91.
A sponge harmful to oyster industry is
A
Spongilla
B
Euspongia
C
Hyalonema
D
Cliona
Answer :
Cliona
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92.
The middle layer in body wall of porifera is
A
Mesoderm
B
Mesenchyme
C
Mesolea
D
Mesentery
Answer :
Mesenchyme
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93.
What is true about Nereis, Scoprion, Cockroach and silver fish
A
They all belong to the same phylum
B
They all have jointed paired appendages
C
They are posses dorsal heart
D
None of the above
Answer :
They are posses dorsal heart
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94.
Trimethyl amine is excreted by
A
Marine teleosts
B
Molluscs
C
Amphibians
D
None of the above
Answer :
Marine teleosts
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95.
In which of the following animal of echonodermata, arms, spines and pedicillariae are absent
A
Sea cucumber
B
Sea lily
C
Sea star
D
Sea urchin
Answer :
Sea cucumber
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96.
Which of the following animal is called "Typical chordate'
A
Herdmania
B
Amphioxus
C
Balanoglossus
D
Salpa
Answer :
Amphioxus
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97.
Power of regeneration is found in
A
Star - fish
B
Hydra
C
Leucosolenia
D
All of the above
Answer :
All of the above
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98.
Tornaria larva is characteristic of
A
Hemichordates
B
Urochordates
C
Cephalochordates
D
Vertibrates
Answer :
Hemichordates
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99.
In which of the following notochord is present in embryonic stage?
A
All chordates
B
Some chordates
C
Vertebrates
D
Non chordates
Answer :
All chordates
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100.
Typhlops is
A
Sea Snake
B
Glass Snake
C
Blind Snake
D
Grass Snake
Answer :
Blind Snake
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