Question

Nitrogen fixer soil organisms belong to

A. mosses
B. bacteria  
C. green algae
D. soil fungi
Answer :   bacteria
Solution :
Only some bacteria and blue green algae (cynobacteria) have the capacity to fix atmospheric nitrogen.
• Bacteria : Azotobacter, Rhizobium, Frankia e.t.c.
• Blue green algae : Nostoc, Oscillatoria, Anabaena e.t.c.

Releted MCQ Question on
Botany >> Biological Classification

Releted Question 1

Pick up the wrong statement

A. Protista have photosynthetic and heterotrophic modes of nutrition
B. Some fungi are edible
C. Nuclear membrane is present in Monera
D. Cell wall is absent in Animalia
View Answer
Releted Question 2

Five kingdom system of classification suggested by R.H. Whittaker is not based on:

A. Presence or absence of a well defined nucleus
B. Mode of reproduction
C. Mode of nutrition
D. Complexity of body organisation
View Answer
Releted Question 3

In the five-kingdom system of classification, which single kingdom out of the following can include blue green algae, nitrogen-fixing bacteria and methanogenic archaebacteria?

A. Fungi
B. Plantae
C. Protista
D. Monera
View Answer
Releted Question 4

In five kingdom system, the main basis of classification is

A. structure of nucleus
B. mode of nutrition
C. structure of cell wall
D. asexual reproduction
View Answer

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Biological Classification

Practice More MCQ Question on Biology Section

BotanyThe Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisonTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and DevelopmentReproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental IssuesBotany Miscellaneous
ZoologyAnimal KingdomStructural Organisation in AnimalsBiomoleculesDigestion and AbsorptionBreathing and Exchange of GasesBody Fluids and CirculationExcretory Products and Their EliminationLocomotion and MovementNeural Control and CoordinationChemical Coordination and IntegrationHuman ReproductionReproductive HealthEvolutionHuman Health and DiseasesBiotechnology: Principles and ProcessesBiotechnology and its ApplicationsZoology Miscellaneous