Evidences of Evolution

List the resemblances in the biochemical components of bacteria and human.

 It states that mitochondria originate from ancient α-proteobacteria.

In all organisms, the basic molecules of the cell are different, for example, carbohydrates, amino acids, lipids, nucleic acids, enzymes, etc.

In blood precipitation test, it has been proved that the man is more closely related to dogs.

In a tadpole, if the human thyroxine is injected, it undergoes a metamorphosis. 

Which of the following is an evidence of evolution from molecular biology?

The organs which have a similar basic structure and similar embryonic origin are called 'X' organs. 'X' features arise from adaptive behaviour, to adapt to different environmental conditions and modes of life. The organs which are quite different in fundamental structure and embryonic origin are called 'Y' organs. 'Y' feature arises when two unrelated species adapt themselves to similar climate and environmental condition.

Wings of bird, bat, insects are examples of X or Y?

Name the technique used to detect the age of the fossils. (Radioactive dating/Radioactive carbon/Spectrum dating)

_____ help in tracing the evolutionary pathways.

_____ are the remains of plants or animals that got preserved over millions of years.

Vestigial organs in the organisms of one species are non-functional in the organisms of all the other species.

Complete the analogy.

Fishes: Amphibians :: Reptiles: _____.

Explain the terms ‘analogous organs’ and ‘homologous organs’ with examples.

In what way are homologous organs evidence for evolution? (2)
 

The human forelimb and bat’s forelimb are an example of _____ organs whereas an insect’s wing and a bat’s wing are an example of analogous organs.