Home
Class 12
BIOLOGY
Assertion : Mucous membrane immobilises ...

Assertion : Mucous membrane immobilises the micro-organisms in the body.
Reason : Microoganisms and dust particles entering the respiratory tract are trapped in the mucus.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertin is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Innate immunity is non-specific type of defence, that is accomplished by providing different types of defence, that is accomplished by providing different types of barries to the entry of the foregin agents into our body. Mucus coating of the epithelium lining in the respiratory, gastrointestinal and urogenital tracts traps microbes and prevents their entry in our body.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion : Opioids help to enhance respiratory activity. Reason : Opioids are the drugs which binds to specific opioid receptors present in respiratory tract.

Assertion : IgG is the most abundant class of Igs in the body. Reason : IgG is mainly found in sweat, tears, saliva, mucus, colostrum and gastro intestinal secretions.

Assertion :Digested and semi-digested food is absorbed by body surface in tapeworms. Reason: Digestive organs are absent in tapeworms.

Assertion: The loss of biologically useful energy as heat with every energy transfer in a food chain is a consequence of the second law of thermodynamics. Reason: Energy does not remain trapped permanetly in any organism. It is either passed on to higher trophic level or becomes available to detritivores and decomposers after the organism dies.