Which is an innovation of gymnosperms?

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

what are the options? add them, then i will be glad to .

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time