Useful for Medical Entrance Exams: AIPMT / AFMC /JIPMER / AIIMS / JIPMER /Manipal UGET / CMC Vellore / AMU/ BHU

NEET Karnataka 2013 Biology Questions and Answers

Medical biology previous questions
11. Meristematic tissue responsible for increase in girth of tree trunk is
a) Apical meristem
b) Intercalary meristem
c) Lateral meristem
d) Phellogen
12. Inflorescence is racemose in
a. Soyabean
b. Brinjal
c. Tulip
d. Aloe
13. During the metaphase stage of mitosis spindle fibres attach to chromosomes at
a. Centromere
b. Kinetochore
c. Both centromere and kinetochore
d. Centromere, kinetochore and areas adjoining centromere
14. Uridine, present only in RNA is a
a. Pyrimidine
b. Nucleoside
c. Nucleotide
d. Purine
15. The term 'glycocalyx' is used for
a. A layer surrounding the cell wall of bacteria
b. A layer present between cell wall and membrane of bacteria
c. Cell wall of bacteria
d. Bacterial cell glyco-engineered to possess N-glycosylated proteins
16. Which of the following type of plastids does not contain stored food material?
a. Amyloplasts
b. Chromoplasts
c. Eleioplasts
d. Aleuroplasts
17. During meiosis I, the chromosomes start pairing at
a. Leptotene
b. Zygotene
c. Pachytene
d. Diplotene
18. Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere?
a. Anaerobic ammonium oxidation, and denitrification
b. Aerobic nitrate oxidation, and nitrite reduction
c. Decomposition of organic nitrogen, and conversion of dinitrogen to ammonium compounds
d. Enteric fermentation in cattle, and nitrogen fixation by Rhizobium in root nodules of legumes
19. Which of the following best illustrates feedback in development?
a. As tissue (X) develops, it secretes something that slows down the growth of tissue (Y)
b. Tissue (X) secretes RNA which changes the development of tissue (Y)
c. As tissue (X) develops, it secretes enzymes that inhibit the development of tissue (Y)
d. As tissue (X) develops, it secretes something that induces tissue (Y) to develop
20. The viability of seeds is tested by
a. Safranine
b. 2, 6 dichlorophenol indophenols
c. 2, 3, 5 triphenyl tetrazolium chloride
d. DMSO
Answers
11. c) Lateral meristem
12. a. Soyabean
13. b. Kinetochore
14. b. Nucleoside
15. a. A layer surrounding the cell wall of bacteria
16. b. Chromoplasts
17. b. Zygotene
18. a. Anaerobic ammonium oxidation, and denitrification
19. d. As tissue (X) develops, it secretes something that induces tissue (Y) to develop
20. c. 2, 3, 5 triphenyl tetrazolium chloride

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