184920
Darwins finches provide excellent evidence in favour of organic evolution. These are related to which of the following evidences?
1 Embryology
2 Palaeontology (or fossils)
3 Anatomy
4 Biogeography (or geographic distribution)
Explanation:
The branch of geography which deals with the study of distribution of plants and animals is called Biogeography. Charles Darwin during his voyage in Galapagos islands, found that animals of these islands resemble those of South American islands. The birds of Galapagos Island (also known as Darwin's finches) do not resemble birds of South America (same species). Therefore, he stated that finches were derived from ancestral stock that had emigrated from the mainland to the island and underwent profound changes under different environmental conditions. Darwin's finches living on Galapagos island differ not only among themselves but also from mainland finches in size, colour, beak, and food habit
Haryana PMT-2010 / AFMC-2007
Evolution
184921
Half life period of \(\mathrm{C}^{14}\) is
1 500 years
2 5,000 years
3 50 years
4 \(5 \times 10^{14}\) years
Explanation:
Carbon - \(14\left(\mathrm{C}^{14}\right)\) has a half life period of \(5730 \pm 40\) years i.e. half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during succeeding 5730 years. Because carbon 14 decays at this constant rate, an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon. Carbon-14 dating also called radiocarbon dating, method of age determination that depends upon the decay to nitrogen of radiocarbon \((\mathrm{C}-14)\). This method of \(\mathrm{C}-14\) dating was developed by the American physicist Willard F. Libby. It has proved to be versatile technique of dating fossils and archaeological specimens from \(500-50000\) years old.
BHU PMT (Screening)-2010 / BVP-2008
Evolution
184952
Which one of the following describes correctly the homologous structures?
1 Organs with anatomical similarities, but performing different functions
2 Organs with anatomical dissimilarities, but performing same function
3 Organs that have no function now, but had important function in ancestors
4 Organs appearing only in embryonic stage and disappearing later in the adult
Explanation:
Homologous structure are organs or body parts in different species that have similar anatomical structures but may perform different functions. This similarity is often due to common ancestry and evolutionary relationships. The organs which have similar functions but are different in their structural details and origin are called analogous organs. The analogous structures are the result of convergent evolution.
AFMC-2010
Evolution
184923
Industrial melanism as observed in peppered moth proves that
1 The true black melanic form arise by a recurring random mutation
2 The melanic form of the moth has no selective advantage over lighter form in industrial area
3 The lighter-form moth has no selective advantage either in polluted industrial area or non-polluted area
4 melanism is a pollution-generated feature
Explanation:
Industrial melanism is an adaptation where the moths living in the areas developed melanin pigments to match their body to the tree trunks. The occurrence of industrial melanism in moths has been originally studied by R.A. Fischer and E.B. Ford. The true black melanic forms of peppered moth are by a recurring random mutation due to industrial melanism. The phenomenon has been documented in numerous species (most common and intensely studied = pepperd moth Biston bitularia) that hide from predators by blending in with their backgrounds. Therefore, moth that were hidden in background survived. Industrial melanism supports evolution by natural selection.
Rajasthan PMT-2010
Evolution
184924
Example of Analogous organs is :
1 wings of bird and insect
2 forelimbs of horse and man
3 teeth of elephant and man
4 none of the above
Explanation:
The organs which have similar functions but are different in their structure details and origin are called analogous organs. The analogous structures are the result of convergent evolution. Example - The wings of an insect are analogous to wings of a bird. It is due to the fact that the basic structure of the wings of insects is different from the wings of birds. However, their function is similar. Similarly, fins of fishes and flippers of whale, sting of Honeybee and scorpion etc.
184920
Darwins finches provide excellent evidence in favour of organic evolution. These are related to which of the following evidences?
1 Embryology
2 Palaeontology (or fossils)
3 Anatomy
4 Biogeography (or geographic distribution)
Explanation:
The branch of geography which deals with the study of distribution of plants and animals is called Biogeography. Charles Darwin during his voyage in Galapagos islands, found that animals of these islands resemble those of South American islands. The birds of Galapagos Island (also known as Darwin's finches) do not resemble birds of South America (same species). Therefore, he stated that finches were derived from ancestral stock that had emigrated from the mainland to the island and underwent profound changes under different environmental conditions. Darwin's finches living on Galapagos island differ not only among themselves but also from mainland finches in size, colour, beak, and food habit
Haryana PMT-2010 / AFMC-2007
Evolution
184921
Half life period of \(\mathrm{C}^{14}\) is
1 500 years
2 5,000 years
3 50 years
4 \(5 \times 10^{14}\) years
Explanation:
Carbon - \(14\left(\mathrm{C}^{14}\right)\) has a half life period of \(5730 \pm 40\) years i.e. half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during succeeding 5730 years. Because carbon 14 decays at this constant rate, an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon. Carbon-14 dating also called radiocarbon dating, method of age determination that depends upon the decay to nitrogen of radiocarbon \((\mathrm{C}-14)\). This method of \(\mathrm{C}-14\) dating was developed by the American physicist Willard F. Libby. It has proved to be versatile technique of dating fossils and archaeological specimens from \(500-50000\) years old.
