LIFE SCIENCE

Detailed explanation-1: -The branch collar is the swollen area of trunk tissue that forms around the base of a branch. The branch bark ridge is a line of rough bark running from the branch-trunk crotch into the trunk bark, less prominent on some trees than on others.

Detailed explanation-2: -What is a branch collar? It is a bulbous area that is attached to the trunk or a bigger branch. This bulbous area or branch collar is collar tissue that is rich in energy reserves and chemicals that hinder tree decay and helps the tree create wound wood that seals up the wound.

Detailed explanation-3: -The branch collar contains a protective chemical zone that inhibits the movement of decay organisms from dead or dying branches into healthy tissues of the parent stem.