Hey,

Botany, often known as plant biology or plant science, is the scientific study of plants. It's one of the most important fields of biology, and it's concerned with the study and investigation of plant life.

The study of animal life is referred to as zoology or animal biology. Similarly to botany, zoology is one of the most important areas of biology, with its own set of sub-branches.

Both these fields are different from one another. As you have to perform research, write synopsis, and then, you need to decide which subject you want to opt for. Both of these subjects are equally good. You just need to discover your interest as choosing any course vaguely will result in further problems.

Hello there!
Both are good subjects and give ample amount of scope for phd and further study.
For Ph.d and all choose the course that you find fun in learning be it Botany or Zoology.
Both are tough when it comes to everyday learning. With various advancements in the course structure and subjects each day, it has not only become a good source of further learning but also good scope of phd  as well.
So choose wisely.
Good Luck!