Home
Class 7
BIOLOGY
Assertion A : Only some micro organisms ...

Assertion A : Only some micro organisms can fix atmospheric nitrogen.
Reason R : Nitrogen is present abundantly in atmopshere.

A

A & R are correct, R is a correct explanation of A

B

A & R are correct, R is not a correct explanation of A

C

A is false but R is true

D

A is true but R is false

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • FOREST :OUR LIFE

    NCERT TELUGU|Exercise EXERCISE|55 Videos

  • Model Paper-III

    NCERT TELUGU|Exercise Exercise |32 Videos

Similar Questions

Explore conceptually related problems

_____% of nitrogen is present in the atmosphere.

Which of the following can fix atmospheric nitrogen ?

The micro organisms that help plants to provide nitrogen to the plants -

Most atmospheric nitrogen is ‘fixed’ through _____ processes.

Free living organism is which fixes nitrogen is -

Assertion (A) : The temperature in the thermosphere increases with altitude. Reason (R) : Ozone present in stratosphere absorbs ultraviolet radiation

Assertion (A) : Onion vanilla essence can be used as olfactory indicators. Reason (R) : some substances change their odour in acidic or basic media.

Assertion (A) : The elbow joint is a hinge joint.Reason (R) : Hinge joint allows movement in one plane only.

Which of the following can fix the atmospheric nitrogen both in symbiotic and non-symbiotic manner ?