61. In which form nitrogen is taken by plants generally?
(A) Nitrate
(B) Chloride
(C) Oxide
(D) Nitrite
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62. “Bent neck” is the physiological disorder of which flower?
(A) Rose
(B) Marigold
(C) Jasmine
(D) Chrysanthemum
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63. Which of the following is strongest acid ?
(A) HCI
(B) HI
(C) HBr
(D) HF
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64. Which of the following is not a Lewis Acid?
(A) Br+
(B) H+
(C) BCI3
(D) OH–
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65. Polyembryony commonly occurs in
(A) Banana
(B) Tomato
(C) Lime
(D) Potato
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66. Which bacteria is rod shaped?
(A) Coccus
(B) Spirillum
(C) Bacillus
(D) Vibrio
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67. In females two oviducts open separately into urinogenital sinus, so that there are two uteri and two vaginae. To which of the following this character correlates?
(A) Prototheria
(B) Metatheria
(C) Eutheria
(D) Primata
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68. Which of the following is not a breed of goat?
(A) Gaddi
(B) Angora
(C) Karakul
(D) Anglo Nubian
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69. Which of the following is meta directing group in electrophilic substitution reactions of benzene ?
(A) -NO2
(B) -OH
(C)-CI
(D) -Br
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70. Study the following diagram. Various important parts are numbered 1-4. Choose the correct option related with the secretion of NH+4 and K+ into the urine.
(A) 1 and 2
(B) 2 and 3
(C) 1 and 4
(D) 2 and 4
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