BHU PMT (Screening)-2010 / BVP-2008
Evolution
184952
Which one of the following describes correctly the homologous structures?
1 Organs with anatomical similarities, but performing different functions
2 Organs with anatomical dissimilarities, but performing same function
3 Organs that have no function now, but had important function in ancestors
4 Organs appearing only in embryonic stage and disappearing later in the adult
Explanation:
Homologous structure are organs or body parts in different species that have similar anatomical structures but may perform different functions. This similarity is often due to common ancestry and evolutionary relationships. The organs which have similar functions but are different in their structural details and origin are called analogous organs. The analogous structures are the result of convergent evolution.
AFMC-2010
Evolution
184923
Industrial melanism as observed in peppered moth proves that
1 The true black melanic form arise by a recurring random mutation
2 The melanic form of the moth has no selective advantage over lighter form in industrial area
3 The lighter-form moth has no selective advantage either in polluted industrial area or non-polluted area
4 melanism is a pollution-generated feature
Explanation:
Industrial melanism is an adaptation where the moths living in the areas developed melanin pigments to match their body to the tree trunks. The occurrence of industrial melanism in moths has been originally studied by R.A. Fischer and E.B. Ford. The true black melanic forms of peppered moth are by a recurring random mutation due to industrial melanism. The phenomenon has been documented in numerous species (most common and intensely studied = pepperd moth Biston bitularia) that hide from predators by blending in with their backgrounds. Therefore, moth that were hidden in background survived. Industrial melanism supports evolution by natural selection.
Rajasthan PMT-2010
Evolution
184924
Example of Analogous organs is :
1 wings of bird and insect
2 forelimbs of horse and man
3 teeth of elephant and man
4 none of the above
Explanation:
The organs which have similar functions but are different in their structure details and origin are called analogous organs. The analogous structures are the result of convergent evolution. Example - The wings of an insect are analogous to wings of a bird. It is due to the fact that the basic structure of the wings of insects is different from the wings of birds. However, their function is similar. Similarly, fins of fishes and flippers of whale, sting of Honeybee and scorpion etc.
184920
Darwins finches provide excellent evidence in favour of organic evolution. These are related to which of the following evidences?
1 Embryology
2 Palaeontology (or fossils)
3 Anatomy
4 Biogeography (or geographic distribution)
Explanation:
The branch of geography which deals with the study of distribution of plants and animals is called Biogeography. Charles Darwin during his voyage in Galapagos islands, found that animals of these islands resemble those of South American islands. The birds of Galapagos Island (also known as Darwin's finches) do not resemble birds of South America (same species). Therefore, he stated that finches were derived from ancestral stock that had emigrated from the mainland to the island and underwent profound changes under different environmental conditions. Darwin's finches living on Galapagos island differ not only among themselves but also from mainland finches in size, colour, beak, and food habit
Haryana PMT-2010 / AFMC-2007
Evolution
184921
Half life period of \(\mathrm{C}^{14}\) is
1 500 years
2 5,000 years
3 50 years
4 \(5 \times 10^{14}\) years
Explanation:
Carbon - \(14\left(\mathrm{C}^{14}\right)\) has a half life period of \(5730 \pm 40\) years i.e. half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during succeeding 5730 years. Because carbon 14 decays at this constant rate, an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon. Carbon-14 dating also called radiocarbon dating, method of age determination that depends upon the decay to nitrogen of radiocarbon \((\mathrm{C}-14)\). This method of \(\mathrm{C}-14\) dating was developed by the American physicist Willard F. Libby. It has proved to be versatile technique of dating fossils and archaeological specimens from \(500-50000\) years old.
BHU PMT (Screening)-2010 / BVP-2008
Evolution
184952
Which one of the following describes correctly the homologous structures?
