Evidences of evolution
- Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution. Answer: 1. Analogy, convergent Key idea: Different origin but similar function means analogy, which results from convergent evolution. Sweet... 1
- Match List I with List II :List I:A. Mesozoic EraB. Proterozoic EraC. Cenozoic EraD. Paleozoic EraList II:I. Lower invertebratesII. Fish & AmphibiaIII. Birds & ReptilesIV. MammalsChoose the correct answer from the options given below : Answer: 1. A-III, B-I, C-IV, D-II Mesozoic - age of reptiles; birds appear (A-III). Proterozoic - lower invertebrates (B-I). Cenozoic - age... 1
- The flippers of the Penguins and Dolphins are the example of the Answer: 4. Convergent evolution Key idea: unrelated groups that evolve similar structures for similar functions show convergent evolution. P... 1
- Which of the following statements is not true ? Answer: 1. Flippers of penguins and dolphins are a pair of homologous organs Key idea: Homologous organs share origin; analogous organs shar... 1
- Embryological support for evolution was disapproved by : Answer: 1. Karl Ernst von Baer Key idea: Karl Ernst von Baer showed that embryos do not pass through the adult stages of other animals. Haec... 1
- Among the following sets of examples for divergent evolution, select the incorrect option : Answer: 4. Eye of octopus, bat and man Key idea: Divergent evolution means homologous organs (same origin) adapted to different functions. O... 1
- The similarity of bone structure in the forelimbs of many vertebrates is an example of Answer: 1. Homology Key idea: Similar bone structure in the forelimbs of different vertebrates shows a common ancestral origin, which is hom... 1
- Which of the following structures is homologus to the wing of a bird ? Answer: 4. Flipper of Whale Homologous organs share the same basic anatomical plan (here the forelimb bones) but may differ in function. A b... 1
- Analogous structures are a result of : Answer: 2. Convergent evolution Analogous structures have different origins but similar function because unrelated organisms face similar en... 1