183899
Addition of a trace of thyroxine or iodine in water containing tadpoles will
1 keep them in larval stage
2 hasten their metamorphosis
3 slow down their metamorphosis
4 kill the tadpoles
Explanation:
B The addition of thyroxine to water will accelerate metamorphosis. Thyroxine regulates tissue differentiation and metamorphosis of tadpole larval in frogs. Gundernatch (1912) proved that the metamorphosis of tadpoles into adult frogs is controlled by thyroxine.
AIPMT-1990
Structural Organization in Animals
183900
Tadpole's tail is a/an:
1 excretory organ
2 attachment organ
3 respiratory organ
4 locomotory organ
Explanation:
D Tadpole's tail is a locomotory organ. Tadpoles have a notochord but except at the base of the tail where a few vertebral elements develop. The tadpole's tail completely lacks either osseous or cartilaginous elements.
AFMC-2003
Structural Organization in Animals
183901
Shifting of ammonotelism to ureotelism is seen in
1 fishes
2 frog
3 protopterus
4 snake
Explanation:
B Shifting of ammonotelism to ureotelism is seen in frog.In the tadpolesthe end product of nitrogen metabolism is ammonia which is easily disposed of by diffusion in water. After metamorphosishowever the frogs excrete most of their nitrogenous waste in the form of urea and only small amount as ammonia.
WB JEE-2007
Structural Organization in Animals
183902
The centum in typical centrum of frog is
1 Amphicoelous
2 Procoelous
3 Heterocoelus
4 None of the above
Explanation:
A Amphicoelous ventebrae has a centrum with a concavity on both the ends i.e the posterior and the anterior side.
CMC Vellore-2015
Structural Organization in Animals
183903
Salivary glands are absent in:
1 Blatta orientalis
2 Anopheles
3 Musca domestica
4 Rana hexadactyla
Explanation:
D In Rana hexadactylasalivary glands are absentBlattaMusca and Anopheles are insects in which salivary glands are present. Salivary glands lubricate your mouthhelp you swallow and aid in digestion.
183899
Addition of a trace of thyroxine or iodine in water containing tadpoles will
1 keep them in larval stage
2 hasten their metamorphosis
3 slow down their metamorphosis
4 kill the tadpoles
Explanation:
B The addition of thyroxine to water will accelerate metamorphosis. Thyroxine regulates tissue differentiation and metamorphosis of tadpole larval in frogs. Gundernatch (1912) proved that the metamorphosis of tadpoles into adult frogs is controlled by thyroxine.
AIPMT-1990
Structural Organization in Animals
183900
Tadpole's tail is a/an:
1 excretory organ
2 attachment organ
3 respiratory organ
4 locomotory organ
Explanation:
D Tadpole's tail is a locomotory organ. Tadpoles have a notochord but except at the base of the tail where a few vertebral elements develop. The tadpole's tail completely lacks either osseous or cartilaginous elements.
AFMC-2003
Structural Organization in Animals
183901
Shifting of ammonotelism to ureotelism is seen in
1 fishes
2 frog
3 protopterus
4 snake
Explanation:
B Shifting of ammonotelism to ureotelism is seen in frog.In the tadpolesthe end product of nitrogen metabolism is ammonia which is easily disposed of by diffusion in water. After metamorphosishowever the frogs excrete most of their nitrogenous waste in the form of urea and only small amount as ammonia.
WB JEE-2007
Structural Organization in Animals
183902
The centum in typical centrum of frog is
1 Amphicoelous
2 Procoelous
3 Heterocoelus
4 None of the above
Explanation:
A Amphicoelous ventebrae has a centrum with a concavity on both the ends i.e the posterior and the anterior side.
CMC Vellore-2015
Structural Organization in Animals
183903
Salivary glands are absent in:
1 Blatta orientalis
2 Anopheles
3 Musca domestica
4 Rana hexadactyla
Explanation:
D In Rana hexadactylasalivary glands are absentBlattaMusca and Anopheles are insects in which salivary glands are present. Salivary glands lubricate your mouthhelp you swallow and aid in digestion.
183899
Addition of a trace of thyroxine or iodine in water containing tadpoles will
1 keep them in larval stage
2 hasten their metamorphosis
3 slow down their metamorphosis
4 kill the tadpoles
Explanation:
B The addition of thyroxine to water will accelerate metamorphosis. Thyroxine regulates tissue differentiation and metamorphosis of tadpole larval in frogs. Gundernatch (1912) proved that the metamorphosis of tadpoles into adult frogs is controlled by thyroxine.
AIPMT-1990
Structural Organization in Animals
183900
Tadpole's tail is a/an:
1 excretory organ
2 attachment organ
3 respiratory organ
4 locomotory organ
Explanation:
D Tadpole's tail is a locomotory organ. Tadpoles have a notochord but except at the base of the tail where a few vertebral elements develop. The tadpole's tail completely lacks either osseous or cartilaginous elements.
