Self Studies
Self Studies
Self Studies
Self Studies

Mineral Nutrition Test - 50

Result Self Studies

Mineral Nutrition Test - 50
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    Bacterium associated with legume roots is
    Solution
    Legumes are in symbiotic association with nitrogen-fixing bacteria like Rhizobium. They fix nitrogen with the help of bacteria that live in their roots. These bacteria invade root hairs of leguminous plants and forms root nodules in which they fix nitrogen. A red pigment present in the root nodules of leguminous plants is known as leghaemoglobin. 
    Thus, the correct answer is 'Rhizobium.'
  • Question 2
    1 / -0
    A completely free living organism which takes part in nitrogen fixation is
    Solution
    The atmospheric nitrogen is not available to plants. There are some nitrogen fixing bacteria which converts atmospheric nitrogen into ammonia which is readily available to plants. Azotobacter are free-living nitrogen fixing bacteria. Anabaena is a free-living nitrogen fixing bacteria. However, it also forms symbiotic association with plants like mosquito fern. Hence, they are symbiotic bacteria as well.
    Thus, the correct answer is 'Azotobacter.'
  • Question 3
    1 / -0
    A non-legume, symbiotic nitrogen fixing bacterium is
    Solution
    Atmospheric nitrogen is not available for plants. However, nitrogen-fixing bacteria convert atmospheric nitrogen into ammonia and make it available to plants. Azotobacter is a free-living nitrogen-fixing bacterium. Rhizobium is a symbiotic nitrogen-fixing bacterium. It fixes atmospheric nitrogen with symbiotic association with legume plants. Frankia is a non-legume symbiotic nitrogen-fixing bacterium. Clostridium is free-living anaerobic nitrogen-fixing bacterium.
    Thus, the correct answer is 'Frankia.'
  • Question 4
    1 / -0
    Nitrogen fixation can be represented as
    Solution
    Nitrogen fixation is a process by which atmospheric nitrogen is converted into ammonia and other compounds like nitrate. These nitrogenous compounds are then made available for plants. Bacteria involved in the process of nitrogen fixation are called as nitrogen fixing bacteria. Examples include Rhizobium, Azotobacter.
    Thus, the correct answer is 'Both A and B.'
  • Question 5
    1 / -0
    Which one is a nitrogen fixer blue green algae?
    Solution
    Anabaena is a Blue Green algae. It is a unicellular prokaryotic organism. It does not have membrane-bound organelles or true nucleus. It is used as nitrogen fixing bacteria. It fixes atmospheric nitrogen into ammonia and make it available to the plants. 
    Thus, the correct answer is 'Anabaena.'
  • Question 6
    1 / -0
    Which is the role of molybdenum?
    Solution
    The role of molybdenum is certainly nitrogen fixation as it is present in the conjugated form with iron in the enzymes required for nitrogen fixation. It is present in nitrogenase as well as nitrite and nitrate reductase enzymes.
    Thus the correct answer is option A.
  • Question 7
    1 / -0
    Internal cork of Apple$$/$$browning of Cauliflower is deficiency symptom of
    Solution
    Nutrients are essential for the growth and development of organisms. In the absences of it causes disease called as deficiency disease. Its symptoms are as follows:     
    Mo- Mottled chlorosis with marginal chlorosis and infolding, lamina or upper half of lamina falls, loosening of inflorescence in cauliflower, slight growth retardation, whiptail disease.
     B- Loss of apical dominance, abscission of flowers, absence of root nodules in leguminous plants, browning of cauliflower.
     Cu- Die back, skin splitting, leaf tip necrosis, blackening of potato tuber.
     Zn- Leaf malformation, little leaf, leaf rossette, interveinal chlorosis, white bud, stunted growth.
     Hence, B is the correct answer.
  • Question 8
    1 / -0
    Micronutrients$$/$$ trace elements are those that.
    Solution
    Micronutrients are those mineral elements which are required by plants in trace or small quantities ( less than 0.1 mg/mg of dry matter).
    They are generally required in the functioning of enzymes, as cofactors or metal activators.
    These elements become toxic if increase in concentration.
    Examples are Fe, B, Cu, Co, Zn, Mn, Mo etc.
    So, the correct answer is option D.
  • Question 9
    1 / -0
    Chlorosis results from deficiency of
    Solution
    Chlorosis occurs due to the deficiency of magnesium as this mineral ion is required for the synthesis of chlorophyll. So lack of this mineral does yellowing of the leaves which is termed as chlorosis. Hence the correct answer is option D.
  • Question 10
    1 / -0
    Ion channels have been discovered by 
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now