1 Organs with anatomical similarities, but performing different functions
2 Organs with anatomical dissimilarities, but performing same function
3 Organs that have no function now, but had important function in ancestors
4 Organs appearing only in embryonic stage and disappearing later in the adult
Explanation:
Homologous structure are organs or body parts in different species that have similar anatomical structures but may perform different functions. This similarity is often due to common ancestry and evolutionary relationships. The organs which have similar functions but are different in their structural details and origin are called analogous organs. The analogous structures are the result of convergent evolution.
AFMC-2010
Evolution
184923
Industrial melanism as observed in peppered moth proves that
1 The true black melanic form arise by a recurring random mutation
2 The melanic form of the moth has no selective advantage over lighter form in industrial area
3 The lighter-form moth has no selective advantage either in polluted industrial area or non-polluted area
4 melanism is a pollution-generated feature
Explanation:
Industrial melanism is an adaptation where the moths living in the areas developed melanin pigments to match their body to the tree trunks. The occurrence of industrial melanism in moths has been originally studied by R.A. Fischer and E.B. Ford. The true black melanic forms of peppered moth are by a recurring random mutation due to industrial melanism. The phenomenon has been documented in numerous species (most common and intensely studied = pepperd moth Biston bitularia) that hide from predators by blending in with their backgrounds. Therefore, moth that were hidden in background survived. Industrial melanism supports evolution by natural selection.
Rajasthan PMT-2010
Evolution
184924
Example of Analogous organs is :
1 wings of bird and insect
2 forelimbs of horse and man
3 teeth of elephant and man
4 none of the above
Explanation:
The organs which have similar functions but are different in their structure details and origin are called analogous organs. The analogous structures are the result of convergent evolution. Example - The wings of an insect are analogous to wings of a bird. It is due to the fact that the basic structure of the wings of insects is different from the wings of birds. However, their function is similar. Similarly, fins of fishes and flippers of whale, sting of Honeybee and scorpion etc.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Evolution
184920
Darwins finches provide excellent evidence in favour of organic evolution. These are related to which of the following evidences?
1 Embryology
2 Palaeontology (or fossils)
3 Anatomy
4 Biogeography (or geographic distribution)
Explanation:
The branch of geography which deals with the study of distribution of plants and animals is called Biogeography. Charles Darwin during his voyage in Galapagos islands, found that animals of these islands resemble those of South American islands. The birds of Galapagos Island (also known as Darwin's finches) do not resemble birds of South America (same species). Therefore, he stated that finches were derived from ancestral stock that had emigrated from the mainland to the island and underwent profound changes under different environmental conditions. Darwin's finches living on Galapagos island differ not only among themselves but also from mainland finches in size, colour, beak, and food habit
Haryana PMT-2010 / AFMC-2007
Evolution
184921
Half life period of \(\mathrm{C}^{14}\) is
1 500 years
2 5,000 years
3 50 years
4 \(5 \times 10^{14}\) years
Explanation:
Carbon - \(14\left(\mathrm{C}^{14}\right)\) has a half life period of \(5730 \pm 40\) years i.e. half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during succeeding 5730 years. Because carbon 14 decays at this constant rate, an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon. Carbon-14 dating also called radiocarbon dating, method of age determination that depends upon the decay to nitrogen of radiocarbon \((\mathrm{C}-14)\). This method of \(\mathrm{C}-14\) dating was developed by the American physicist Willard F. Libby. It has proved to be versatile technique of dating fossils and archaeological specimens from \(500-50000\) years old.
BHU PMT (Screening)-2010 / BVP-2008
Evolution
184952
Which one of the following describes correctly the homologous structures?
1 Organs with anatomical similarities, but performing different functions
2 Organs with anatomical dissimilarities, but performing same function
3 Organs that have no function now, but had important function in ancestors
4 Organs appearing only in embryonic stage and disappearing later in the adult
Explanation:
Homologous structure are organs or body parts in different species that have similar anatomical structures but may perform different functions. This similarity is often due to common ancestry and evolutionary relationships. The organs which have similar functions but are different in their structural details and origin are called analogous organs. The analogous structures are the result of convergent evolution.
AFMC-2010
Evolution
184923
Industrial melanism as observed in peppered moth proves that
1 The true black melanic form arise by a recurring random mutation
2 The melanic form of the moth has no selective advantage over lighter form in industrial area
3 The lighter-form moth has no selective advantage either in polluted industrial area or non-polluted area
4 melanism is a pollution-generated feature
Explanation:
Industrial melanism is an adaptation where the moths living in the areas developed melanin pigments to match their body to the tree trunks. The occurrence of industrial melanism in moths has been originally studied by R.A. Fischer and E.B. Ford. The true black melanic forms of peppered moth are by a recurring random mutation due to industrial melanism. The phenomenon has been documented in numerous species (most common and intensely studied = pepperd moth Biston bitularia) that hide from predators by blending in with their backgrounds. Therefore, moth that were hidden in background survived. Industrial melanism supports evolution by natural selection.