AFMC-2003
Structural Organization in Animals
183901
Shifting of ammonotelism to ureotelism is seen in
1 fishes
2 frog
3 protopterus
4 snake
Explanation:
B Shifting of ammonotelism to ureotelism is seen in frog.In the tadpolesthe end product of nitrogen metabolism is ammonia which is easily disposed of by diffusion in water. After metamorphosishowever the frogs excrete most of their nitrogenous waste in the form of urea and only small amount as ammonia.
WB JEE-2007
Structural Organization in Animals
183902
The centum in typical centrum of frog is
1 Amphicoelous
2 Procoelous
3 Heterocoelus
4 None of the above
Explanation:
A Amphicoelous ventebrae has a centrum with a concavity on both the ends i.e the posterior and the anterior side.
CMC Vellore-2015
Structural Organization in Animals
183903
Salivary glands are absent in:
1 Blatta orientalis
2 Anopheles
3 Musca domestica
4 Rana hexadactyla
Explanation:
D In Rana hexadactylasalivary glands are absentBlattaMusca and Anopheles are insects in which salivary glands are present. Salivary glands lubricate your mouthhelp you swallow and aid in digestion.
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Structural Organization in Animals
183899
Addition of a trace of thyroxine or iodine in water containing tadpoles will
1 keep them in larval stage
2 hasten their metamorphosis
3 slow down their metamorphosis
4 kill the tadpoles
Explanation:
B The addition of thyroxine to water will accelerate metamorphosis. Thyroxine regulates tissue differentiation and metamorphosis of tadpole larval in frogs. Gundernatch (1912) proved that the metamorphosis of tadpoles into adult frogs is controlled by thyroxine.
AIPMT-1990
Structural Organization in Animals
183900
Tadpole's tail is a/an:
1 excretory organ
2 attachment organ
3 respiratory organ
4 locomotory organ
Explanation:
D Tadpole's tail is a locomotory organ. Tadpoles have a notochord but except at the base of the tail where a few vertebral elements develop. The tadpole's tail completely lacks either osseous or cartilaginous elements.
AFMC-2003
Structural Organization in Animals
183901
Shifting of ammonotelism to ureotelism is seen in
1 fishes
2 frog
3 protopterus
4 snake
Explanation:
B Shifting of ammonotelism to ureotelism is seen in frog.In the tadpolesthe end product of nitrogen metabolism is ammonia which is easily disposed of by diffusion in water. After metamorphosishowever the frogs excrete most of their nitrogenous waste in the form of urea and only small amount as ammonia.
WB JEE-2007
Structural Organization in Animals
183902
The centum in typical centrum of frog is
1 Amphicoelous
2 Procoelous
3 Heterocoelus
4 None of the above
Explanation:
A Amphicoelous ventebrae has a centrum with a concavity on both the ends i.e the posterior and the anterior side.
CMC Vellore-2015
Structural Organization in Animals
183903
Salivary glands are absent in:
1 Blatta orientalis
2 Anopheles
3 Musca domestica
4 Rana hexadactyla
Explanation:
D In Rana hexadactylasalivary glands are absentBlattaMusca and Anopheles are insects in which salivary glands are present. Salivary glands lubricate your mouthhelp you swallow and aid in digestion.
183899
Addition of a trace of thyroxine or iodine in water containing tadpoles will
1 keep them in larval stage
2 hasten their metamorphosis
3 slow down their metamorphosis
4 kill the tadpoles
Explanation:
B The addition of thyroxine to water will accelerate metamorphosis. Thyroxine regulates tissue differentiation and metamorphosis of tadpole larval in frogs. Gundernatch (1912) proved that the metamorphosis of tadpoles into adult frogs is controlled by thyroxine.
AIPMT-1990
Structural Organization in Animals
183900
Tadpole's tail is a/an:
1 excretory organ
2 attachment organ
3 respiratory organ
4 locomotory organ
Explanation:
D Tadpole's tail is a locomotory organ. Tadpoles have a notochord but except at the base of the tail where a few vertebral elements develop. The tadpole's tail completely lacks either osseous or cartilaginous elements.
AFMC-2003
Structural Organization in Animals
183901
Shifting of ammonotelism to ureotelism is seen in
1 fishes
2 frog
3 protopterus
4 snake
Explanation:
B Shifting of ammonotelism to ureotelism is seen in frog.In the tadpolesthe end product of nitrogen metabolism is ammonia which is easily disposed of by diffusion in water. After metamorphosishowever the frogs excrete most of their nitrogenous waste in the form of urea and only small amount as ammonia.
WB JEE-2007
Structural Organization in Animals
183902
The centum in typical centrum of frog is
1 Amphicoelous
2 Procoelous
3 Heterocoelus
4 None of the above
Explanation:
A Amphicoelous ventebrae has a centrum with a concavity on both the ends i.e the posterior and the anterior side.
CMC Vellore-2015
Structural Organization in Animals
183903
Salivary glands are absent in:
1 Blatta orientalis
2 Anopheles
3 Musca domestica
4 Rana hexadactyla
Explanation:
D In Rana hexadactylasalivary glands are absentBlattaMusca and Anopheles are insects in which salivary glands are present. Salivary glands lubricate your mouthhelp you swallow and aid in digestion.