Increase in oestrogen and progesterone ratio during pregnancy is helpful in
Parturition
Formation of mucus plug
Maintenance of pregnancy
Attachment of embryo with uterus

Drugs causing embryo malformations during pregnancy are called

During early pregnancy progesterone is secreted by

Progesterone pill helps in preventing pregnancy by not allowing

hCG, HPL and progesterone hormones are produced in women during pregnancy only

Hormone that prepares and maintains the uterus during pregnancy is produced by

Assertion (A) , The levels of hormones like oestrogens and progestrogens are increased during pregnancy. Reason (R) : In order to ensure proper foetal growth, the production of these hormones is crucial .