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NEET 2017
Exam
NEET
Year
2017
Subject
Botany
Chapter
Chapter

NEET 2017 · Botany · Chapter

Select the mismatch:

Select the mismatch:

Options

  1. A{Frankia−Alnus\begin{cases}Frankia & - & \text{A}\text{l}\text{n}\text{u}\text{s}\end{cases}
  2. B{Rhodospirillum−Mycorrhiza\begin{cases}Rhodospirillum & - & \text{M}\text{y}\text{c}\text{o}\text{r}\text{r}\text{h}\text{i}\text{z}\text{a}\end{cases}
  3. C{Anabaena−Nitrogenfixer\begin{cases}Anabaena & - & \text{N}\text{i}\text{t}\text{r}\text{o}\text{g}\text{e}\text{n}\text{f}\text{i}\text{x}\text{e}\text{r}\end{cases}
  4. D{Rhizobium−Alfalfa\begin{cases}Rhizobium & - & \text{A}\text{l}\text{f}\text{a}\text{l}\text{f}\text{a}\end{cases}

Correct answer

B. {Rhodospirillum−Mycorrhiza\begin{cases}Rhodospirillum & - & \text{M}\text{y}\text{c}\text{o}\text{r}\text{r}\text{h}\text{i}\text{z}\text{a}\end{cases}

Step-by-step solution

Amongst the given options Rhodospirillum- mycorrhiza is mismatched. Rhodospirillum is anaerobic, free-living nitrogen fixer. Mycorrhiza is a symbiotic relationship between fungi and roots of higher plants. Anabaena is a cyanobacteria which can fix atmospheric nitrogen. Rhizobium is a symbiotic bacterium with leguminous plants which helps Nitrogen fixation. Frankia is also another cyanobacteria which is associated with Alnus and helps in nitrogen fixation.
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