Assertion : IgM is a type of immunoglobulin which cannot cross the placenta
Reason : IgM is a pentamer immunoglobulin jointed by I-chain

Name the Immunoglobulin which can cross placenta to reach the foetus

Which one of the following immunoglobulins is found as pentamer?

Assertion : In vulcanisation of rubber , sulphur cross links are introduced. Reason : Vulcanisation is a free radical intiated chain reaction.

Assertion : In vulcanisation of rubber , sulphur cross links are introduced. Reason : Vulcanisation is a free radical intiated chain reaction.

Which character has been incorrectly matched w.r.t type of immunoglobulin listed?

Which character has been incorrectly matched w.r.t type of immunoglobulin listed?

ASSERTION TYPE QUESTIONS : These questions consist of two statements each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is correct explanation of Assertion. B. If both Assertion and Reason are true but Reason is not correct explanation of Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. . Assertion : Protandry is a condition in which anthers mature earlier than stigma. Reason : Cleistogamous flowers are bisexual and never open.