Q. No.In organic evolution what is it that actually evolves?
1.
individual
2.
family
3.
population
4.
species
The extinct reptilian lineage that evolved into dinosaurs and later on the birds is:
| 1. | Pelycosaurs | 2. | Synapsids |
| 3. | Tuataras | 4. | Thecodonts |
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Fishes with stout and strong fins that could move on land and go back to water existed about:
| 1. | 500 mya | 2. | 350 mya |
| 3. | 320 mya | 4. | 300 mya |
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Identify the incorrectly matched pair:
1. Cretaceous period : dinosaurs became extinct
2. Carboniferous period : origin of reptiles
3. Silurian period : origin of vascular plants
4. Cambrian period : first vertebrates (jawless fishes)
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de Vries based his “Mutation Theory” on his observation on :
1. Pisumsativum
2. Drosophila melanogaster
3. Oenotheralamackiana
4. Coenorhabditiselegans
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Which of the following is a useful tool to measure microevolution?
1. Genetic drift
2. Hardy-Weinberg equation
3. Mendelian ratios
4. Age/sex ratio
The connecting link between the fishes and amphibians are the:
1. Seymouria
2. Peripatus
3. Cartilaginous fishes
4. Coelocanths [lobe finned fishes]
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The essay “On the tendencies of Varieties to Depart Indefinitely from the Original Type” was authored by :
1. A.R.Wallace
2. Charles Darwin
3. Charles Lyell
4. Joseph Dalton Hooker
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The “Replica Plating Experiment” proved that :
1. most mutations are harmful or neutral
2. mutations are recurring in nature
3. all mutations are pre-adaptive in nature
4. mutations occur in a non-directional manner
The type of natural selection that operates to eliminate intermediate phenotypes in a population is known as:
| 1. | Directional selection | 2. | Disruptive selection |
| 3. | Stabilizing selection | 4. | Reverse selection |
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