State the hypothesis of Oparin and Haldane about the primeval earth condition. What do you understand by Haldane’s hot, dilute soup ? State its significance.

Solution

Alexander I. Oparin (1894-1980), a Russian biochemist and J.B.S. Haldane (1892-1964), a British scientist have put forward the concept of abiogenesis. According to Oparin and Haldane primeval earth had reducing condition and atmosphere is free from oxygen. Oxygen remained bound in H₂0 and metallic oxides on the surface of rocks and its particles. The early gas cloud was rich in hydrogen, in the form of methane (CH₄) and ammonia (NH₃) and water (H₂0). The organic molecules formed due to atmospheric reaction accumulated slowly and gradually in sea and constitute what is called 'Hot, dilute soup'.

Significance of hot dilute soup. Thus conditions of reducing nature are unable to oxidize these organic compounds which form the basis of life.

Some More Questions From Evolution Chapter

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Evolution

State the hypothesis of Oparin and Haldane about the primeval earth condition. What do you understand by Haldane’s hot, dilute soup ? State its significance.

Some More Questions From Evolution Chapter

What is meant by the term fossil ?

What is the type of evolution in which the same structure developed along different directions due to adaptations to different needs ?

Name the different eras of geologic time scale.

What is single step large mutation?

Consider a thorn in Bougainvillea and a tendril in cucurbita. Are these two organs homologous or analogous ? Give reason.

Give two examples that represent adaptive radiation.

Which theory attempts to explain to us the origin of universe?

Evolution is a discontinuous process. Is it correct ?

Give the three key factors of the modern concept of evolution.

Which other term can be used for natural selection ?

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