1. Anatomy:- Study of internal structure of organism.

2. Agrology:- Soil science dealing specially with production of crop.
3. Agronomy:- Science of soil management and production of crop.
4. Agrostology:- Study of grass.
5. Arthrology:- Study of joints.

6. Apiculture:- Rearing of honey bee for honey.

7. Anthropology:- Study of origin, development and relationship between the culture of past and present human.
8. Anthology:- Study of flower and flowering plants.

9. Angiology:- Study of blood vascular system including arteries and veins.

10. Andrology :- Study of male reproductive organs.