185178
Which of the following animals developed the ability of using ribs and intercostals muscle in ventilation for the first time in vertebrate evolution?
1 Mammals
2 Aves
3 Reptiles
4 Fishes
Explanation:
Reptiles developed the ability of using ribs and intercostal muscles in ventilation for the first time in vertebrate evolution. Unlike fishes and amphibians, which use gills or skin for gas exchange, reptiles have lungs that require a more efficient mechanism of breathing. Birds and mammals inherited this ability from their reptilian ancestors.
AP EAMCET-11.07.2022 Shift-II
Evolution
185180
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is
1 Anapsid skull
2 Parapsid skull
3 Synapsid skull
4 Diapsid skull
Explanation:
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is synapsid skull. The skull of mammals represents a highly modified synapsid pattern. In synapsids, the temporal region of skull develops a single opening bound horizontal along its lower border by a bony connection between jugal and squamosal bones. Parapsid skull- This type of skull evolved in ichthyosaurus which included dolphin- like aquatic reptiles that preyed upon fishes or other aquatic animals. Anapsid skull- An anapsid is an amniote whose skull lacks one or more skull openings near the temples. Diapsid skull- Diapsids are a group of amniote tetrapods that developed two holes in each side of their skulls about 300 million year ago during the late carboniferous period.
AP EAMCET-2007
Evolution
185181
Genetic drift in mendelian population takes place in
1 Small population
2 Large population
3 Oceanic population
4 Never occurs
Explanation:
Genetic drift in Mendelian population takes place in small population. - Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. - Although genetic drift happens in population of all sizes, its effects tend to be stronger in small populations. - Genetic drift is change due to "sampling error" selecting the alleles for the next generation from the gene pool of the current generation.
AIPMT-1998
Evolution
185183
Arrange the periods of Palaeozoic era in ascending order in a geological time scale:
A A systematic arrangement of Palaeozoic era in ascending order in a geological time scale isCambrian \(\rightarrow\) Ordovician \(\rightarrow\) Silurian \(\rightarrow\) Devonian \(\rightarrow\) Carboniferous \(\rightarrow\) Permian. The geological time scale is a system of chronological dating that classifies geological strata in time. Palaeozic era is also called as "era of ancient life". Cambrian period is marked by establishment of invertebrate Ordovician period, by appearance of \(1^{\text {st }}\) vertebrates and fungi and extinction of marine species. Silurian period, by origin of jawed fishes, terrestrial vascular plants. Devonian period, by origin of amphibians. Carboniferous period, by origin of first reptiles and arthropods. Permian period by abundance of primitive reptiles \& appearance of conifers.
AP EAMCET-2005
Evolution
185185
is a group of plants representing one or more ecospecies of common evolutionary origin.
1 Ecospecies
2 Ecotype
3 Comparium
4 Cenospecies
Explanation:
Cenospecies is a group of plants representing one or more ecospecies of common evolutionary origin. - An ecotype is a population that is adapted to local environmental condition. 15(e) - In situ conservation and \(E x\) situ conservation
185178
Which of the following animals developed the ability of using ribs and intercostals muscle in ventilation for the first time in vertebrate evolution?
1 Mammals
2 Aves
3 Reptiles
4 Fishes
Explanation:
Reptiles developed the ability of using ribs and intercostal muscles in ventilation for the first time in vertebrate evolution. Unlike fishes and amphibians, which use gills or skin for gas exchange, reptiles have lungs that require a more efficient mechanism of breathing. Birds and mammals inherited this ability from their reptilian ancestors.
AP EAMCET-11.07.2022 Shift-II
Evolution
185180
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is
1 Anapsid skull
2 Parapsid skull
3 Synapsid skull
4 Diapsid skull
Explanation:
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is synapsid skull. The skull of mammals represents a highly modified synapsid pattern. In synapsids, the temporal region of skull develops a single opening bound horizontal along its lower border by a bony connection between jugal and squamosal bones. Parapsid skull- This type of skull evolved in ichthyosaurus which included dolphin- like aquatic reptiles that preyed upon fishes or other aquatic animals. Anapsid skull- An anapsid is an amniote whose skull lacks one or more skull openings near the temples. Diapsid skull- Diapsids are a group of amniote tetrapods that developed two holes in each side of their skulls about 300 million year ago during the late carboniferous period.
AP EAMCET-2007
Evolution
185181
Genetic drift in mendelian population takes place in
1 Small population
2 Large population
3 Oceanic population
4 Never occurs
Explanation:
Genetic drift in Mendelian population takes place in small population. - Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. - Although genetic drift happens in population of all sizes, its effects tend to be stronger in small populations. - Genetic drift is change due to "sampling error" selecting the alleles for the next generation from the gene pool of the current generation.
