1. Which one of the following is not anessential mineral element for plantswhile the remaining three are? [2011M]

2. Which one of the following is not anessential element for plants? [1996]

3. Which one of the following is wrongstatement

4. Read the following four statements(A-D). (A) Both - photophosphorylationand oxidative phosphorylation involveuphill transport of protons across themembrane. (B) In dicot stems - a newcambium originates from cells ofpericycle at the time of secondarygrowth. (C) Stamens in flowers ofGloriosa and Petunia are polyandrous.(D) Symbiotic nitrogen-fixers occur infreeliving state also in soil. How many ofthe above statements are correct?[2012M]

5. Enzyme involved in nitrogenassimilation [2001]

6. Which of the following is a symbioticnitroger fixer? [2009]

7. An element playing important role innitrogen fixation is: [2010]

8. Which of the following is not causedby deficiency of mineral nutrition?[1997]

9. Which two distinct microbialprocesses are responsible for the releaseof fixed nitrogen as dinitrogen gas (N2)to the atmosphere? [NEET Kar. 2013]

10. Mycorrhiza is a symbiotic relationshipbetween roots of higher plants and[1995]

11. Phosphorous and nitrogen ionsgenerally get depleted in soil becausethey usually occur as [1989]

12. The major portion of the dry weightof plants comprises of [2003]

13. A plant requires magnesium for[2007]

14. Which one of the following pairs iswrongly matched? [2009]

15. A pair of insectivorous plants is[1999]

16. Which one of the followingcorrectly matched? [2012]

17. Which one is an essential mineral - notconstituentofanyenzymebutstimulates the activity of many enzymes[1989]

18. Which one of the following elementsis not an essential micronutrient forplant growth? [2007]

19. Which of the following is a free livingaerobic nonphotosyntheticnitrogenfixer? [1997]

20. Which one of the following is not amicronutrient? [2010]

21. Boron in green plants assists in[2003]

22. For its activity - carboxypeptidaserequires [2012M]

23. Minerals absorbed by roots move tothe leaf through [1988]

24. Nitrifying bacteria: [2011]

25. The plants grown in magnesiumdeficient but urea sprayed soil wouldshow [2000]