Is philosophy a pseudo science

No. Pseudo-Science is a belief that's often has no facts to support it's truth. A good example of this is religion.

Why, the very Word pseudo means fake or false. Biology is hard facts, however, not just guesswork.

Something can reasonably be called pseudoscientific if it meets the following criteria:

1) It is presented as consistent with the accepted norms of scientific research, but

2) fails to meet these norms - most importantly - in use of the scientific method.