AIPMT-1998
Evolution
185183
Arrange the periods of Palaeozoic era in ascending order in a geological time scale:
A A systematic arrangement of Palaeozoic era in ascending order in a geological time scale isCambrian \(\rightarrow\) Ordovician \(\rightarrow\) Silurian \(\rightarrow\) Devonian \(\rightarrow\) Carboniferous \(\rightarrow\) Permian. The geological time scale is a system of chronological dating that classifies geological strata in time. Palaeozic era is also called as "era of ancient life". Cambrian period is marked by establishment of invertebrate Ordovician period, by appearance of \(1^{\text {st }}\) vertebrates and fungi and extinction of marine species. Silurian period, by origin of jawed fishes, terrestrial vascular plants. Devonian period, by origin of amphibians. Carboniferous period, by origin of first reptiles and arthropods. Permian period by abundance of primitive reptiles \& appearance of conifers.
AP EAMCET-2005
Evolution
185185
is a group of plants representing one or more ecospecies of common evolutionary origin.
1 Ecospecies
2 Ecotype
3 Comparium
4 Cenospecies
Explanation:
Cenospecies is a group of plants representing one or more ecospecies of common evolutionary origin. - An ecotype is a population that is adapted to local environmental condition. 15(e) - In situ conservation and \(E x\) situ conservation
185178
Which of the following animals developed the ability of using ribs and intercostals muscle in ventilation for the first time in vertebrate evolution?
1 Mammals
2 Aves
3 Reptiles
4 Fishes
Explanation:
Reptiles developed the ability of using ribs and intercostal muscles in ventilation for the first time in vertebrate evolution. Unlike fishes and amphibians, which use gills or skin for gas exchange, reptiles have lungs that require a more efficient mechanism of breathing. Birds and mammals inherited this ability from their reptilian ancestors.
AP EAMCET-11.07.2022 Shift-II
Evolution
185180
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is
1 Anapsid skull
2 Parapsid skull
3 Synapsid skull
4 Diapsid skull
Explanation:
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is synapsid skull. The skull of mammals represents a highly modified synapsid pattern. In synapsids, the temporal region of skull develops a single opening bound horizontal along its lower border by a bony connection between jugal and squamosal bones. Parapsid skull- This type of skull evolved in ichthyosaurus which included dolphin- like aquatic reptiles that preyed upon fishes or other aquatic animals. Anapsid skull- An anapsid is an amniote whose skull lacks one or more skull openings near the temples. Diapsid skull- Diapsids are a group of amniote tetrapods that developed two holes in each side of their skulls about 300 million year ago during the late carboniferous period.
AP EAMCET-2007
Evolution
185181
Genetic drift in mendelian population takes place in
1 Small population
2 Large population
3 Oceanic population
4 Never occurs
Explanation:
Genetic drift in Mendelian population takes place in small population. - Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. - Although genetic drift happens in population of all sizes, its effects tend to be stronger in small populations. - Genetic drift is change due to "sampling error" selecting the alleles for the next generation from the gene pool of the current generation.
AIPMT-1998
Evolution
185183
Arrange the periods of Palaeozoic era in ascending order in a geological time scale:
A A systematic arrangement of Palaeozoic era in ascending order in a geological time scale isCambrian \(\rightarrow\) Ordovician \(\rightarrow\) Silurian \(\rightarrow\) Devonian \(\rightarrow\) Carboniferous \(\rightarrow\) Permian. The geological time scale is a system of chronological dating that classifies geological strata in time. Palaeozic era is also called as "era of ancient life". Cambrian period is marked by establishment of invertebrate Ordovician period, by appearance of \(1^{\text {st }}\) vertebrates and fungi and extinction of marine species. Silurian period, by origin of jawed fishes, terrestrial vascular plants. Devonian period, by origin of amphibians. Carboniferous period, by origin of first reptiles and arthropods. Permian period by abundance of primitive reptiles \& appearance of conifers.
AP EAMCET-2005
Evolution
185185
is a group of plants representing one or more ecospecies of common evolutionary origin.
1 Ecospecies
2 Ecotype
3 Comparium
4 Cenospecies
Explanation:
Cenospecies is a group of plants representing one or more ecospecies of common evolutionary origin. - An ecotype is a population that is adapted to local environmental condition. 15(e) - In situ conservation and \(E x\) situ conservation
185178
Which of the following animals developed the ability of using ribs and intercostals muscle in ventilation for the first time in vertebrate evolution?
1 Mammals
2 Aves
3 Reptiles
4 Fishes
Explanation:
Reptiles developed the ability of using ribs and intercostal muscles in ventilation for the first time in vertebrate evolution. Unlike fishes and amphibians, which use gills or skin for gas exchange, reptiles have lungs that require a more efficient mechanism of breathing. Birds and mammals inherited this ability from their reptilian ancestors.
AP EAMCET-11.07.2022 Shift-II
Evolution
185180
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is
1 Anapsid skull
2 Parapsid skull
3 Synapsid skull
4 Diapsid skull
Explanation:
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is synapsid skull. The skull of mammals represents a highly modified synapsid pattern. In synapsids, the temporal region of skull develops a single opening bound horizontal along its lower border by a bony connection between jugal and squamosal bones. Parapsid skull- This type of skull evolved in ichthyosaurus which included dolphin- like aquatic reptiles that preyed upon fishes or other aquatic animals. Anapsid skull- An anapsid is an amniote whose skull lacks one or more skull openings near the temples. Diapsid skull- Diapsids are a group of amniote tetrapods that developed two holes in each side of their skulls about 300 million year ago during the late carboniferous period.
