346253
Vivaparity is considered to be more evolved because
1 The young ones are left on their own
2 The young ones are protected
3 The young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival
4 The embryo takes a long time to develop
Explanation:
As the young progenies are protected inside the body of the mother as well as they are looked after they are born, leads to more chances of survival, viviparity is considered to be more evolved.
NCERT Exemplar
BIOXII07:EVOLUTION
346254
Some major events in the early history of life are mentioned here. i. First animal ii. First eukaryotes iii. First Genes iv. First heterotrophic prokaryotes v. First autotrophic prokaryotes. Identify the option which places them in correct order
1 ii, iii, iv, i, v
2 iii, iv, v, ii, i
3 iv, iii, i, ii, v
4 v, ii, iii, iv, i
Explanation:
Organisms have evolved from simpler forms to complex form. Hence the order of the events are genes first, then autotrophic prokaryotes, then heterotrophic prokaryotes, then eukaryotes and then animals
BIOXII07:EVOLUTION
346255
The most successful story is evolution of man with characters such as-
1 Avoiding danger
2 Language skill alone
3 Language skill and self-consciousnes
4 Being omnivores
Explanation:
The most successful story is the evolution of man with language skills and self-consciousness.
BIOXII07:EVOLUTION
346257
Which is incorrectly matched?
1 Jawless fish probably evolved around 350 mya.
2 320 mya - Jawless fishes evolved
3 2000 mya - First cellular form of life appeared
4 65 mya - Dinosaurs disappeared
Explanation:
About 2000 million years ago the first cellular form of life appeared on earth. Before 500 mya, only invertebrates were formed, later around 350 mya Jawless fish evolved being the first vertebrate.
346253
Vivaparity is considered to be more evolved because
1 The young ones are left on their own
2 The young ones are protected
3 The young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival
4 The embryo takes a long time to develop
Explanation:
As the young progenies are protected inside the body of the mother as well as they are looked after they are born, leads to more chances of survival, viviparity is considered to be more evolved.
NCERT Exemplar
BIOXII07:EVOLUTION
346254
Some major events in the early history of life are mentioned here. i. First animal ii. First eukaryotes iii. First Genes iv. First heterotrophic prokaryotes v. First autotrophic prokaryotes. Identify the option which places them in correct order
1 ii, iii, iv, i, v
2 iii, iv, v, ii, i
3 iv, iii, i, ii, v
4 v, ii, iii, iv, i
Explanation:
Organisms have evolved from simpler forms to complex form. Hence the order of the events are genes first, then autotrophic prokaryotes, then heterotrophic prokaryotes, then eukaryotes and then animals
BIOXII07:EVOLUTION
346255
The most successful story is evolution of man with characters such as-
1 Avoiding danger
2 Language skill alone
3 Language skill and self-consciousnes
4 Being omnivores
Explanation:
The most successful story is the evolution of man with language skills and self-consciousness.
BIOXII07:EVOLUTION
346257
Which is incorrectly matched?
1 Jawless fish probably evolved around 350 mya.
2 320 mya - Jawless fishes evolved
3 2000 mya - First cellular form of life appeared
4 65 mya - Dinosaurs disappeared
Explanation:
About 2000 million years ago the first cellular form of life appeared on earth. Before 500 mya, only invertebrates were formed, later around 350 mya Jawless fish evolved being the first vertebrate.
346253
Vivaparity is considered to be more evolved because
1 The young ones are left on their own
2 The young ones are protected
3 The young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival
4 The embryo takes a long time to develop
Explanation:
As the young progenies are protected inside the body of the mother as well as they are looked after they are born, leads to more chances of survival, viviparity is considered to be more evolved.
NCERT Exemplar
BIOXII07:EVOLUTION
346254
Some major events in the early history of life are mentioned here. i. First animal ii. First eukaryotes iii. First Genes iv. First heterotrophic prokaryotes v. First autotrophic prokaryotes. Identify the option which places them in correct order
1 ii, iii, iv, i, v
2 iii, iv, v, ii, i
3 iv, iii, i, ii, v
4 v, ii, iii, iv, i
Explanation:
Organisms have evolved from simpler forms to complex form. Hence the order of the events are genes first, then autotrophic prokaryotes, then heterotrophic prokaryotes, then eukaryotes and then animals
BIOXII07:EVOLUTION
346255
The most successful story is evolution of man with characters such as-
1 Avoiding danger
2 Language skill alone
3 Language skill and self-consciousnes
4 Being omnivores
Explanation:
The most successful story is the evolution of man with language skills and self-consciousness.
BIOXII07:EVOLUTION
346257
Which is incorrectly matched?
1 Jawless fish probably evolved around 350 mya.
2 320 mya - Jawless fishes evolved
3 2000 mya - First cellular form of life appeared
4 65 mya - Dinosaurs disappeared
Explanation:
About 2000 million years ago the first cellular form of life appeared on earth. Before 500 mya, only invertebrates were formed, later around 350 mya Jawless fish evolved being the first vertebrate.
346253
Vivaparity is considered to be more evolved because
1 The young ones are left on their own
2 The young ones are protected
3 The young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival
4 The embryo takes a long time to develop
Explanation:
As the young progenies are protected inside the body of the mother as well as they are looked after they are born, leads to more chances of survival, viviparity is considered to be more evolved.
NCERT Exemplar
BIOXII07:EVOLUTION
346254
Some major events in the early history of life are mentioned here. i. First animal ii. First eukaryotes iii. First Genes iv. First heterotrophic prokaryotes v. First autotrophic prokaryotes. Identify the option which places them in correct order
1 ii, iii, iv, i, v
2 iii, iv, v, ii, i
3 iv, iii, i, ii, v
4 v, ii, iii, iv, i
Explanation:
Organisms have evolved from simpler forms to complex form. Hence the order of the events are genes first, then autotrophic prokaryotes, then heterotrophic prokaryotes, then eukaryotes and then animals
BIOXII07:EVOLUTION
346255
The most successful story is evolution of man with characters such as-
1 Avoiding danger
2 Language skill alone
3 Language skill and self-consciousnes
4 Being omnivores
Explanation:
The most successful story is the evolution of man with language skills and self-consciousness.
BIOXII07:EVOLUTION
346257
Which is incorrectly matched?
1 Jawless fish probably evolved around 350 mya.
2 320 mya - Jawless fishes evolved
3 2000 mya - First cellular form of life appeared
4 65 mya - Dinosaurs disappeared
Explanation:
About 2000 million years ago the first cellular form of life appeared on earth. Before 500 mya, only invertebrates were formed, later around 350 mya Jawless fish evolved being the first vertebrate.
