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Evolution of Life Forms - A Theory

Evolution
Biology
Class 12

Overview

Discuss- theory of special creation, darwin's beagle voyage, reproductive fitness, natural selection as a mechanism of evolution,contributions of alfred russel wallace- geological history coincides with biological history. Explain-Origin of first life on earth, oparin and haldane theory, miller and urey experiment.Describe various evidences of evolution - Rocks forming sediments, fossils in sediments - paleontological evidence, comparative anatomy and morphology - homologous and analogous structures, divergent and convergent evolution, biochemical similarities,Explain - artificial breeding by man,discuss - industrial melanisation,explain evolution by anthropogenic action due to chance mutation.

Related Questions to study

The theory of special creation was not objected by which of the following statements?

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What are homologous structures ? Give an example. Is it necessary that homologous structures always have common ancestor ?

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Match List I (Life form) with List II (Means of Surviving the Siess) andselect the correct answer using the code given below the lists:
List IList II
A.Chamaephytes1.Buds are underground on rhizomes, bulbs, corms
B.Geophytes2.Buds are located at the surface of soil, protected
by leaf and stem bases
C.Hemicryptophytes3.Annual life span; survive the stress as seeds
D.Therophytes4.Buds are locate a above ground, but low enough not to be exposed to strong winds

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Match the terms to these definitions:
Heterotrophy,  autotroph, evolution,  prokaryote,  microsphere, ozone shield,  chemoheterotroph,  protocell
 .......... Cell forerunner developed from cell-like microspheres.

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Evolution is not occurring at present.

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Define variation.

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"In different races, there may be difference in culture and ways of
 living but capacity in all is the same". It was the opinion of ___________.

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Assertion : Dryopithecus africans is a common ancestor of man and great apes.

Reason :It gave rise to Ramapithecus.

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Short/Long answer type questions 
State the significance of biochemical similarities amongst diverse organism in evolution.

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The theory of special creation was strongly challenged during the nineteenth century on the basis of observation made:

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