AP EAMCET-2007
Evolution
185181
Genetic drift in mendelian population takes place in
1 Small population
2 Large population
3 Oceanic population
4 Never occurs
Explanation:
Genetic drift in Mendelian population takes place in small population. - Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. - Although genetic drift happens in population of all sizes, its effects tend to be stronger in small populations. - Genetic drift is change due to "sampling error" selecting the alleles for the next generation from the gene pool of the current generation.
AIPMT-1998
Evolution
185183
Arrange the periods of Palaeozoic era in ascending order in a geological time scale:
A A systematic arrangement of Palaeozoic era in ascending order in a geological time scale isCambrian \(\rightarrow\) Ordovician \(\rightarrow\) Silurian \(\rightarrow\) Devonian \(\rightarrow\) Carboniferous \(\rightarrow\) Permian. The geological time scale is a system of chronological dating that classifies geological strata in time. Palaeozic era is also called as "era of ancient life". Cambrian period is marked by establishment of invertebrate Ordovician period, by appearance of \(1^{\text {st }}\) vertebrates and fungi and extinction of marine species. Silurian period, by origin of jawed fishes, terrestrial vascular plants. Devonian period, by origin of amphibians. Carboniferous period, by origin of first reptiles and arthropods. Permian period by abundance of primitive reptiles \& appearance of conifers.
AP EAMCET-2005
Evolution
185185
is a group of plants representing one or more ecospecies of common evolutionary origin.
1 Ecospecies
2 Ecotype
3 Comparium
4 Cenospecies
Explanation:
Cenospecies is a group of plants representing one or more ecospecies of common evolutionary origin. - An ecotype is a population that is adapted to local environmental condition. 15(e) - In situ conservation and \(E x\) situ conservation
185178
Which of the following animals developed the ability of using ribs and intercostals muscle in ventilation for the first time in vertebrate evolution?
1 Mammals
2 Aves
3 Reptiles
4 Fishes
Explanation:
Reptiles developed the ability of using ribs and intercostal muscles in ventilation for the first time in vertebrate evolution. Unlike fishes and amphibians, which use gills or skin for gas exchange, reptiles have lungs that require a more efficient mechanism of breathing. Birds and mammals inherited this ability from their reptilian ancestors.
AP EAMCET-11.07.2022 Shift-II
Evolution
185180
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is
1 Anapsid skull
2 Parapsid skull
3 Synapsid skull
4 Diapsid skull
Explanation:
Mammals evolved from Therapsids reptiles in Triassic period. The type of skull in these reptiles is synapsid skull. The skull of mammals represents a highly modified synapsid pattern. In synapsids, the temporal region of skull develops a single opening bound horizontal along its lower border by a bony connection between jugal and squamosal bones. Parapsid skull- This type of skull evolved in ichthyosaurus which included dolphin- like aquatic reptiles that preyed upon fishes or other aquatic animals. Anapsid skull- An anapsid is an amniote whose skull lacks one or more skull openings near the temples. Diapsid skull- Diapsids are a group of amniote tetrapods that developed two holes in each side of their skulls about 300 million year ago during the late carboniferous period.
AP EAMCET-2007
Evolution
185181
Genetic drift in mendelian population takes place in
1 Small population
2 Large population
3 Oceanic population
4 Never occurs
Explanation:
Genetic drift in Mendelian population takes place in small population. - Genetic drift may cause gene variants to disappear completely and thereby reduce genetic variation. - Although genetic drift happens in population of all sizes, its effects tend to be stronger in small populations. - Genetic drift is change due to "sampling error" selecting the alleles for the next generation from the gene pool of the current generation.
AIPMT-1998
Evolution
185183
Arrange the periods of Palaeozoic era in ascending order in a geological time scale:
A A systematic arrangement of Palaeozoic era in ascending order in a geological time scale isCambrian \(\rightarrow\) Ordovician \(\rightarrow\) Silurian \(\rightarrow\) Devonian \(\rightarrow\) Carboniferous \(\rightarrow\) Permian. The geological time scale is a system of chronological dating that classifies geological strata in time. Palaeozic era is also called as "era of ancient life". Cambrian period is marked by establishment of invertebrate Ordovician period, by appearance of \(1^{\text {st }}\) vertebrates and fungi and extinction of marine species. Silurian period, by origin of jawed fishes, terrestrial vascular plants. Devonian period, by origin of amphibians. Carboniferous period, by origin of first reptiles and arthropods. Permian period by abundance of primitive reptiles \& appearance of conifers.
AP EAMCET-2005
Evolution
185185
is a group of plants representing one or more ecospecies of common evolutionary origin.
1 Ecospecies
2 Ecotype
3 Comparium
4 Cenospecies
Explanation:
Cenospecies is a group of plants representing one or more ecospecies of common evolutionary origin. - An ecotype is a population that is adapted to local environmental condition. 15(e) - In situ conservation and \(E x\) situ conservation