Home
Class 12
BIOLOGY
Assertion: Nitrogen-fixing bacteria of l...

Assertion: Nitrogen-fixing bacteria of legume nodules live in `O_2` depleted cells.
Reason: Leghaemoglobin completely removes `O_2` from the nodule cells.

A

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B

If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.

C

If Assertion is true but the Reason is false.

D

If both Assertion and Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MICROBES IN HUMAN WELFARE

    ICSE|Exercise COMPETITION CORNER (OBJECTIVE TYPE QUESTIONS (MULTIPLE CHOICE QUESTIONS))|44 Videos
  • ISC BOARD PAPER (2019 -BIOLOGY)

    ICSE|Exercise PART-II ( SECTION-C)|12 Videos
  • MOLECULAR BASIS OF INHERITANCE

    ICSE|Exercise MCQ (Source Based Questions)|23 Videos

Similar Questions

Explore conceptually related problems

Assertion : Nitrogen fixing enzyme in legume root nodules function at low oxygen concentration. Reason : Low oxygen concentration is provided by leghaemoglobin.

Assertion : Nitrogenase enzyme gets inactivated in presence of oxygen yet N_(2) fixation occurs in aerobic cells of legume nodules. Reason : Laghaemoglobin allows presence of oxygen just sufficient for cellular respiration only.

The N_(2) -fixing bacterium associated with root nodules of legumes is known as

Assertion : Smoking makes oxgyen less available to the body Reason : In presence CO2,O_2 binds less with haemoglobin.

Assertion :- Oxidation number of carbon in CH_(2)O is zero. Reason :- CH_(2)O (formaldehyde) is a covalent compound.

Assertion : O_(2) is paramagnetic. Reason : It has one unpaired electron.

Read the assertion and reason carefully to mark the correct option in question. 1. Assertion: Cell is the fundamental structural and functional unit of all living organisms. Reason: Anything less than a complete structure of a cell does not ensure independent living.

Assertion (A) : Electrolysis of hard water produces O_2 and D_2 . Reason (R) :Ordinary hydrogen is called protium.

Assertion: Archaebacteria differ from other bacteria only in structure not, in resistance. Reason: Cell wall of Archebacteria is made upof complex peptidoglycans instead of simple peptioglycane.

Assertion :- Bond order of O_(2) and BN is same . Reason O_(2) and BN are isoelectronic