STD 11 - 14. Breathing and exchange in gases — NEET STD 11 Science — Question

Example of divergent evolution

Assertion: Atrial natriuretic factor (ANF) decreases blood pressure.
Reason: When blood pressure is increased, ANF is secreted which causes dilation of the blood vessels.

Antibodies are produced by

Give below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : In human beings, insulin is synthesized as a pro-hormone which needs to be processed before it becomes fully mature and functional.
Reason (R) : The extra stretch of C-peptide is to be removed from A-peptide and B-peptide chain of insulin.
In the light of the above statements, Choose the most appropriate answer from the option given below :

The maximum volume of air a person can breathe in after a forced expiration is known as

Cholera, leprosy and diptheria are

Ovulation do not occur in lactational period because of

The theory of evolution indicates that

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The beginning of diplotene is recognised by the dissolution of the synaptonemal complex and formation of X shaped structures called chiasmata
Reason(R): In oocytes of some vertebrates, diplotene can last for months or years.
In the light of the above statements, choose the correct answer from the options given below: