184890
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
1 They were partially isolated from the surruounding
2 They could maintain an internal environment
3 They were able to reproduce
4 They could separate combinations of molecules from the surroundings
Explanation:
Protobionts are an aggregation of organic molecules, surrounded by a membrane, that abiotically grow up into resemblances of living matter; thought to be the precursors of prokaryotic cells. Coacervates are a self-organized spherical lipid collection that is considered to be a step towards the origin of life.
AIPMT-2008
Evolution
184828
Origin of first mammals occurred:
1 500 million years
2 220 million years
3 1600 million years
4 over 1600 million years ago
Explanation:
Origin of first mammals occurred 220 million years. Mammals were derived in the Triassic period from members of the reptilian order Therapsida. The therapsids, members of the subclass synapsida (some times called mammal like reptiles) generally were unimpressive in relation to other reptiles of their time.
Haryana PMT-2002
Evolution
184842
The origin of species from pre-existing species is:
1 isolation
2 speciation
3 polyploidy
4 mutation
Explanation:
The origin of species from pre-existing species is speciation. Speciation is the process by which one or more new species evolve from a single ancestral species.
J and K CET-2002
Evolution
184843
Fossil evidences of evolution are called:
1 embryology
2 anatomy
3 palaeontology
4 biogeography
Explanation:
Fossil evidences of evolution are called Palaeontology. Palaeontology is the study of prehistoric species, mostly ones that are extinct. Fossils are the remains of plants, animals, fungi, bacteria and single-celled living things.
184890
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
1 They were partially isolated from the surruounding
2 They could maintain an internal environment
3 They were able to reproduce
4 They could separate combinations of molecules from the surroundings
Explanation:
Protobionts are an aggregation of organic molecules, surrounded by a membrane, that abiotically grow up into resemblances of living matter; thought to be the precursors of prokaryotic cells. Coacervates are a self-organized spherical lipid collection that is considered to be a step towards the origin of life.
AIPMT-2008
Evolution
184828
Origin of first mammals occurred:
1 500 million years
2 220 million years
3 1600 million years
4 over 1600 million years ago
Explanation:
Origin of first mammals occurred 220 million years. Mammals were derived in the Triassic period from members of the reptilian order Therapsida. The therapsids, members of the subclass synapsida (some times called mammal like reptiles) generally were unimpressive in relation to other reptiles of their time.
Haryana PMT-2002
Evolution
184842
The origin of species from pre-existing species is:
1 isolation
2 speciation
3 polyploidy
4 mutation
Explanation:
The origin of species from pre-existing species is speciation. Speciation is the process by which one or more new species evolve from a single ancestral species.
J and K CET-2002
Evolution
184843
Fossil evidences of evolution are called:
1 embryology
2 anatomy
3 palaeontology
4 biogeography
Explanation:
Fossil evidences of evolution are called Palaeontology. Palaeontology is the study of prehistoric species, mostly ones that are extinct. Fossils are the remains of plants, animals, fungi, bacteria and single-celled living things.
184890
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
1 They were partially isolated from the surruounding
2 They could maintain an internal environment
3 They were able to reproduce
4 They could separate combinations of molecules from the surroundings
Explanation:
Protobionts are an aggregation of organic molecules, surrounded by a membrane, that abiotically grow up into resemblances of living matter; thought to be the precursors of prokaryotic cells. Coacervates are a self-organized spherical lipid collection that is considered to be a step towards the origin of life.
AIPMT-2008
Evolution
184828
Origin of first mammals occurred:
1 500 million years
2 220 million years
3 1600 million years
4 over 1600 million years ago
Explanation:
Origin of first mammals occurred 220 million years. Mammals were derived in the Triassic period from members of the reptilian order Therapsida. The therapsids, members of the subclass synapsida (some times called mammal like reptiles) generally were unimpressive in relation to other reptiles of their time.
Haryana PMT-2002
Evolution
184842
The origin of species from pre-existing species is:
1 isolation
2 speciation
3 polyploidy
4 mutation
Explanation:
The origin of species from pre-existing species is speciation. Speciation is the process by which one or more new species evolve from a single ancestral species.
J and K CET-2002
Evolution
184843
Fossil evidences of evolution are called:
1 embryology
2 anatomy
3 palaeontology
4 biogeography
Explanation:
Fossil evidences of evolution are called Palaeontology. Palaeontology is the study of prehistoric species, mostly ones that are extinct. Fossils are the remains of plants, animals, fungi, bacteria and single-celled living things.
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Evolution
184890
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
1 They were partially isolated from the surruounding
2 They could maintain an internal environment
3 They were able to reproduce
4 They could separate combinations of molecules from the surroundings
Explanation:
Protobionts are an aggregation of organic molecules, surrounded by a membrane, that abiotically grow up into resemblances of living matter; thought to be the precursors of prokaryotic cells. Coacervates are a self-organized spherical lipid collection that is considered to be a step towards the origin of life.
AIPMT-2008
Evolution
184828
Origin of first mammals occurred:
1 500 million years
2 220 million years
3 1600 million years
4 over 1600 million years ago
Explanation:
Origin of first mammals occurred 220 million years. Mammals were derived in the Triassic period from members of the reptilian order Therapsida. The therapsids, members of the subclass synapsida (some times called mammal like reptiles) generally were unimpressive in relation to other reptiles of their time.
Haryana PMT-2002
Evolution
184842
The origin of species from pre-existing species is:
1 isolation
2 speciation
3 polyploidy
4 mutation
Explanation:
The origin of species from pre-existing species is speciation. Speciation is the process by which one or more new species evolve from a single ancestral species.
J and K CET-2002
Evolution
184843
Fossil evidences of evolution are called:
1 embryology
2 anatomy
3 palaeontology
4 biogeography
Explanation:
Fossil evidences of evolution are called Palaeontology. Palaeontology is the study of prehistoric species, mostly ones that are extinct. Fossils are the remains of plants, animals, fungi, bacteria and single-celled living things.
