21. Who coined the term ecotype ?
(A) Odum
(B) Turessan
(C) Tansley
(D) Warming
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22. In poisonous snakes, fangs are modified
(A) Maxillary teeth
(B) Mandibular teeth
(C) Molar teeth
(D) None of these
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23. Which of the following blot procedures is used for the detection of DNA ?
(A) Northern blot
(B) Southern blot
(C) Western blot
(D) South-western blot
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24. Viviparity generally occurs in
(A) Wuchereria
(B) Ancylostoma
(C) Enterobius
(D) Trichuris
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25. Tehri Dam is constructed on which river ?
(A) Yamuna
(B) Ram Ganga
(C) Bhagirathi
(D) Alaknanda
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26. Which of the following rule explains that the extremities such as tails, legs and horn of animals are shorter in colder regions
(A) Bergman’s rule
(B) Glogan’s rule
(C) Jordan’s rule
(D) Allen’s rule
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27. Which of the following is related to the study of phylogenetic tree?
(A) Idiogram
(B) Electropherogram
(C) Cladogram
(D) Chromatogram
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28. Which of the following properties of Type Il restriction endonucleases make them very useful in the field of genetic engineering ?
(A) They cleave DNA within their recognition sequence
(B) They require no ATP
(C) They recognize a palindomic sequence of 4 to 6 bp long nucleotides
(D) All of the above
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29. A symport system moves
(A) One type of molecules unidirectionally
(B) Two solutes unidirectionally
(C) Two types of molecules in opposite directions
(D) One type of molecules bidirectionally
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30. Which of the following aquatic biomes has the highest primary productivity ?
(A) Swamps
(B) Coral reefs
(C) Estuary
(D) None of the above
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31. “Blue baby syndrome” caused by impure water of
(A) Arsenic
(B) Cadmium
(C) Nitrate
(D) Mercury
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32. Making of a web by the spider is an example of
(A) Fixed action pattern
(B) Imprinting
(C) Learned behaviour
(D) Releaser
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33. A radially symmetrical invertebrate animal, with differentiation of tissues only, will be placed in
(A) Porifera
(B) Cnidaria
(C) Platyhelminthes
(D) Echinodermata
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34. PCR cycle is also known as
(A) C2 cycle
(B) C3 cycle
(C) Kreb cycle
(D) EMP pathway
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35. Plastids that synthesize and store fat are
(A) Eoplasts
(B) Etioplasts
(C) Elsioplasts
(D) Gerontoplasts
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36. The alkaloid reserpine is contained in the roots of
(A) Papaver somniferum
(B) Cinchona officinalis
(C) Rauwolfia serpentina
(D) All the above
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37. In plants Agrobacterium thizogenes causes
(A) Root Rot
(B) Root Proliferation
(C) Tumor Formation
(D) Nodule Formation
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38. Milk protein Casein is coagulated by
(A) Pepsin
(B) Trypsin
(C) Rennin
(D) Renin
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39. Plants with latex and unisexual Flowers are found in
(A) Ranunculaceae
(B) Rutaceae
(C) Amaranthaceae
(D) Euphorbiaceae
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40. In bony fish, reptiles and birds the cleavage is
(A) Meroblastic superficial
(B) Holoblastic unequal
(C) Meroblastic discoidal
(D) Holoblastic radial
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RO