Differentiate between the following

Differentiate between the following:
(a) Placenta and uterus
(b) Unisexual and bisexual flowers
© Fertilization and germination

(a) Placenta:
The embryo gets nutrition from the mother’s blood with the help of a special tissue called placenta.
After fertilization, embryo gets attached to the walls of uterus.
(b) Unisexual flowers:
Flowers which contain either stamens or carpels.
Bisexual flowers:
Flowers which contain both stamens and carpels.
© Fertilization:
The fusion of male gamete with female gamete leading to the formation of zygote is known as fertilization.
The growth of embryo (present in the seed) into seedling under appropriate conditions is known as germination.