XII - ZOO - CH - 7 - EVOLUTION - PART 1

From his experiments, SL Miller produced amino acids by mixing the following in a closed flask

• (a) CH₃ ,H₂ ,NH₄ and water vapour at 800°C

• (b) CH₄, H₂, NH₃ and water vapour at 600°C

• (c) CH₃, H₂, NH₃ and water vapour at 600°C

• (d) CH₄, H₂, NH₃ and water vapour at 800°C

Who proposed that the first form of life come from pre - existing non- living molecule

• (a) Oparin and Haldane

• (b) de Vries and Haldane

• (c) Darwin and Lamarck

• (d) Louis Pasteur and Miller

Atmosphere of earth just before the origin of life consisted of

• (a) water vapours, CH₄ , NH₃ and oxygen

• (b) CO₂ , NH₃ , and CH₂

• (c) CH₄ , NH₃ , H₂ and water vapours

• (d) CH₄ , O₃ , O₂ and water vapours

Analogous organs are

• (a) different in origin but perform similar functions

• (b) common in origin and perform common functions

• (c) common in origin but perform different functions

• (d) different in origin and perform different functions

Homologous organs show

• (a) divergent evolution

• (b) convergent evolution

• (c) parallel evolution

• (d) both (b) and (c)

What is common amongst whale, seal and shark?

• (a) Homoiothermy

• (b) Seasonal migration

• (c) Thick subcutaneous fat

• (d) Convergent evolution

Thorn of Bougainvillea and tendril of Cucurbita are examples of

• (a) retrogressive evolution

• (b) analogous organs

• (c) homologous organs

• (d) vestigial organs

Evolutionary history of an organism is known as

• (a) ancestry

• (b) palaeontology

• (c) ontogeny

• (d) phylogeny

Which one of the following amino acid was not found to be synthesised in Miller’s experiment?

• (a) Aspartic acid

• (b) Glutamic acid

• (c) Alanine

• (d) Glycine

Which was absent in the atmosphere at the time of origin of life?

• (a) NH₃

• (b) H₂

• (c) O₂

• (d) CH₄