:

A.   Thought

B.   Function

C.   Life

D.   Imagine

8: Which of the following group does not contain animals which are parasite in or on man:

A.   Aschelminthes

B.   Plathylminthes

C.   Protozoa

D.   Coelenterata

9: Ovulation is the process by which:

A.   An egg implants on the wall of the uterus

B.   Sperms are ejected from the gonopore

C.   An egg is ejected from the overy

D.   An egg is produced and brought to maturity

10: Life cycle of plasmodium consict of two hosts:

A.   Sparrow and mosquito

B.   Man and house fly.

C.   Man sparrow

D.   Man and mosquito

11: Oligochaetes do, but polychaetes do not ,possess:

A.   Subneural blood vassels

B.   Notopodial setae

C.   Nonchitinous cuticles

D.   Eyes

12: Ribosomes are not assosiated with:

A.   Golgy apparatus

B.   Plastids

C.   Mitocondria

D.   Endoplasmic recticulam

13: Malaria fever is caused by Protozoan Parasite:

A.   Plasmodium

B.   Tse-Tse fly

C.   Monosystis

D.   Trypnosoma

14: Which of one the following is present in prokeryotic cell:

A.   Ribosomes

B.   Endoplasmic recticulum

C.   Golgi bodies

D.   Mitochondria

15: Progesterone in mammals stimulates the:

A.   Lining of the uterus to break down

B.   Lining of the uterus to break down

C.   Development of the placenta

D.   Mammary glands to secrete milk

16: When mitosis has been completed , the quantity of DNA in each daughter cell nucleus will be:

A.   Half as much as in the parent nucleus

B.   None

C.   Twice as much as in the parent nucleus

D.   The same as in the parent nucleus

17: Golgi bodies in cells appear to function in:

A.   Secration

B.   Gene control

C.   RNA sythesis

D.   Cell division

18: The compound that help to prevent change in pH of a solution when an acid of alkali is added is c/a:

A.   Glucerol

B.   Lyophobic molecules

C.   Buffers

D.   Polymers

19: The secondry sexul characters of male mammals are under the direct control of:

A.   FSH

B.   Testosterone

C.   LH

D.   Estrogen

20: Ribosomes are orginated in:

A.   Endoplasmic recticulam

B.   Nucleolus

C.   Nucleus

D.   Cytoplasm

21: The abnormal, unlimited and uncontrolled cell division causes:

A.   Centrosome

B.   Asphyxia

C.   Tumour

D.   Cancer

22: Sleeping sickness is caused by:

A.   Trypnosoma

B.   Mospuito

C.   Parameccium

D.   House fly

23: A star fish possesses:

A.   A clacareous exoskeleton

B.   A chitinous exoskeleton

C.   A chitinous endoskeleton

D.   A calcareous endoskeleton

24: The mature follicle is called:

A.   Grafian follicle

B.   Ripened follicle

C.   Uterine follicle

D.   Menstrual follicle

25: A true coelom is ______.

A.   Completely lined with tissue derived from endoderm

B.   Completely lined with tissue derived from mesoderm

C.   Formed when a zygote develops into a blastula

D.   Completely lined with tissue derived from ectoderm

26: All arthropods _____.

A.   Have jointed appendages

B.   Molt

C.   Have segmented bodies

D.   Have an exoskeleton or cuticle

E.   All of these

27: Arthropod exoskeletons and mollusc shells both ________.

A.   Help retain moisture in terrestrial habitats

B.   Are comprised of the polysaccharide chitin

C.   Are secreted by the mantle

D.   Completely replace the hydrostatic skeleton

28: Bf skinner discounted the role of _____ in learning.

A.   Reinforcement, punishment

B.   Cognitive processes

C.   Cognitive processes or punishment

D.   Secondary reinforcer; primary reinforcer

29: Both flatworms and roundworms have a body type called _____.

