what will be the odd mean out in this

ova , oviduct , sperm , spermduct

what is menstrutation cycle? explain in detail

 how does n embryo get norishment?????????????

 What happens when pollen grains of a plant travel from one flower to different flower on different plant of "DIFFERENT CATEGORY"?      

 why seed should not be planted deep in the soil?

what is a mullberry?

What is the difference between the carpel and the pistil in a flower?

 Give any three means of vegetative propogation.

 Please explain al the kingdoms Monerea ,protista ,anamallia , fungi, and plantae

 difference between stem cutting and grafting.

 what is a false fruit?

 what is pollination by elephant known as

 can u explain grating briefly. please

 hymen and clitoris in the female reproductive diagram and cowper's gland in male reproductive diagram should be added and labeled .for better understanding

 what is "EPIPETALOID" condition ????