Rajasthan PMT-2010
Evolution
184924
Example of Analogous organs is :
1 wings of bird and insect
2 forelimbs of horse and man
3 teeth of elephant and man
4 none of the above
Explanation:
The organs which have similar functions but are different in their structure details and origin are called analogous organs. The analogous structures are the result of convergent evolution. Example - The wings of an insect are analogous to wings of a bird. It is due to the fact that the basic structure of the wings of insects is different from the wings of birds. However, their function is similar. Similarly, fins of fishes and flippers of whale, sting of Honeybee and scorpion etc.
184920
Darwins finches provide excellent evidence in favour of organic evolution. These are related to which of the following evidences?
1 Embryology
2 Palaeontology (or fossils)
3 Anatomy
4 Biogeography (or geographic distribution)
Explanation:
The branch of geography which deals with the study of distribution of plants and animals is called Biogeography. Charles Darwin during his voyage in Galapagos islands, found that animals of these islands resemble those of South American islands. The birds of Galapagos Island (also known as Darwin's finches) do not resemble birds of South America (same species). Therefore, he stated that finches were derived from ancestral stock that had emigrated from the mainland to the island and underwent profound changes under different environmental conditions. Darwin's finches living on Galapagos island differ not only among themselves but also from mainland finches in size, colour, beak, and food habit
Haryana PMT-2010 / AFMC-2007
Evolution
184921
Half life period of \(\mathrm{C}^{14}\) is
1 500 years
2 5,000 years
3 50 years
4 \(5 \times 10^{14}\) years
Explanation:
Carbon - \(14\left(\mathrm{C}^{14}\right)\) has a half life period of \(5730 \pm 40\) years i.e. half the amount of the radioisotope present at any given time will undergo spontaneous disintegration during succeeding 5730 years. Because carbon 14 decays at this constant rate, an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon. Carbon-14 dating also called radiocarbon dating, method of age determination that depends upon the decay to nitrogen of radiocarbon \((\mathrm{C}-14)\). This method of \(\mathrm{C}-14\) dating was developed by the American physicist Willard F. Libby. It has proved to be versatile technique of dating fossils and archaeological specimens from \(500-50000\) years old.
BHU PMT (Screening)-2010 / BVP-2008
Evolution
184952
Which one of the following describes correctly the homologous structures?
1 Organs with anatomical similarities, but performing different functions
2 Organs with anatomical dissimilarities, but performing same function
3 Organs that have no function now, but had important function in ancestors
4 Organs appearing only in embryonic stage and disappearing later in the adult
Explanation:
Homologous structure are organs or body parts in different species that have similar anatomical structures but may perform different functions. This similarity is often due to common ancestry and evolutionary relationships. The organs which have similar functions but are different in their structural details and origin are called analogous organs. The analogous structures are the result of convergent evolution.
AFMC-2010
Evolution
184923
Industrial melanism as observed in peppered moth proves that
1 The true black melanic form arise by a recurring random mutation
2 The melanic form of the moth has no selective advantage over lighter form in industrial area
3 The lighter-form moth has no selective advantage either in polluted industrial area or non-polluted area
4 melanism is a pollution-generated feature
Explanation:
Industrial melanism is an adaptation where the moths living in the areas developed melanin pigments to match their body to the tree trunks. The occurrence of industrial melanism in moths has been originally studied by R.A. Fischer and E.B. Ford. The true black melanic forms of peppered moth are by a recurring random mutation due to industrial melanism. The phenomenon has been documented in numerous species (most common and intensely studied = pepperd moth Biston bitularia) that hide from predators by blending in with their backgrounds. Therefore, moth that were hidden in background survived. Industrial melanism supports evolution by natural selection.
Rajasthan PMT-2010
Evolution
184924
Example of Analogous organs is :
1 wings of bird and insect
2 forelimbs of horse and man
3 teeth of elephant and man
4 none of the above
Explanation:
The organs which have similar functions but are different in their structure details and origin are called analogous organs. The analogous structures are the result of convergent evolution. Example - The wings of an insect are analogous to wings of a bird. It is due to the fact that the basic structure of the wings of insects is different from the wings of birds. However, their function is similar. Similarly, fins of fishes and flippers of whale, sting of Honeybee and scorpion etc.