A.   Bilaterally symmetrical

B.   Cytoplasm

C.   A plasma membrane

D.   Bright-field microscope

30: Cartilaginous fish conduct _____

A.   Without a jaw.

B.   Internal fertilization

C.   Mollusks

D.   Bilateral symmetry.

31: Cephalopods are the only molluscs __________.

A.   With a closed circulatory system.

B.   Hermaphroditic individuals exchange sperm.

C.   Tentacles that trap food particles

D.   The chitinous exoskeleton cannot grow

32: Chordate pharyngeal slits appear to have functioned first as _____.

A.   The digestive system's opening.

B.   Suspension-feeding devices.

C.   Components of the jaw.

D.   Gill slits for respiration.

E.   Portions of the inner ear.

33: Clamworms, members of errantia, use their parapodia for ___________.

A.   Defense

B.   Gas exchange

C.   Swimming

D.   All of the above

34: During embryological development, the anus forms before the mouth in _____.

A.   Arthropods

B.   Earthworms

C.   Flatworms

D.   Humans

E.   Slugs

35: Ectoprocts and brachiopods are collectively referred to as __________.

A.   Gastrovascular cavity

B.   Lophophorates

C.   Sea stars

D.   Arthropoda

36: Females are typically larger and more ornamented than males where _____ occurs.

A.   Monogamy

B.   Polyandry

C.   Polygamy

D.   Polygyny

37: Fossils of the earliest tetrapods should _____.

A.   Indicate limited adaptation to life on land

B.   Craniates have a head and neural crest cells.

C.   A sturdy-finned, shallow-water lobe-fin whose appendages had skeletal supports similar to those of terrestrial vertebrates

38: Herd animals typically live in a ________ distribution pattern.

A.   Clumped

B.   Linnaeus

C.   Instinctive

D.   Stabilizing

39: If the blastopore does not form, ________.

A.   The animal would become an acoelomate

B.   The archenteron would not form

C.   The animal would have a gastrovascular cavity

D.   The blastula would not form

E.   Cleavage would not occur in the zygote

40: In amphibians, gases are exchanged through the gills, lungs, and/or _______________.

A.   Skin

B.   Face

C.   Scalp

D.   Hands

E.   Feet

41: Mollusks group of organs is called a _____

A.   Acoelomates.

B.   Arthropoda

C.   Visceral mass

D.   Bilateral symmetry

42: Monkeys underwent massive _______ in the pliocene and pleistocene.

A.   Extinction

B.   Migration

C.   Diversification

D.   Adaptive radiation

43: Most chordates are ________.

A.   Vertebrates

B.   Invertebrates

C.   Tunicates

D.   Lancelets

44: Negative reinforcement in operant conditioning _____.

A.   The weakening of the conditioned response when the unconditioned stimulus is absent.

B.   Is the type of reinforcement in which organisms learn rapidly

C.   Has nothing to do with good and bad behavior

D.   Increases the frequency of a behavior

45: Pearl earrings come from _____.

A.   Echinoderms

B.   Arthropods

C.   Mollusks

D.   Sponges

A.   Euglena

B.   Choanocyte

C.   Chytrid

D.   Choanoflagellate

E.   Nucleariid

47: The substance that makes up the nematode cuticle is ________.

A.   Peptidoglycan

B.   Cellulose

C.   Collagen

D.   Chitin

48: The transmission first triggers the _____.

A.   Action of the sodium-potassium pump

B.   Opening of voltage-gated sodium channels and the diffusion of sodium ions into the neuron

C.   Opening of voltage-gated sodium channels and the diffusion of sodium ions out of the neuron

D.   Opening of voltage-gated potassium channels and the diffusion of potassium ions out of the neuron

E.   Opening of voltage-gated potassium channels and the diffusion of potassium ions into the neuron

49: The three major clades of bilaterian animals are the __________.

A.   Ecdysozoa,

B.   Lophotrochozoa

C.   Deuterstomia

D.   All of these

50: The difference between protostomes and deuterostomes is _____

A.   Protostomes develop a mouth first and then an anus

B.   Circulatory systems.

C.   Nervous systems.

D.   Embryological development