Question
Sequence the principal stages of biological nitrogen
fixation in their correct order of occurence- (A). Formation of infection thread (B). Rhizobium multiply to colonise. (C). Curling of root hair (D). Differentiation of cortical cells into nitrogen fixing cells Choose the correct answer from the options given below.Solution
The sequence for nitrogen fixation by Rhizobium in legumes involves: (B) Rhizobium multiply to colonize: Bacteria colonize the root surface. (C) Curling of root hair: Root hairs curl in response to bacterial signals.
In the question below, some statements are given followed by three conclusions I, II and III. You have to take the given statements to be true even if ...
- Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance wi...
Statements:
No plant is a tree.
No tree is a shrub.
No shrub is a herb.
Conclusions:                  �...
Statements:
Only a few Radio are Gramophone
No Gramophone are TV
Only a few TV is Recorder
Conclusions:
In the quest...
Statements:Â
Only a few Apples are Kiwis.
All Kiwis are Pears.
No Pear is a Banana.
Conclusions:
I. Some Apples are ...
Statements: No data is a number.
Some numbers are not letters.
Only letters are consonants.
Conclusions: I. All letters may be co...
In the question below some statements are given followed by three conclusions I, II and III. You have to take the given statements to be true even if t...
Statement:
Some Myntra are Ajio
Only a few Ajio are Amazon            Â
Conclusion:
I. Some M...
Statements:Some students are Rich.
     No Rich is a teacher.
Conclusions:I. Some teacher are not Rich.
  II. Some Rich...
Statements:
Only Biscuit are Chocolate.
Only few Biscuit are Snacks.
All Snacks are Beverages.
Conclusion:
Some B...
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