Work Sheet 10, 2017Ec

1. One of the following is differ from the other according to Darwin theory
A. Fecundity B. Variation C. Competition D. Survival of the fittest
2. A carbon radioactive element decay for 28650 year. How many % left?
A. 3.12% B.93.75% C.96.88% D. 6.25%
3. A new theory states life could be transported between planets by radiation pressure.
A. Eternity theory B. Panaspermia theory C. Biochemical theory D. Intelligent theory
4. One of the following result a totally different mRNA is produced and a non-functional protein at all
A. Silent B. Non-sense C. Framshift D. Mis sense
5. The bone in human hands, flippers of the whale and wings of the bird are known as
A. Linker fossil B. Homologus structures C. Analogus structures D. Vestigial structures
6. One of the following types of substitiutional mutation has advantageous (survival value) in arid area like
Summra, Gambella and Somalia region of Ethiopia two prevent malaria infection
A . Lekumia B. Down syndrome C. Sickle cell anemia D. Huthington disease
7. One of the following is different from the other?
A. Translocation B. Inversion C. Deletion D. Frameshift
8. One of the following element is absent in primitive (primeval) atmosphere according to Oparin-Halidan
theory about origin of the first form of life ?
A. Methane B. Oxygen C. Nitrogen D. Water vapour
9. One of the following event evolve first?
A. The first photo-autotroph evolve B. The first living cell evolve
C. The first vertebrate evolve D. Formation of ocean & continents
10.A certain rock have a half-life of 1.25 byr. How many years required to decay three forth of the
original radioactive element in rock?
A.3.75 byr B. 11460 byr C.75byr D. 2.5byr
11. According to evolutionary biologists artificial selection is a good indicator for evolution. Because
A. It helps to select some desirable traits B. To eliminate the unfit traits from a population
C. New varieties can be produced D. All are the correct answer
12. One of the following is not the cause of allopatric speciation?
A. Differ in size of their genitalia structure B. A mountain range being created
C. A land mass separating two bodies of water D. River changing course
13. If the DNA of the following animals is hybridized to human DNA, with which one of them would
human DNA hybridize less?
A. Chimpanzee B. Ape C. Horse D. Gorella
14. Which one of the following is not a mutagenic factor for mutation?
A. Carcinogenic substance B. Harmful chemicals like DDT, nerve gas
C. Ultraviolate radiation D. Biting by Tsetse flies
15. What is the reproductive isolating mechanism called if two species of Birds don’t interbread because
they cant understand the mating calls of one another?
A. Seasonal isolation B. Behavioural isolation
C. Temporal isolation D. Isolation by distance
16. The earliest form of life on earth is
A. prokaryotic, heterotrophs B. prokaryotic, autotrophs C. eukaryotic cell D. land plants
17. A biologist he criticized Lamarck’s work, after repeated experimentation on the tail of mice. None of
the offspring of mice showed a reduction in tail
A. Charles Darwin B. August Weismann C. Konrad lorenza D. Alferad Wallace
18. One of the following is correct according to Lamarck’s view
A. advantageous allele increase in frequency B. environment play a role in producing phenotypic
change
C. traits are selected by the desire of human D. when resource are limited, there is struggle for survival
19. Insects become fossilized by
A. buried in the mud B. sediments in rock C. they fired D. trapped in resin
20. One of the following fossil formation process occur when by the gradual replacement of body tissues
by water carried mineral deposited
A. fossilization B. sedmentation C. uplifting D. petrification
21.The term homology in structure tells us
A. closely related organisms had a common ancestor B. structure that are similar in function and
appearance
C. structure that are reduced in size have no apparent function D. evolution from different ancestor
22. Allopatric but not sympatric speciation requires
A. reproductive isolation B. geographic isolation C. change in gene pool D. mutation
23. The many spp of Galapagos finches are each adapted to eating different foods.
A. convergent evolution B. phyletic evolution C. adaptive radiation D.sympatric speciation
24. In polluted area , the dark form of the peppered moth increased in numbers due to
A. normalizing selection B. disruptive selection C. directional selection D. stabilizing selection
25. Suppose in a certain population, natural selection removes individuals with average height, leaving
tall and short individuals behind, which of the following modes of selection is in operation?
A. normalizing selection B. disruptive selection C. directional selection D. stabilizing selection
26. Which evolutionary evidence was very unlikely to have been used by Darwin in the formation of the
theory of evolution?
A. comparative anatomy B. comparative biochemistry C. geographical distribution D.fossil record
27. In the process of the evolution of life on earth, which of the following process occur last?
A. land plant emerge B. eukaryote evolve C. multicellular organism raise D. origin of Homo sapience
28. Among the following , which one is the best criteria to show that two populations having the same
species
A. Morphological similarity B. having the same origin
C. inhabiting the same geographic area D. production of fertile offspring
29. What is the reproductive isolating mechanism called if two species of frogs which live in the same
habitat. But interbreeding can’t occur because maturation of egg occur in summer while sperm produce
in spring
A. behavioral isolation B. temporal isolation C. mechanical isolation D. ethiological isolation
30. Animals without close evolutionary relations are sometimes seen to have similar structures adapted
for the same function. Which evolutionary type is occur
A. convergent B. pyletic C. divergent D. allopatric
31. In spite of their ability to form hybrids when mating, which one of the following factors is to keep the
horse and the donkey as separate spp
 A. their hybrid is not viable B. their hybrid is sterile
C. they are ecologically isolated D .they can’t form hybrid zygote
“ You are in evolution, So change your mind to become the newly evolved modern human in the near
future”