Trace the development of a megagametophyte in the ovary to mature ovule.

Trace the development of microsporophyte in the anther to a mature pollen grain.

(a ) Trace the development of megaspore mother cell up to the formation of a mature embryo-sac in a flowering plant. (b) Draw a labelled diagram of the structure of mature dicot embryo.

When and where are primary oocytes formed in a human female ? Trace the development of these occytes till ovulation (in menstrual cycle). How do gonadotropins influence this developmental process ?

(a ) Trace the development ofmegaspore mother cell up to the formation of a mature embryo-sac in a flower ing plant. (b) Draw a labelled diagram of the structure of mature dicot embryo.

At which stage of the development, ovum is released from the ovary of human female?

(a) When and where does spermatogenesis in human male begin to take place? (b) With the help of schematic diagram, trace the development of mature spermatozoa in a human male.

Describe the formation of mature female gametophyte within an ovule in angioperms.

The arrangement of ovules within the ovary is known as

The fruit developed from the single ovary is said to be

Ovum released from ovary and is transported to the fallopian tube for fertilisation . Trace the correct path the egg and embryo takes from ovary to uterus .