Botany (M.Phil./Ph.D.) 2022 Panjab University Entrance Exam With Answers

Prepare for Botany (M.Phil./Ph.D.) Panjab University Entrance in MCQ format with answers. Boost your success with Jetty Study's comprehensive resources.

1. Function of β – mercaptoethanol in SDS-PAGE __________

2. The variation in the restriction DNA fragment lengths between individuals of a species is called:

3. A researcher is said to be committed the Type 1 error when_________

4. Retardation factor (RF) is the ratio of ________

5. Photosynthetic pigments are separated by using paper chromatography; the order of pigments on chromatogram is as follows:

6. Acid-fast staining is a differential stain used to identify acid-fast organisms (genus Mycobacterium). The procedure of acid-fast staining includes heating of bacteria and mixing basic fuchsin phenol. Once basic fuchsinpenetrates the cell wall, acid-fast cells are not easily decolorized by an acid alcohol treatment and hence remain red this is because of which component:-

7. Lactose permease formed a channel during processing for transport of lactose from outside to inside cell, it is an example of

8. A scientist is performing is an experiment of synthesis of very-long-chain fatty acid. But unable to get the same result, the reason behind this

9. The interaction of CDK-2 & Cyclin A helps in

10. Separation of charged molecules is based on varying rates of migration through a solid matrix when subjected to an electric field?

11. What are the techniques used to transfer protein onto nitrocellulose paper?

12. Optical density of 1 means

13. A Competitive inhibitor:

14. Which of the following types of chromatography involves the process, where the mobile phase moves through the stationary phase by the influence of gravity or capillary action?

15. Cellular respiration/ cellular viability of seeds and pollen grains can be analysed by using which of the following dye:

16. Transmission Electron Microscopy (TEM) is most often used to reveal __________.

17. Which of the following pair of molecular markers is co-dominant?

18. Southern blotting, Northern blotting and Western blotting, mainly separates_____,____ and _____ respectively.

19. Some floral characters and their taxonomic status are shown below

20. Four groups of students gather following data in order to study species diversity at 4 different locations of a site using quadrat method. Different locations here represent 4 plant communities.

21. DPX, a colourless synthetic mounting media used for histology

22. Tick mark the INCORRECT statement regarding sterilization techniques employed in plant tissue culture:

23. Cell A has osmotic potential of -20 bars and pressure potential of 8 bars, whereas, cell B has osmotic potential of -16 bars and pressure potential 2 bars. The direction of flow of water will be:

24. Glycerol is added to protein samples before they are loaded to the wells of PAGE. The function of glycerol is to_________

25. Which one of the following chemicals is a DNA intercalator?

26. In terpenes biosynthesis pathway, 3 acetyl-CoA are joined together stepwise to form mevalonic acid. Which one of the following three steps is required by mevalonic acid to form isopentenyldiphosphate or isopentenyl pyrophosphate (IPP)?

27. Calyptra develops from?

28. Which part of capsule produces sporogenous cells in Marchantia ?

29. In which bryophyte the sporophyte is partially independent with unlimited growth?

30. In Sphagnum, the gametophyte structure compensating for the absence of seta is known as?

31. Eusporangiate mode of sporangium development is found in?

32. Which one of the following features is not correct about ‘horse tail’ plant strobilus?

33. In Raunkiaer’s life form, tuberous plants are kept in?

34. The facilitation model of succession characterizes the following?

35. Rhizobial genes that participate in legume nodule formation are called nodulation (nod) genes. The nod-encoded protein

36. DCMU herbicide inhibits photosynthesis at photosystem during:

37. Plants dissipate excess excitation energy as heat so as to protect from photo oxidative damage. The mechanism is known as

38. α-Amanitin is a fungal toxin which inhibits eukaryotic RNA polymerases. The eukaryotic RNA polymerases show differential sensitivity to this toxin. Which of the following order is correct:

39. Which of the algae is responsible for red colour of red sea?

40. Carpogonia is the female sex organ in which of the algae?

41. Two lateral flagella are present in which of following groups of algae?

42. Which fungi cause black wart disease of potato?

43. Bunt of rice is caused by which of the following fungus?

44. In cellular respiration, which of the following processes occur only inside mitochondria and not in the cytoplasm?

45. What kind of aneuploidy gametes will be generated if meiotic non disjunction occurs at first division? (“n” represents the haploid number of chromosomes)

46. APG IV gives an update on classification of angiosperms at the level of:

47. Which of the following medicinal plant is used for treatment of hypertension?

48. The development of a diploid gametophyte from sporophytes without gamete formation is called:

49. Tetrasporicsporic type of embryo sac development found in;

50. Diploxylic vascular bundle is found in;