Some plants have nitrogen-fixing bacteria in their root nodules. … - Vidyadip

MCQ

Some plants have nitrogen$-$fixing bacteria in their root nodules. What are these bacteria called?

✓
Rhizobium
B
Blue green algae
C
Azotobacter
D
Nitrosomonas

✓

Answer

Correct option: A.

Rhizobium

Leguminous plants like pea have nitrogen-fixing bacteria called Rhizobium in their root nodules. Rhizobium helps in converting atmospheric nitrogen into ammonia that can be utilized by the pea plant for its nutrition. Other bacteria like Nitrosomonas and Azotobacter are free$-$living soil bacteria that also help in nitrogen fixation.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [I MARKS]" from Microorganisms: Friend and Foe→Microorganisms: Friend and Foe — all question types→Science STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

Knives, needles, saws are made sharp or pointed to:

Which one of the following is a source of water pollution?

Which of the following effects is not produced by the chemical reactions brought about by an electric current?

Which of the following articles is made by using only man$-$made substances?

Full name of “aids”. Choose the correct options:

Select the incorrect statements among the following:
$i.$ Bitumen is used for metalling the roads.
$ii.$ Some inexhaustible natural resources like coal, petroleum and natural gas formed from the dead remains of living organisms are known as fossil fuels.
$iii.$ Many useful substances are obtained from coal $($commercial importance$),$ so it is also called as 'Black gold'.
$iv.$ Natural gas is used as a starting material for the manufacture of a number of chemicals and fertilisers.

How many types of charges are gained by rubbing objects$?$

A man having blood group $O$ married a women with blood group $B$ and they have a girl child after one year. The blood group of the girl child will be:

United Football Club are playing an evening match. The team's jersey has blue and white stripes. What colour would the stripes appear under floodlights which produce a yellow light?

Which of the following has cross-linked polymer chains$?$