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Q. No.Which one of the following statements is correct?
| 1. | stem cells are specialised cells |
| 2. | There is no evidence of the existence of gills during embryogenesis of mammals |
| 3. | All plant and animal cells are totipotent |
| 4. | Ontogeny repeats phylogeny |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Reptilian ancestors of the mammals were the :-
1. Therapsids
2. Thecodonts
3. Pterosaurs
4. Plesiosaurs
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Bryophytes evolved from
| 1. | Psilophyton |
| 2. | Rhynia type plants |
| 3. | Tracheophyte ancestors |
| 4. | Chlorophyte ancestors |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Zosterophyllum evolved from
(1) Psilophyton
(2) Rhynia type plants
(3) Tracheophyte ancestors
(4) Chlorophyte ancestors
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Which of the following is not on the same lineage?
| 1. | Herbaceous lycopods |
| 2. | Arborescent lycopods |
| 3. | Zosterophyllum |
| 4. | Sphenopsids |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Which of the following did not evolve from Psilophyton?
(1) Ferns
(2) Ginkgos
(3) Conifers
(4) Bryophytes
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Match each item in Column I with one item in Column II and chose your answer from the codes given below:
| Column I (geological period) |
Column II (major event) |
||
| I. | Ordovician | 1 | First vertebrates |
| II. | Carboniferous | 2 | Origin of reptiles |
| III. | Jurassic | 3 | Angiosperms appear |
| IV. | Cretaceous | 4 | Dinosaurs dominant |
Codes:
| I | II | III | IV | |
| 1. | 1 | 2 | 3 | 4 |
| 2. | 2 | 1 | 4 | 3 |
| 3. | 2 | 1 | 3 | 4 |
| 4. | 1 | 2 | 4 | 3 |
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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Match Column-I with Column-II and select the correct option:
| Column-I | Column-II | ||
| (a) | Louis Pasteur | (i) | Chemical evolution theory |
| (b) | Early Greek thinkers | (ii) | Inheritance of acquired characters |
| (c) | Oparin and Haldane | (iii) | Disapproved spontaneous generation theory |
| (d) | Lamarck | (iv) | Cosmozoic theory |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (ii) | (i) | (iii) | (iv) |
| 4. | (i) | (ii) | (iii) | (iv) |
Subtopic: Examples of Chemical Evolution | Urey & Miller Experiment | Other Theories of Origin of Life | Theory of Evolution & Lamarckism | A BRIEF ACCOUNT OF EVOLUTION |
92%
Level 1: 80%+
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Select the incorrect match.
1. First cellular forms of life – Appeared 2 bya
2. First organisms that invaded land – Plants
3. Sea weeds and few plants – Existed probably around 320 mya
4. Icthyosaurs – Fish-like amphibians
1. First cellular forms of life – Appeared 2 bya
2. First organisms that invaded land – Plants
3. Sea weeds and few plants – Existed probably around 320 mya
4. Icthyosaurs – Fish-like amphibians
Subtopic: Definition & Types of Evolution | A BRIEF ACCOUNT OF EVOLUTION |
52%
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