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Question 211 BIO 101 | LAUTECH 100L
A
Tubipora  
B
Astraea  
C
Helipora  
D
Fungia.  
Explanation.
Share Answer The common name of Tubipora is organpipe coral. It is a marine animal of the class anthozoa (phylum cnidaria). It occurs on reefs in shallow waters of the Indian and Pacific oceans and is characterized by long, parallel upright polyps or stalks, supported by a skeleton of rigid tubes of calcium carbonate.

Correct Option:
A
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Question 212 BIO 101 | LAUTECH 100L
A
pupal stage  
B
larval stage  
C
nymph stage  
D
adult stage.  
Explanation.
Share Answer The mulberry silk moth has been the most commercially important beneficial insect. The silk is obtained by killing the pupa inside the hot water.Then, the silk thread is wound.

Correct Option:
B
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Question 213 BIO 101 | LAUTECH 100L
A
Chiton  
B
Teredo  
C
Umax  
D
Patella.  
Explanation.
Share Answer The common name of Teredo is shipworm which belongs to the class bivalvia of the phylum mollusca. In it, head is absent and foot is wedge – shaped for burrowing. Shell consists oftwo valves. The common name of Chiton is the coat of mail shell (class amphineura), Umax is the grey slug (class gastropoda) and Patella is true limpet (class gastropoda).

Correct Option:
B
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Question 214 BIO 101 | LAUTECH 100L
A
commensalism  
B
symbiosis  
C
predation  
D
parasitism.  
Explanation.
Share Answer Commensalism is the relationship between individuals of two species of which one is benefited and the other is almost unaffected, i.e., neither benefited nor harmed. Sucker fish (Echeneis, Remora) attaches to the underside of a shark by means of its sucker (modified dorsal fin) located on its head. It rides along fixed to the shark, but occasionally detaches itself long enough to capture the fragments falling off from the shark’s prey. Symbiosis is an interaction in which both the interacting species are benefited. Predation is the interaction between two species, one of which captures, kills and eats up the other. Parasitism is an association of two organisms of different sizes and species in which the smaller one is benefited and the larger one is harmed.

Correct Option:
A
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Question 215 BIO 101 | LAUTECH 100L
A
salamander  
B
toad  
C
tortoise  
D
frog.  
Explanation.
Share Answer Tortoise belongs to the class reptilia. Its body is protected by a shell consisting of a dorsal carpace and ventral plastron.

Correct Option:
C
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Question 216 BIO 101 | LAUTECH 100L
A
Amphiuma  
B
Bombina  
C
Necturus  
D
Salamandra.  
Explanation.
Share Answer The fire-bellied toads is a group of eight species of small toads belonging to the genus Bombina. They are found across much of Europe and Asia, staying in water or near the shore. Their name derives from the brightly coloured red or yellow and black patterns on theirventral region, which act as warning to its predators. Amphiuma is a Congo-eel. Necturus is a mud puppy and Salamandra is a salamander.

Correct Option:
B
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Question 217 BIO 101 | LAUTECH 100L
A
hell bender  
B
congo eel  
C
mud puppy  
D
blind worm.  
Explanation.
Share Answer Necturus is a mud puppy belonging to the order urodela of class Amphibia. Hell bender is a large salamander. Amphiuma is a Congo Eel and lchthyophis is a blind worm.

Correct Option:
C
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Question 218 BIO 101 | LAUTECH 100L
A
sea snake  
B
glass snake  
C
blind snake  
D
grass snake.  
Explanation.
Share Answer Typhlops is a genus of blind snakes (non- poisonous snake) found in Europe, Africa, Asia and Central and South America. Sea snake is a poisonous snake while grass snake is a non-poisonous snake. Glass snake is a lizard.

Correct Option:
C
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Question 219 BIO 101 | LAUTECH 100L
A
salivary glands  
B
modified sweat glands  
C
crop  
D
gizzard.  
Explanation.
Share Answer Pigeons are noted for their unique ability to produce “pigeon’s milk”, a soft, cheesy and nourishing secretion, especially during the breeding season. It is formed by the degeneration of the epithelial cells lining the err. It is regurgitated into the mouth of the young birds o -II they are old enough to manage a grain-diet like tlu parents. The pigeon’s milk includes water, fat, protein (casein) and lactose. The milk is produced by both sexes and contains 35 per cent of fat.

Correct Option:
C
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Question 220 BIO 101 | LAUTECH 100L
A
wading  
B
perching  
C
running  
D
catching.  
Explanation.
Share Answer Hind limbs are variously modified for various functions like perching, grasping etc. In the kingfisher they are modified for wading. The legs and toes are exceptionally long and slender and serve to walk over aquatic vegetation or marshes.

Correct Option:
A
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