Chordate Zoology -MCQ-02 General account and comparative anatomy

 Chordate Zoology -MCQ-02

General account and comparative anatomy

MULTIPLE CHOICE QUESTIONS

Chapter 4. Cephalochordata

1. The actual body wall of tunicates is...
a. test
b. mantle
c. peritoneum
edmond

2. The nervous system in tunicates consists of...
a. double ventral ganglion
b. single ventral ganglion
c. single dorsal ganglion
d. double dorsal ganglion

3. The excretion in tunicates is carried out by
a.nephrocytes
b. erythrocytes
c. leucocytes

4. Tunicates have been placed in........ classes
a. two
b. one
c. three
d. four

5. Tunicin is a....
a. protein
b. lipid
c. carbohydrate
d. cellulose

6. In Enterogona...
a. only cerebral eye is present
b. cerebral eye and statocyst are present
c. only statocyst is present

7. The gill slits in Thalacea are ..
a. divided by external longitudinal bars
b. not divided by longitudinal bars
c.none of these

8. Thaliacea is divided into....
a. 4 orders
b. 3 orders
c. 5 orders
d. 2 orders

9. Larvacea is a...
a.Sub Phylum
b. Class
c. Order
d. Family

10. Herdmania is......
a. solitary
b. colonial
c.none of these

x x

11. Branchial aperture in Herdmania denotes....
a. dorsal side
b. ventral side
c. anterior side
d. posterior side

12. Gelatinous matrix of test in Herdmania carries.
a. epidermal cells
b. endodermal cells
c. mesodermal cells

13. Besides Indian seas, species of Herdmania are found in (which is wrong)
a. Pacific
b. Atlantic
c. Carribeans
d.none of these

14. The size of Herdmania varies greatly and fully grown specimens may be..
a. 2-4 cms long
b.6-12 cms long
c. 20-40 cms long
d. 60-100 cms long

15. Foot may be as large as...............length of the body.
a. one half
b. one third
c.two third
d. equal to the

16. The length of branchial siphon may be..
a. 1 cm
b. 2 cms
c. 5 cms
d. 6 cms

17. The number of lips formed by the test in the two openings of Herdmania is.
a. four
b. five
c. six 18
d. eight

18. The branchial aperture of the animal denotes

a. the posterior end
b. the anterior end
c.dorsal side
d. ventral side

19 . The number of types of cells recognized in the test is ..
a. 5
b. 6
c. 7
d. 8

20. The length of microsclere is..
a.20-40μm
b. 40-60 μm
c.40-80 μm
d. 80-100 μm

x x

21. The spindle like megascleres have rings of minute spines. The number of rings is
a 20-60
b. 0-20
c.100-200
d. 200-300

22. Body wall or the mantle is
a. thick in the antero-dorsal part
b. thick in the postero-dorsal part
c. thin in the antero-dorsal part
d. none of these

23. Which one of the following is not present in the histology of the mantle of Herdmania
a.outer epidermis
b. basement membrane
c. mesenchyme
d. inner epidermis

24. In Herdmania, a considerable part of viscera lies into a cavity formed of ectoderm and is known as..
a. branchium
b. atrium
c. siphon
d. pharyngeal sac

25. Of the 2 peripharyngeal bands, the anterior ciliated band is a complete ring, but posterior band is incomplete at the..
a. dorsal median end
b. ventral median end
c. dorsal and ventral median ends
d. dorsal and ventral lateral ends

26. The number of stigmata on each side of branchial sac of Herdmania is ..
a. 10,000
b. 100,000
c. 200,000
d. 300,000

27. The transverse interstigmatal bars cross the stigmata.
a ventrally
b. laterally
c. horizontally
d. transversely

28. The amount of water the Phallusia can pass through the body in 24 hrs. is..
a. 50 litres
b. 75 litres
c. 173 litres
d. 200 litres

