Hemichordates and Chordates

1. which character is only present hemichordates.
(a) Notochord                 (b) Dorsal nerve chord
(c) Gill slits                       (d) postanal tail

2. Hemichordates bodies are:
(a) soft worm like           (b) hard
(c) sponges like               (d) having scale

3. Classes of hemichordates are:
(a) three                             (b) two
(c) five                                 (d) four

4. Class Enteropneusta have species
(a) 80                                   (b) 90
(c) 70                                   (d) 60

5. Class Enteropneusta includes:
(a) Acorn worm               (b) ascidiacea
(c) rhabdopleura             (d) thaliacea

6. Planctosphearoidea have poorely developed:
(a) nervous system         (b) ceolom
(c) gut                                (d) cavity

7.It has only one specie
(a) planctosphearoidea  (b) pterobranchia
(c) sorbaseae                     (d) chordata

8. Number of species in chordata :
(a) 45000                              (b) 4500
(c) 45000000                        (d) 450

9.Tunicates are:
(a) urochordata                  (b)hemichordata

10.The muscular contraction of the body wall produce water currents in

(a) class Ascidiacea             (b) Class thaliacea
(d) class appendiculariae  (d) class soberacea

11. How many classes of sub phylum vertebra
(a) 9                                         (b) 10
(c) 8                                         (d) 6

12. Characteristics of class myxini are
(a) having jaws                    (b) having no paie appendages
(c) worm like bodies           (d) cartelagenous skeleton

13. class osteichthyes includes
(a) Hagfish                              (b) Lampreys
(c)Bony fish                           (d) Skates

14. Amphibions have moisture skin because of:
(a) mucous                              (b) keratinized protein
(c)Glands                                 (d) Adhesive Glands

15. Class reptilia have:
(a) dry skin                               (b) moist skin
(c) epidermal scale                 (d) both (a) and (c)

16. These are endothermic
(a) aves                                      (b) Reptiles
(c) both (a) and (d)                 (d) mammals

17. Hemichordata have:
(a) open circulatory system   (b) closed circulatory system
(c) incomplete digestive tract  (d) having gut

18. The size of enteropneusta is:
(a) 10 to 40 cm                            (b) 10 to 50 cm
(c) 10 to 20 cm                            (c) 10 to 60 cm

19.How many species of acorn worms are:
(a) 60                                              (b) 50
(c) 80                                              (d) 70

20.Acorn worm body is divided into_____ parts.
(a) 3                                                  (b) 5
(c) 4                                                  (d) 2

21.The enteropneusts common name is because of:
(a) appearane ofproboscis        (b) gut like
(c) flattened body                        (d) U shaped

22. Collar is present to the proboscis:
(a) Posterior                                  (b) ventrally
(c) dorsally                                     (d) anterior

23. The mouth of acorn worm is located between:
(a) Collar and trunk
(b) trunk and proboscis
(c) darsally
(d) proboscis and collar

24 Phyrungeal slits are the opening between:
(a) phyranx and the outside of body
(b) collar and trunk
(c) trunk only
(d) proboscis and trunk

25. cilia and mucous help acorn worm in:
(a) digestion                             (b) movement
(c) gland                                    (d) feeding

26. The digestive tract of enteropnests is simple:
(a) U shaped                           (b) tube like
(c) gut                                      (d) none of these

27. Which gland secrete enzyme to digest the food in acorn worm?
(a) Hepatic sac                        (b) thyroid gland
(c) ciliary gland                        (d) pituiary gland

28. In acorn worm fecal material is called:
(a) Casting                                 (b) eutely
(c) ecdysis                                  (d) none of these

29. The gases are exchanged in acorn worm by
(a) active transport                 (b) osmosis
(c) through skin                        (d)diffusion

30. Planula like larvae is present in:
(a) chordata                               (b) pterobranchia
(c) enteropnesta                       (d) hemichordata

31.Unique chracters in chordata are:
(a) notochord and postanal tail
(b) phyrngeal slits
(c) dorsal tubular nerve chord
(d) all of these

32. The chordate have :
(a) complete digestive tract
(b) dorsal nerve chord
(c) open circulatory system
(d) none of these

33. The divertcula of chordates are called:
(a) phyrangela pouch
(b) phyrangela slit
(c) postanal tail
(d) nerve chord

34. Another name of tunicate is:
(a) notochords                 (b) seasquirts
(c) acorn worm                (d) aves

35. What is the largest class of urochordata?
(a) thaliaciae                      (b) vertebra
(c) sorberacea                    (d) ascidia

