Chordate Zoology -MCQ-06 General account and comparative anatomy

 Chordate Zoology -MCQ-06

General account and comparative anatomy

MULTIPLE CHOICE QUESTIONS

Chapter 17. Digestive system

1. In gut, the lamina propria is the..
a. The innermost layer
b. outermost layer
C. middle layer
d. next to outermost layer

2. The innermost layer of gut, the muscularis mucosae is a
a. a thin layer of smooth muscles
b. a thin layer of striped muscles
c.a thick layer of smooth muscles
d. a thin layer of striped muscles

3. Submucosa is usually the thickest layer, but does not have
a. Elastic connective tissue fibres
b. scattered fatty tissue a.
c. muscles

4. Myenteric plexus of Auerbach is present in the
a. heart
b. gut
c. liver
d. spleen

5. The serosa is in fact the
a. parietal layer
b. endodermal layer
c. ectodermal layer
d. visceral layer

6. In Branchiostoma the alimentary canal is suited for
a. ciliary feeding
b. filter feeding
c. chewing
d. grasping

7. In Cyclostomes a pair of pigmented sacs embedded in the hypobranchial muscle probably represents the
a. liver
b. spleen
c. pancreas
d. salivary glands

8. In case of ammocoete larva, the endostyle at the end of the larval life becomes reduced to a closed sacs and eventually changes into
a. thymus
b. pancreas
c. liver
d. thyroid

9. In Scoliodon, the side walls of the pharynx are pierced by......... pairs of gill slits
a. 5
b. 6
c. 7
d. 9

10 . Squalene is
a. the shark liver fat
b. the shark gonadal fat
C. the fat of frog
d. the fat lungs of ray

x x

11. Nearly all the amphibia are
a. herbivorous
b. carnivorous
c. insectivorous
d. omnivorous

12. In frog, digestion begins
a. before the food is passed into stomach
b. does not begin until the food is passed into stomach
c. does not begin until food is passed into intestine

13. The stomach in frog is
a. simple tube
b. complex tube
c. pyloric end is narrow
d. pyloric end is broad

14. Frogs like a variety of. ..... as food
a. birds
b. fishes
c. arthropods
d. molluscs

15. In comparison to fishes and amphibia, the oesophagus in reptiles is
a. always longer
b. always smaller
c. of equal size
d. absent

16. Because of carnivorous diet, the liver in reptiles is
a long
b. short
c. medium

17. An ileocolic valve lies at the
a. entrance of stomach
b. entrance of small intestine
c. entrance of large intestine
d. exit of large intestine

18. The cloacal chamber in all reptiles has subdivisions that do not include
a. coprodaeum
b. proclodacum
c. stomodacum
d. urodacum

19. Liver of sand lizards is
a. unilobed structure
b. bilobed structure
c. trilobed structure
d. multilobed structure

20. The alimentary canal in crocodilians differs from the lizard in
a. having gizzard
b. large intestine
c. trilobed pharynx
d. undivided cloaca milk is

x x

21. The amount of proteins in pigeon's .
a. 13.3-18.8%
b. 3.3-8.8 %
c. 33-88%
d. 23.4-46.8%

22. Gizzard in birds is a part of
a. pharynx
b. stomach
c. intestine
d. pancreas

23. The number of bile ducts in birds is
a. one
b. two
c. three
d. four

24. Ingiuvies is another name of
a. stomach
b. сrор
c. gizzard
d. liver

25. The small intestine in pigeon is marked from the large intestine by means of
a. an enlargement
b. a constriction
C. a pair of colic caccae
d. two pairs of colic caecac

26. Bursa fabricii is
a. an ectodermal derivative
b. an endodermal derivaive
c. a mesodermal derivative
d. a proctodacal derivative

27. The length of oesophagus in man is about
a. 20-25 cm
b. 25-30 cm
c. 30-50 cm
d. 50-60 cm

28. The lining of oesophagus is of
a. stratified epithelium
b. columnar epithelium
c. cuboidal epithelium
d. glandular epithelium

29. The HCI in stomach is secreted by the
a. neck cells
b. zymogen cells
c. oxyntic cells
d. mesodermal cells

30. Stomach of camel lacks
a. omasum
b. reticulum
C. rumen
d. abomasum

x x

Chapter 18. Respiratory system

1. The end products of carbohydrates digestion are finally potential energy to give up their
a. oxidized
b. reduced
c. hydrolysed
d. hydrogenated

2. For an efficient exchange of gases at the respiratory surface
a. the passage of free or dissolved air should be obstructed
b. the passage of free or dissolved air should be unobstructed there should be a large surface area exposed to gaseous exchange
d. there should a small surface area exposed to gaseous exchange
e. a & c
f.. a& b

