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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Evolution Set 3
Q1 | A. The first molecules formed for replicating cells were most probably RNA.R. This was proved by origin of ribozyme in 1987 by T. Cech in Tetrahymena.
- If A and R both are true and R is correct explanation of A
- If A and R both are true but R is not correct explanation of A
- If A is true and R is wrong
- If A is wrong and R is true
Q2 | Pick up the correct match_ans_key_I. Core of the earth A. Archaeozoic era_ans_key_II. Life originated B. Fe-Ni_ans_key_III. Stromatolites C. Inter-micromolecular assembly_ans_key_IV. TMC is an example D. Photosynthesizing algae
- I – B, II – A, III – D, IV – C
- I – A, II – B, III – C, IV – D
- I – B, II – D, III – C, IV – A
- I – A, II – B, III – D, IV – C
Q3 | A. Arrhenius considered the panspermia mainly responsible for transfer for germs from other planets to Earth._ans_key_R. Present day study of meteorities as Allan Hills-84001 knocked out from Mars in Antarctica is rich aromatic hydrocarbons deposited by biological activity.
- If A and R both are true and R is correct explanation of A
- If A and R both are true but R is not correct explanation of A
- If A is true and R is wrong
- If A is wrong and R is true
Q4 | Coacervates are
- colloidal droplet
- contain nucleoprotein
- (A) and (B)
- protobiont
Q5 | The diagram represents Miller experiment. Choose the correct combination of labelling.
- A – electrodes, B – NH3 + H2 + H2O + CH4, C – cold water, D – Vacuum, E – U trap
- A – electrodes, B – NH4 + H2 + CO2 + CH3, C – hot water, D – Vacuum, E – U trap
- A – electrodes, B – NH3 + H2O, C – hot water, D – tap, E – U trap
- A – electrodes, B – NH3 + H2 + H2O + CH4, C – steam, D – Vacuum, E – U trap
Q6 | The earliest organisms were ______.
- heterotrophic and anaerobic
- autotrophic and anaerobic
- heterotrophic and aerobic
- autotrophic and aerobic
Q7 | Which one of the following is present today but was absent about 3.5 billion years ago ?
- Oxygen
- Nitrogen
- Hydrogen
- Methane
Q8 | Coacervates were experimentally produced by .............
- Sydney Fox and Oparin
- Fischer and Huxley
- Jacob and Monod
- Urey and Miller
Q9 | Urey and Miller in their experiment used a mixture of gases corresponding to primitive earth. Thesewere ______.
- C3, NH3, H2, CO2
- O2, NH3, CH4, H2
- NH3, CH4, H2O, CO2
- CH4, NH3, H2, H2O
Q10 | According to abiogenesis life originate from ______.
- non-living matter
- pre-exiting life
- chemicals
- extra-terrestrial matter
Q11 | Mega – evolution is ______.
- Changes in the gene pool
- evolution due to mutations
- origin of a new biological group
- the evolution that takes centuries
Q12 | Evolutionary convergence is characterised by
- development of dissimilar characteristics in closely related groups
- development of a common set of characteristics in the groups of different ancestry
- development of characteristics by random mating
- replacement of common characteristics in different groups.
Q13 | Parallelism is ______.
- adaptive divergence
- adaptive convergence
- adaptive convergence of far off species
- adaptive convergence of closely related groups.
Q14 | Mesozoic era is associated with mass extinction of ______.
- flowering plant
- trilobite
- Dodo
- dinosaurs
Q15 | Serial homology is exhibited by ______.
- Organs of same individual occupying different levels of the body
- Organs of different organisms with same function
- appendages of various parts of prawn body
- both (A) and (C)
Q16 | Vermiform appendix in man, nictitating membrane and wisdom teeth are ______.
- homologous organ
- analogous organs
- vestigial organs
- none of the above
Q17 | Which one of the following terms would most correctly describe the relationship between the flightorgans of animals like locust, bat, swallow, and flying fish ?
- Atavism
- Analogous
- Homologous
- Vestigeal
Q18 | Appearance of facial hair in some people is an example of
- mongolism
- analogous organs
- atavism
- all above
Q19 | A living connecting link which provides evidence for organic evolution is ______.
- Archeopteryx between reptiles and mammals
- lung fish between pisces and reptiles
- duck billed platypus between reptiles and mammals
- Sphenodon between reptiles and birds
Q20 | Von baer supports the theory of evolution on the basis of
- embryological character
- germs layers
- somatic variations
- genetic variations
Q21 | Which of the following bird will be called most successfully evolved ?
- Lays 2 eggs, 2 hatch and 2 reproduce
- Lays 9 eggs, 9 hatch and 3 reproduce
- Lays 5 eggs, 5 hatch and 5 reproduce
- Lays 10 eggs, 5 hatch and 4 reproduce
Q22 | Biogenetic law states that ______.
- ontogeny repeats phylogeny
- phylogeny repeats ontogeny
- no two living organisms are alike
- the favourable acquired characters are inherited
Q23 | A study of evolution has established the systematic positions in many animals. In some animals chordate characters are absent in adult stage, but present in larval stage, eg. Herdmania has been included in ______.
- crustacea
- protochordata
- dermaptera
- onychophora
Q24 | Many of the animals and plants found on islands are ______.
- endemic
- exotic
- sympatric
- none of these
Q25 | The Haeckel’s theory of biogenetic Law means that ______.
- all organisms start as an egg
- life history of an organism reflects its evolutionary history
- nonliving matter from life
- progeny resembles parents