36. Function of siphon is:
(a) for attacment               (b) locomotion
(c) allow sea water to circulate through body
(d) feeding

37.Root like extension of tunic are called
(a) oral siphon                       (b)stolens
(c) atrial siphon                     (d) casting

38. tunics are composed by:
(a) blood vessels                  (b) proteins,salts,cellulose
(c) blood cells                        (d) extensions

39. How hydroskeleton is produced in tunicates?
(a) by body wall epithilium  (b) elasticity
(c) hydrostatic skeleton       (d) sea water confined to internal chamber

40. Where is the nervous system of tunicates?
(a) in hydrostatic skeleton     (b) in pharynx
(c) in body wall                         (d) in ganglion

41. tunicates are sensitive to:
(a) chemical stimuli                 (b) mechanical stimuli
(c) sensory organ                     (d) both (a) and (b)

42. what are stigmas?
(a) pharyngeal slits                   (b) tenticles
(c) pharynx                                  (d) cavity

43. in tunicates,which groove is present in pharynx?
(a) mucous sheath                       (b) dorsal ciliated groove
(c) ventral ciliated groove         (d) oral siphon

44. tinicate heart is present at:
(a) pharynx                                      (b) larynx
(c) ventral region                            (c) dorsal region

45. whichbiood plasma is colourless?
(a) reptiles blood plasma            (b) tunicate blood plasma
(c) acorn worm blood plasma    (d) none of these

46. which gland have excretory function in intestine?
(a) sebacious gland                        (b)pyloric gland
(c) thyroid gland                             (d) pitiatary gland

47. urochordata are
(a) parthenogenetic                         (b) amictic
(c) dioecious                                      (d) monoecious

48. sub phylum cephalochordata are called
(a) lancelets                                          (b) tunicates
(c) acorn worm                                     (d) trophic

49. cephalochordates consists of_____ genera:
(a) 2                                                            (b) 3
(c) 4                                                             (d)5

50. Number of species of cephalochordates are
(a) 45                                                          (b) 55
(c) 65                                                          (d) 52

51. size of cephalochordates is
(a) upto 50 cm               (b)upto 60 cm
(c) upto 70 cm                 (d) upto 30 cm

52. which type of larva is developed in sub phylum urochordata
(a) worm like              (b) larva like
(c) tadpole like               (d) snail like

53. atrium is a _____
(a) vacum                        (b) cavity
(c) ceolom                        (d)chamber

54. digestive tract of urochordates is
(a) tube like                                      (b) U shaped
(c) gut like                                      (d) incomplete

55. cephalochordates are______like animals
(a) worm                                    (b) snail
(c) larva                                       (d) tadpole

56. the shape cephalochordates areare
(a) flattened                                (b) streamline
(c) rounded                                  (d) none of these

57. in cephalochordata, notochords are used for
(a) burrowing                              (b) movement
(c) feeding                                     (d) support

58. cephalochordates lack
(a) true heart                               (b) true cavity
(c) true ceolom                             (d) none of these

59. cephalochordates includes
(a) 4 genera                              (b) 2 genera
(c) 3                         (d) 5

60. Ciliated finger like projections hang from the ventral side of the oral hood is called:
(a) cirri                                     (b) trophi
(c) eutely                                   (d) ecdysis

61. cirri is used in
(a) feeding                            (b) movement
(c) support                           (d) none of these

62. in cephalochordates mouth opens into a
(a) larynx                                   (b) aboral
(c) large pharynx                     (d) oral surface

63. numerous pairs of pharyngeal slits are present in
(a) parynx                            (b) cirri
(c) atrium                                 (d) larynx

64. the opening from the atrium to the outside is called
(a) aorta                        (b) atrium
(c)atriopore                         (d) cirri

65. gametes are shed into the
(a) atrium                     (b) aorta
(c) pharynx                      (c) larynx

66. peodomorphosis take place in
(a) animal kingdom               (b) fungi
(c) plant                            (d) protists

67. vertebra have________ classes
(a) 8                    (b) 9            (c) 10             (d) 20

68. vertebrates and chordrates have bony
(a) endoskeleton                  (b) exoskeleton
(c) hydrostatic skeleton       (d) none

69. jawless fishes were common in
(a) ordovician period                 (b) jurrasic period
(c)carboniferous                    (d) none

70. cephalochordata are
(a) dioecious                               (b) monoecious
(c) parthenogenetic                           (d) none