Which of the following statements is false?

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(D) The correct answer is $D$. $1$. $Anabaena$ is an autotrophic cyanobacterium capable of nitrogen fixation. $2$. Cyanobacteria,such as $Anabaena$ an

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Rhizobium bacteria are free-living.

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(D) The correct answer is $D$. $1$. $Anabaena$ is an autotrophic cyanobacterium capable of nitrogen fixation. $2$. Cyanobacteria,such as $Anabaena$ and $Nostoc$,are widely used as biofertilizers in paddy fields to enhance soil fertility. $3$. Blue-green algae (cyanobacteria) add organic matter to the soil and increase its fertility. $4$. $Rhizobium$ is a symbiotic bacterium that lives in the root nodules of leguminous plants,not a free-living bacterium. Therefore,the statement that $Rhizobium$ is free-living is false.

Similar Questions

Which of the following processes involves the direct transfer of genetic material from one bacterium to another?

Which of the following is not true for the heterocyst of $Nostoc$?

$A$: Blue-green algae are prokaryotic algae.
$R$: Blue-green algae contain $70S$ type ribosomes.

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