Entrance Examination Model Question (MBBS, BE, Nursing, Agriculture, Veterinary, BPH, BMLT, BPharm, BTech) 7

1.      XY sex chromosomes were discovered by a. Mendel b. Brown c. Stevans d. White

2.      Which plant is entomophilous? a. Zostera marina b. Sterlitzia regninae c. Aristolochia fimbriata d. Kigelia Africana

3.      Which of the following is the constituent of cell wall? a) Calcium b) Zinc c) Iron d) Boron

4.      Which of the following is a rootless fossil plant? a. Lepidodendron b. Lyginopteris c. Rhynia d. Williamsonia

5.      Which is not a nutritive tissue? a. Tapetum b. Endosperm c. Endothelium d. Endothecium

6.      Under water stress, the leaves of plants are found to contain higher concentration of a. Gibberellic acid b. Cytokinins c. Auxins d. Abscisic acid

7.      The protein in the pollen wall that causes allergy is contributed by a. exine b. pollen cytoplasm c. tapetum d. intine

8.      The grafting method practiced in a stock with diameter many times more than that of scion is called a. Tongue grafting b. Wedge grafting c. Crown grafting d. Approach grafting

9.      The germination of seed with the fruit while still attached to mother plants is a) ovipary b) Parthenocarpy c) Vivipary d) Senescence

10.  The germination of seed with the fruit while still attached to mother plants is a. ovipary b. parthenocarpy c. vivipary d. senescence

11.  The DNA found in all living organisms is a. left handed DNA b. right handed DNA c. both d. Z-DNA

12.  The bio fertilizer found in the roots of legume is a) Anabaena b) Rhizobium c) Azosporillum d) all of these

13.  Sex determination was first of all studied in which plant? a. Rumex b. Datura c. Melandrium d. Mirabilis

14.  Photosynthesis is maximum in --- wave a) red b) Blue c) Violet d) Yellow

15.  Operon concept was discovered by a) Jacob & Monad b) Beadle & Tatum c) Leadburg & Tatum d) Temin and Baltimore

16.  Okazaki fragments are formed on a) Lagging strand b) Leading strand c) Stagnant strand d) Sense strand

17.  Nitrate reductase enzyme forms a. NO₃^- b. NO₂^- c. N₂ d. Amino acid

18.  In all, a minimum of how many meiotic divisions are required to form 100 sexual seeds? a. 25 b. 50 c. 100 d. 125

19.  In a dihybrid cross, two recessive genes show 10% recombinants. The distance is a. 10 mu  b. 20mu c. 5mu d. 100mu.

20.  Alternative forms of same gene is called a) Allele b) allelomorph c) Non allelic d) Both a and b