STD 12 - 5. molecular basis of inheritance — BIOLOGY STD 12 Science — Question

$i$. Birth control pills are likely to cause cardiovascular problem

$ii$. A woman who substitutes or takes the place of the real mother to nurse to embryo is called surrogate mother

$iii$. Numerous children have been produced by in vitro fertilisation but with some abnormalities

$iv$. Woman plays a key role in the continuity of the family and human species

$v$. Foetal sex determination test should not be banned

$R$ : It is the occurrence of horizontal zonation in the ecosystem.

$I.$ Cyanobacteria

$II.$ Yeast

$III.$ Symbiotic bacteria

$IV.$ Free living bacteria

Choose the correct option