3. In Branchiostoma, exchange of gases takes place mainly through
a. skin
b. lung
c. pharynx
d. stomach

4. Folds in the lining of visceral clefts and rich supply of blood in them change the simple wall of clefts into
a. gills
b. lungs
c. air sacs
d. none of the above

5. A gill pouch of lamprey or fish communicates with the pharynx by an
a. external branchial aperture
b. internal branchial aperture
c. internal gills

6. Characteristic gill type in the cartilaginous fishes is called
a. lamellibranch
b. pleurobranch
c. podobranch

7. Inter-branchial septa projecting beyond the external gill openings work as
a. branchial basket
b. branchial valves
c. branchial channel
d. buccopharyngeal valves

8. The hyoid acts in cartilaginous fishes to support b. only 1st hemibranch
a. only a posterior hemibranch
c. only 4th hemibranch
d. none of the above

9. In Elasmobranchs, the usual number of functional gill slits is
a. 6
b. 5
c. 4
d. 7

10. The gill slits in Hypotremata are
a. on the lateral sides
b. on the ventral side
C. on the dorsal side
d. a& b

x x

11. The number of gill arches supporting the gills in Labeo rohita is
a. 5
b. 4
c. 6
d. indefinite

12. The operculum is internally lined with a flexible a. branchiostegal fold
b. branchiostegal ray
c. basibranchial bone

13. Epi-and cerato-branchial bear dorsally a double row of small bony processes called
a. gill rakers
b. gill rays
c. gill filaments
d. b&c

14. The two chambers in the swim bladder are connected by
a. broad ductus communicans
b. narrow ductus communicans
c. none of the above

15. In Protopterus, hyoid and first two branchial arches are
a. hemibranchs
b. holobranchs
c. abranchs

16. Pneumatic duct connects the
a. two chambers of the swim bladder
b. the posterior chamber with the
C. none of the above
d. oesophagus

17. Weberian Ossicles were discovered by
a. Darwin
b. Linnacus
c.Weber

18. Swim Bladder is always
a. double
b. single
c. a & b
d. i and ii

19. The swim bladder in Lepisosteus is
a. unpaired
b. paired
c.absent

20. Air bladder in Neoceratodus lies
a. dorsal to the alimentary canal
b. ventral to the alimentary canal
c. lateral to the alimentary canal

x x

21. Mouth is used for breathing air in
a. Lepisosteus
b. Polypterus
c. Symbranchus

22. Rectum is used as accessory breathing organ in
a. Protopterus
b. Lepidosteus
c. Callichihys

23. In tailed amphibia, larynx is of
a. branched and complex type
b. simple
c. absent
d. primitive type

24. The oxygen uptake in frogs by mean of skin is
a. 100 ml/kg
b. 25 ml/kg
c. 50 ml/kg

25. In frogs lungs are used for breathing with buccal breathing
a. simultaneously
b. individually
c. never used
x x

Chapter 19. Blood and Lymph

1. Blood differs from connective tissue in having.
a. Fluid matrix
b. Free cells
c. Cells do not-secrete matrix
d. All the above
e. None of the above

2. The fluid supernatant obtained after centrifuging blood is called
a. plasma
b. haemoglobin
c. matrix
d. None of the above

3. Ratio of red blood cells to blood plasma is called.
a. haemopoiesis
b. haematocrit
c. coagulation
d. none of the above

4. The plasma proteins are
a. albumins
b. globulins
c. fibrinogen
d. all the above

5. Serum is a plasma from which
a. fibrinogen has been removed
b. haemoglobin has been removed
c. water has been removed. none
d. of the above

6. The number of erythrocytes in a normal human male is
a. 1 million/ml
b. 2 million/ml
c. 5 million/ml
d. 10 million/ml

7. Molecular weight of Haemoglobin is
a. 6,800
b. 50,000
c. 45,000
d. 1,00,000

8. Circulating platelets are
a. biconvex
b. biconcave
c. flat
d. none of the above

9. The primary cells of the bone marrow from which all kinds of blood corpuscles can be derived are called
a. myeloblasts
b. haemocytoblasts
c. megakaryocytes
d. monocytes

10. Granulocytes are
a. neutrophils
b. eosinophils
c. basophils
d. all of the above
e. none of the above

x x

11. Leprosy is treated with
a. penicillin
b. streptomycin
c. dapsone
d. forticone

12. The life span of lymphocytes is
a. 24 days
b. 10 days
c. 24 hours
d. 48 hours

13. Clotting can be artificially prevented by releasing the free.
a. calcium ion
b. magnesium ions
c. potassium ions
d. carbon ions

