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Q51. Number of arm found in octopus-
- A4
- B5
- C6
- D8
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Answer: D) 8
Q52. Connecting link between Annelida and Mollusca is-
- ANeopilina
- BKetoderma
- CDentalium
- DUnio
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Answer: A) Neopilina
Q53. Star fish grouped under phylum-
- AMollusca
- BFishes
- CArthropoda
- DEchinodermata
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Answer: D) Echinodermata
Q54. Aristotle lantern is found in-
- AStar fish
- BBrittle star
- CSea-urchin
- DSea-cucumber
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Answer: C) Sea-urchin
Q55. Honey that has high concentration of sugar does not decay because
- ABacteria cannot survive in an active state as it is totally deprived of oxygen
- BIt contains natural antioxidant that prevents bacterial attack
- CBacteria cannot survive in an active state in a solution of high osmotic strength as water is drawn out
- DNone of these
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Answer: C) Bacteria cannot survive in an active state in a solution of high osmotic strength as water is drawn out
Q56. Seedless fruits are of no use in-
- ACoconut
- BTomato
- CBanana
- DGrape
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Answer: A) Coconut
Q57. Fibres of cotton are obtained from-
- AThe inner fruit wall
- BCalyx
- CSeed coat
- DFruit wall
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Answer: D) Fruit wall
Q58. At which stage in its life cycle does the silkworm yield the fiber of commercial use
- ALarva
- BEgg
- CPupa
- DImago
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Answer: C) Pupa
Q59. Which of the following is true fish ?
- AStar fish
- BJelly fish
- CCuttle fish
- DSea horse & flying
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Answer: D) Sea horse & flying
Q60. Jellyfish are an example of which type of phylum ?
- APhylum-Protozoa
- BPhylum-Ctenophora
- CPhylum-Porifera
- DPhylum-Cnidaria
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Answer: D) Phylum-Cnidaria
Q61. Sea horse is the example of phylum-
- AFishes
- BMammal
- CRepticle
- DMollusca
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Answer: A) Fishes
Q62. Which of the following is a true fish ?
- AFlying fish
- BCry fish
- CCuttle fish
- DSilver fish
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Answer: A) Flying fish
Q63. The mammalian heart is myogenic and it is regulated by nerves. The heartbeat originates from-
- ASinoatrial node
- BQRS wave
- CT wave
- DHepatic portal system
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Answer: A) Sinoatrial node
Q64. Dolphin is an example os which one of following classes ?
- AAves
- BMammal
- CPisces
- DAmphibia
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Answer: B) Mammal
Q65. Hemocyanin is an oxygen-transport metalloprotein in some invertebrate animal. This protein contains :
- AOne copper atom
- BTwo copper atoms
- COne iron atom
- DOne magnesium atom
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Answer: B) Two copper atoms
Q66. How many pair of heart a earthworm have-
- AOne
- BTwo
- CThree
- DFour
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Answer: D) Four
Q67. Among the following, an unmatched group is-
- ASea pen, sea fan, coral and swimming bell
- BCattle fish, star fish, devil fish and squid
- CSea star, sea urchin, sea anemone and Sea Cow
- DGlobe fish, rat fish, gold fish and pipe fish.
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Answer: C) Sea star, sea urchin, sea anemone and Sea Cow
Q68. Anopheles and culex mosquitos can be distinguished with the help of-
- AAntenna
- BMouth part
- CSitting posture
- DFeeding habits
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Answer: C) Sitting posture
Q69. Metamerism is the characteristic feature of the phylum-
- APorifera
- BAnnelida
- CPlatyhelminthes
- DMollusca
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Answer: B) Annelida
Q70. Tube feet are found in-
- ACuttle fish
- BStarfish
- CCat fish
- DSilver fish
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Answer: B) Starfish
Q71. Closed circulatory system is found in-
- ACockroach
- BSnail
- CCuttle fish
- DAll
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Answer: C) Cuttle fish
Q72. Open circulatory system is found in-
- ACockroach
- BEarthworm
- CFishes
- DNone of these
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Answer: A) Cockroach
Q73. Which of the following is not a diploblastic or triploblastic phylum ?
- ACoelenterata
- BPorifera
- CPlatyhelminthes
- DCnidaria
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Answer: B) Porifera
Q74. Nervous system originated first in-
- ATaenia
- BAscaris
- CHydra
- DHirudinaria
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Answer: C) Hydra
Q75. Annelida are advanced over Nematoda in having-
- AMatamaric segmentation
- BClosed circulation
- CTrue coelom
- DAll of these
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Answer: D) All of these