SET-2-026 Branchiostoma is  
(A) carmivorous
(B) herbivorous
(C) ciliary feeder
(D) parasite

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Answer: (C) ciliary feeder

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SET-2-027 Which part of Branchiostoma represent liver?
(A) Foregut 
(B) Hindgut
(C) Midgut
(D) Midgut diverticulum

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Answer: (D) Midgut diverticulum

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SET-2-028 Which of the following show metamerically segmented musculature?
(A) Herdmania 
(B) Petromyzon
(C) Amphioxus
(D) Pyrosoma

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Answer: (C) Amphioxus

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SET-2-029 Test of ascidian is
(A) protective
(B) sensory 
(C) respiratory
(D) All of these

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Answer: (D) All of these

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SET-2-030 A free-swimming urochordates is
(A) Herdmania
(B) Ciona
(C) Amphioxus
(D) Balanogiossus

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Answer: (C) Amphioxus

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SET-2-031 Which one is absent in Branchiostoma  
(A) heart 
(B) gill sits
(C) notochord
(D) dorsal hollow nerve cord

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Answer: (A) heart 

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SET-2-032 The anterior part of Amphioxus is
(A) oral hood 
(B) rostrum
(C) mouth
(D) Both (A) and (b)

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Answer: (B) rostrum

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SET-2-033 A trial and branchial apertures of Herdmania are surrounded by
(A) two lips
(B) four lips
(C) three lips
(D) five lips

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Answer: (B) four lips

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SET-2-034 Part of Herdmania embedded in sand is  
(A) test
(B) foot
(C) tunic
(D) Both (A) and (c)

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Answer: (B) foot

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SET-2-035 In cephalochordates, the coelom is
(A) reduced 
(B) absent
(C) schizocoel
(D) lined by ectoderm

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Answer: (A) reduced 

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SET-2-036 Notochord like structure of numichordates is  
(A) protochord
(B) stomochord
(C) pallium
(D) glomerulus

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Answer: (B) stomochord

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SET-2-037 Which is not a vertebrate?
(A) Fish 
(B) Amphioxus
(C) Oryctolagus
(D) Sparrow

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Answer: (B) Amphioxus

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SET-2-038 Connecting link between echinoderms and chordates is
(A) Peripatus 
(B) Balanoglossus
(C) Archaeopteryx
(D) None of these

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Answer: (B) Balanoglossus

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SET-2-039 The echinoderms, hemichordates and chordates had which of the following larva as common ancestral form?
(A) Tornaria
(B) Dipleurula
(C) Bipinnaria
(D) Trochophore

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Answer: (B) Dipleurula

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SET-2-040 In hemichordates, respiration takes place through the
(A) general body surface
(B) spiracles
(C) gills
(D) trachea

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Answer: (C) gills

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SET-2-041 Echidna and Ornithorhynclus are the connecting links between
(A) mammals and amphibians
(B) reptiles and amphibians
(C) amphibians and aves
(D) reptiles and mammals

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Answer: (D) reptiles and mammals

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SET-2-042 Cephalochordates have a notochord, which
(A) extends from head to tail region
(B) is persistent throughout their life
(C) Both (A) and (b)
(D) None of the above

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Answer: (C) Both (A) and (b)

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SET-2-043 Regarding the hemichordates, which of the following is true?
(A) Sexes are separate
(B) Fertilisation is external
(C) Development is indirect
(D) All of these

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Answer: (D) All of these

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SET-2-044 Which of the following is a characteristic of chordates?
(A) Closed circulatory system
(B) Post anal tail
(C) Both (A) and (b)
(D) Dorsal heart

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Answer: (C) Both (A) and (b)

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SET-2-045 Which one of the following statements is true?
(A) All chordates are vertebrates
(B) All vertebrates are chordates
(C) All chordates are not vertebrates
(D) Both (B) and (c)

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Answer: (D) Both (B) and (c)

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SET-2-046 Jawless fishes are placed under the division 
(A) Agnatha
(B) Gnathostomata
(C) Pisces
(D) Tetrapoda

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Answer: (A) Agnatha

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SET-2-047 Which of the following set includes jawless fishes?
(A) Petromyzon and Exocoetus
(B) Myxine and Pristis
(C) Petromyzon and Myxine
(D) All of the above

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Answer: (C) Petromyzon and Myxine

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SET-2-048 In class-Chondrichthyes, the mouth is located ventrally and the teeth are modified placoid scales, which are
(A) forwardly directed
(B) backwardly directed
(C) sparsely arranged
(D) None of the above

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Answer: (B) backwardly directed

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SET-2-049 The character common to both cartilaginous and bony fishes, is the presence of
(A) two chambered heart
(B) terminal mouth and placoid scales on skin
(C) air bladder
(D) external fertilisation

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Answer: (A) two chambered heart

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SET-2-050 Latimeria
(A) is coelacanth
(B) has two dorsal fins
(C) possesses two pairs of external nares
(D) All of the above

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Answer: (A) is coelacanth

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