Explanation

Herpetology is the scientific study of reptiles and amphibians.

It includes the study of their biology, behavior, ecology, and conservation.

Explanation

Dermatology:  Study of skin 

It involves the study of health conditions that may affect the skin, fat hair, nails, and membranes. 

Additional information:

Agrostology: Study of Grasses 

Agronomy: soil management and crop production 

Odontology: study of teeth 

Arthrology: Study of joints 

Nephrology: study of kidneys

Hematology: Study of blood  

Explanation

The scientific study of different aspects of plants is called botany

plant biology or phytology, is the science of plant life and a branch of biology.

Additional information:

study of soil is called  pedology

study of grasses is called agrostology

study of food is called bromatology

study of cells is called cytology

study of animals is called zoology

study of skin is called dermatology

study of insects is called entomology

study of eggs is called oology

study of earthquakes is called seismology

study of viruses is called virology

study of bacteria is called bacteriology

study of the heart is called cardiology 

study of fermentation is called zymology

Explanation

Zoology, branch of biology that studies the members of the animal kingdom and animal life in general.

Explanation

Oncology is a branch of medicine that deals with the study, treatment, diagnosis, and prevention of cancer.

A medical professional who practices oncology is an oncologist.

The name's etymological origin is the Greek word ὄγκος, meaning "tumor", "volume" or "mass".