29. Blow of Herdmania is ..
a. transparent
b. mucilaginous
c. thick
d. none of these

30. The length of pericardium in Herdmania is ..
a.7 cms
b. 10 cms
c. 20 cms
d. 25 cms

x x

31. The two ends of the heart lead into ..
a. aortae
b. gills
c. skin
d. liver

32. The main gastro-intestinal test branch passes into the test on the...
a. gastro intestinal vessel
b. dorsal test vessel
c. ventral test vessel
d. lateral test vessel

33. The side walls of the branchial sac are separated by a narrow groove...
a. endostyle
b. notochord
c. pharynx
d. dorsal lamina

34. Dorsally, the lateral walls of the branchial sac are separated by the
a. endostyle
b. notochord
c. dorsal lamina
d. languets

35. Branchial sac leads into ...
a. oesophagus
b. pharynx
c. intestine
d. stomach

36. The posterior half of the stomach contains..
a. languets
b. papillae
c. pyloric glands
d. dorsal lamina

37. The number of ducts through which liver pours its secretions into stomach is
a. 5-6
b. 6-7
c.10-11
d. 20-21

38. Excretory organ of Herdmania is ..
a. a protonephridium
b. a metanephridium
c. the neural gland
d. the nuchal gland

39. Neural gland secretes excretory material appearing as
a. watery substances
b. pigmented granules
c. mucilaginous substances
d. solid material

40. It has been suggested that the supraneural gland is a receptor organ serving to control
a. respiration
b. osmoregulation
c. feeding
d. light reception

x x

41. The ventral complex does not contain..
a. notochord
b. dorsal tubercle
c. dorsal ganglion
d. neural gland

42. The left gonad of Herdmania lies between the two limbs of the intestine, but the righ gonad lies in..
a. branchial siphon
b. atrial siphon
c. dorsal to pericardium
d. ventral to pericardium

43. Free swimming tadpole like ascidian larva of Herdmania is about ..
a. 1.5 mm long
b. 1.5 cm long
c. 15 cm long
d. 15.5 cm long

44. Clavelina belongs to the class..
a. Ascidiacea
b. Thaliacea
c. Larvacea
d. None of these

45. In Ciona the epicardial diverticula are meant to help in ...
a. feeding
b. reproduction
c. circulation of water
d. excretion

46. Clavelina is known for its peculiar
a. size
b. shape
c. colour
d. budding

x x

Chapter 5.Hemichordata

1. Which of the following characteristics does not pertain to Hemichordates?
a. Worm like
b. Coelomates
c. Marine
d. Fresh water

2. Balanoglossus is commonly known as ..
a. acorn worm
b. foot worm
c. corn worm
d. none of the above

3. The cylinderical body of Balanoglossus is...
a. 3-10 cms long
b. 9-45 cms long
c. 50-100 cms long
d. 100-150 cms long

4. The body of Balanoglossus does not have
a. proboscis
b. collar
c. trunk
d. tail

5. In Balanoglossus immediately beneath the epidermis is..
a. basement membrane
b. a thick muscle layer
c. a thick nervous layer
d. a dermis

6. In Balanoglossus the main movement is...
a. burrowing
b. floating
c. swimming
d. crawling

7. Stiffened tissues in the Balanoglossus form..
a. musculature
b. body wall
c. exoskeleton
d. endoskeleton

8. Buccal diverticulum in Balanoglossus is
a.notochord
b. preoral extension of gut buccal tube
c. flattened cells
d. neural tube

9. The number of dorso-laterally placed U-shaped gill slits or pores in the wall of pharynx of Balanoglossus is..
a. 20-30
b. d. 50-60
c. 40-50
30-40

10. The pharyngeal faces of tongue bars and gill septa are lined with ..
a. small ciliated cells
b. tall ciliated cells
c. glandular cells only
d. tall ciliated and glandular cells

x x

11. The branchial sac of Balanoglossus is lined with
a. tall cells
b. small cells
c. Flattend cell
d. rounded cells

12. Pharynx in Balanoglossus is followed by..
a. Stomach
b. oesophagus
c. intestine
d. branchial sac

13. Oesophagus in Balanoglossus ends in intestine and is not differentiated into .
a. hepatic region
b. post hepatic region
c. non hepatic region

