1. Troublesome American water weed found in India is
   (a) Vallisneria (b) Eichhornia
   (c) Hydrilla (d) Lemna.


2. Endangered plant species are conserved through
   (a) herbarium (b) cryopreservation
   (c) gene bank (d) tissue culture.


3. Which of the following regions of our country are known for
   their rich biodiversity?
   (a) Western Ghats and Eastern Himalayas
   (b) Western Ghats and Deccan Plateau
   (c) Eastern Himalayas and Gangetic Plain
   (d) Trans Himalayas and Deccan Peninsula


4. The worst threat to wildlife is by
   (a) habitat destruction (b) hunting
   (c) overgrazing (d) exotic species.


5. Breeding place of Flamingo (Hansawar) in India is
   (a) Sambhar lake (b) Chilka lake
   (c) Rann of Kutch (d) Ghana Vihar.


6. A woman with blood group “O” has a child with blood
   group“O”. If she claims a friend of hers with blood group
   ‘A’ as father of the child, the genotype of the father should
   be
   (a) I OI O (b) I AI B
   (c) I AI O (d) I BI O.


7. Gene sequencing has been done for a number of organisms.
   Among the four organisms given below choose the organism
   not sequenced.
   (a) Drosophila melanogaster
   (b) Saccharomyces
   (c) Oryza sativa
   (d) Solanum tuberosum


8. Stanley Miller and urey proved abiotic origin of life by using
   one of the following sets of chemicals in the lab.
   (a) CH 4 , H 2 , NH 3 (b) CH 4 , H 2 , NH 3 , O 2
   (c) CH 4 and NH 3 (d) CH 4 , H 2 , O 2
   9. Distance between the genes and percentage of
   recombination show
   (a) a direct relationship
   (b) an inverse relationship
   (c) a parallel relationship
   (d) no relationship.
   10. Fossils act as evidences of organic evolution. Which one of
   these features does not justify the feature of fossils?
   (a) They are remains of hard parts of life forms that existed
   in the past.
   (b) They are the remains of decayed and decomposed
   body parts.
   (c) Fossils present in the lower strata of the earth are older
   than those present in the upper strata.
   (d) Study of fossils in different sedimentary layers indicates
   the geological period in which they existed.
   11. Development of hybrid varieties of plants and better milk
   yielding varieties of cows is an example of
   (a) natural selection (b) artificial selection
   (c) mutation (d) divergent evolution.
   12. According to the theory of spontaneous generation
   (a) life originated from outer space
   (b) life originated from decaying and rotting matter like
   straw, mud etc.
   (c) life came from pre-existing life
   (d) life came from both living and non-living matter.
   13. The chromosomal pattern of Klinefelter’s syndrome is
   (a) XXX (b) XXy
   (c) XO (d) Xyy.
   14. The most important component of oral contraceptive pill is
   (a) progesterone (b) growth hormone
   (c) thyroxine (d) luteinizing hormone.
   15. Papaya is a dioecious plant. This condition prevents
   (a) both autogamy and geitonogamy
   (b) only autogamy
   (c) only xenogamy
   (d) geitonogamy.

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