From which ancestral groups did birds and mammals evolve?
- AEocene and Oligocene periods
- BSilurian and Devonian periods
- CCarboniferous and Permian periods
- DJurassic and Triassic periods
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Select the correct match from the following:
An evolutionary trend in which there is general degeneration and loss of organs is known as:
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View Solution$A$ species that is produced by the loss or disappearance of a few characters found in its parents is termed as:
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View SolutionFirst dinosaurs and first egg-laying mammals originated in which period?
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View SolutionMatch List-$I$ and List-$II$ and choose the correct option.
List-$I$ List-$II$ $(i)$ $65$ million years ago $(p)$ Sea weeds existed $(ii)$ $350$ million years ago $(q)$ Invertebrates formed $(iii)$ $500$ million years ago $(r)$ Jawless fish evolved $(iv)$ $320$ million years ago $(s)$ Dinosaurs disappeared
| List-$I$ | List-$II$ |
| $(i)$ $65$ million years ago | $(p)$ Sea weeds existed |
| $(ii)$ $350$ million years ago | $(q)$ Invertebrates formed |
| $(iii)$ $500$ million years ago | $(r)$ Jawless fish evolved |
| $(iv)$ $320$ million years ago | $(s)$ Dinosaurs disappeared |
MediumGUJCET 2026
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