14. Acorn worm is a...
a. filter feeder
b. ciliary feeder
c. chewer

15. The circulatory system of Balanoglossus comprises.............main vessels
a. 2
b. 3
c. 3
d. 6

16. The nervous system of Balanoglossus consists of ...
a.complex network of fibrils lying immediately outside the basement membrane
b. complex network of fibrils lying immediately inside the basement membrane
c. simple network of fibrils lying immediately outside the basement membrane
d. simple network of fibrils lying immediately inside the basement membrane

17. Fertilized egg gives rise to a free swimming ciliated larva called..
a. bipinnaria
b. tornaria
c.torula
d. blastula

18. Which of the following characteristics do not show relationship of Balanoglossus and echinoderm because both
a. are coelomate and the coelom is an enterocoel
b. can be derived from dipleurula larva
c. nervous system is largely confined to skin
d. notochord is present

19. Which of the following is not a characteristic of Pterobranchiata
a.Free living
b. Sessile
c. Tube dwelling
d. Have few or no gill

x x
Chapter 6. Vertebrate -1 (Aganthostomes)

1. In the temperate zone, the number of species of Petromyzon is
a. 2
b. 3
c. 4
d. 5

2. The skin of Petromyzon is not...
a. soft
b. hard
c. slimy
d. without an exoskeleton

3. On the dorsal side of the head of Petromyzon is ..
a. mouth
b. amedian nasal aperture
c. a gill slit
d. auditory opening

4. On either side of the head behind the eyes are present a series of rounded gill slits whose number is...
a. 5
b. 6
c. 7
d. 8

5. On the ventral side of the trunk of Petromyzon lies
a. mouth
b. anus
c. gill slit
d. nasal aperture

6. Lampreys are....
a. burrowers
b. free swimmers
c. tube dwellers
d. bottom dwellers

7. Marine lamprey breeds ..
a.once every year
b. twice a year
c. thrice a year
d. once in life

8. The larval lamprey is called...
a. tornaria
b. torula
c. dipleurula
d. ammocoets

9. At the end of the larval life, the posterior pact of the endostyle becomes coiled up forming a
a. thymus
b. liver
c. pancreas
d. thyroid

10. Agnthans are the first vertebrates that appeared in the....
a. Ordovician
b. Silurian
c. Permian
d. Tertian

x x

11. Hag fish has a cylinderical body about
a.20 cm long
b. 45 cm long
c. 100 cm long
d. 150 cm long

12. The number of gill pouches that open by tubes into the pharynx of hag fish is..
a. 6
b. 7
c. 5
d. 9

13. Agnathans were the first vertebrates that appeared in...
a. Ordovician period
b. Silurian period
c. Devonian period
d. Permian period

14. The Ostracoderms dwindled and finally disappeared at the end of
a. Ordovician period
b. Silurian period
c. Devonian period
d. Peruvian period

15. Subclass Monorhina does not include..
a. Osteostraci
b. Anaspida
c. Petromyzontiformes
d. Coelopsida

16. Hemicyclapsis belonged to order
a. Osteostraci
b. Petromyzontiformes
c. Myxiniformes
d. Anaspida

17. Which of the following characteristics were not there in anaspids
a. They had ventral eyes
b. They were probably active swimmers
c. They had pectoral spikes
d. They had streamlined body
d. Anaspida

18. Myxiniformes is regarded as the degenerate
a. Cyclapsids
b. Pteraspids
c. Anaspids
d. Pterolepis

19. Which of the following characteristics is not there in Myxiniformes
a. The eyes are well developed
b. Dorsal fin is nearly abesnt
c. Branchial basket is poorly formed
d. The eggs are large

20. Heterostreans did not have..
a heavy shield of armour
b. trunk projecting over the mouth
c. bizarre spines
d. dorsal eyes









View, comments and share.......
x x