14. A cross between Rh positive man and Rh negative woman will result into
a. Rh negative child
b. Rh positive child
c. Child will die
d. Child will be without any Rh group


x x
Chapter 20. Circulatory system

1. The capillaries are the thinnest vessels roughly with diameter of
a. 4/1000-12/1000 mm
b. 1/1000-2/1000 mm
c. 5/100-20/1000 mm
d. 10/1000-30/1000 mm

2.The intima of blood vessels is composed of
a. flattened polygonal cells
b. rounded cuboidal cells
c. compact ovoid cells
d. simple broad cells

3. Semilunar valves are present in all the
a. arteries
b. capillaries
c. large veins
d. medium sized veins

4. The flow of blood in capillaries is regulated by
a. heart
b. semilunar valves
c. vessel walls
d. small precapillary sphincter muscles

5. In the embryo, blood vessels develop from the mesenchyme of
a. ectodermal origin
b. endodermal origin
c. mesodermal origin
d. both ecto and endodermal origin

6. Sinuses are enlarged arteries
a. arteris
b. veins
C. nerves
d. heart

7. Heart is a
a. mesodermal derivative
b. ectodermal derivative
c. endodermal derivative
d. both meso- and endodermal derivative

8. Paired aortic arches arise from the ventral aorta and communicate with the
a. heart
b. dorsal aortac
c. lungs
d. liver

9. The region where veins enter the heart becomes
a. trunchus arteriosus
b. sinus venosus
c. ventricles
d. auricles

10. First indication of the aortic arches in the embryo is the development of
a. dorsal aorta
b. ventral aorta
c. heart
d. auricles

x x

11. The maximum number of aortic arches in a vertebrate is
a. 6 pairs
b. 8 pairs
c. 10 pair
d. 12 pairs

12. In Petromyzon the number of aortic arches is
a. 6 pairs
b. 8 pairs
c.10 pairs
d. 12 pairs

13. The first pair of aortic arches to disappear in Scoliodon during development is
a. mandibular
b. hyodean
C. branchial II
d. branchial III

14. In amphibia, the aortic arches that degenerate early are
a.1-2
b. 2-3
C. 3-4
d. 4-5

15. The carotid arch in amphibians represents arch
a. second
b. third
C. fourth
d. fifth

16. The ducti caroticus are
a. first and second arches
b. second and third arches
c. third and fourth arches
d. fifth and sixth arches

17. In tailless amphibia, the arch that directly connects with the lateral aorta and gives off a branch to the developing lungs is
a. 6th arch
b. 4th arch
C. 2nd arch
d. 1st arch

18. In reptiles, the right and left systemic arches are connected through a
a. foramen of Panizac
b. ductus cuverei
C. ductus caroticus
d. sinu auricular node

19. In birds the three arches which persist during adulthood are
a. 1,2,5
b. 2,3,4
c. 1,3,6
d. 3,4,6

20. The left systemic in birds persists as
a. ligamentum arteriosum
b. ligamentum Botalli
c. left subclavian artery
d. right subclavian artery

x x

21. Ductus arteriosus in mammals in the adults is reduced to
a. ligamentum arteriosum
b. ligamentum Botalli
C. left subclavian artery
d. right subclavian artery

22. Conus arteriosus in fishes is a
a. thin walled non-muscular tube
b. thick walled muscular tube
C.thin walled muscular tube
d. thick walled non-muscular tube.

23. The ventral aorta in Scoliodon soon after its emergence bifurcates into
a. innominate arteries
b. afferent arteries
c. efferent arteries
d. coracoids.

24. Pre-trematic and post-trematic arteries draining each gill pouch unite dorsally to form an
a. efficient branchial loop
b. allerent branchial loop
c. innominate arteries
d. common carotids

25. The number of vessels that arise from the lateral hypobranchial artery is
a 2
b. 4
c. 6
d. 8

26. Truncus in frogs is demarcated from the conus by
a. an enlargement
b. transverse groove
C. constriction
d. branching

27. In the left auricle of frog, the pulmonary vein jointly opens into a dorso-ventrally compressed chamber called the
a. sinus venosus
b. ventricle
C.conus
d. pulmonary sinus

28. Systemo-carotid channel in frogs further divides both vertically and horizontally into
a. 2 divisions
b. 3 divisions
c. 4 divisions
d. 5 divisions

29. The inner surfaces of the auricles in Uromastix are raised into a network of muscular ridges called
a. columnae corneae
b. musculi pectonate
c. chordac tendinae

30. The annulus fibrosum is present in the heart of
a amphibians
b. fishes
c . reptiles
d. birds

31. Spleen is absent in
a. fishes
b. cyclostomes
C. birds
d. mammals








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