Lesson hub

Can't find the answer? Try online tutoring

How it Works

We have the UK’s best selection of online tutors, when and for how long you need them.

Getting 1-on-1 support is cheaper than you might think.

Participating users

Welcome to our free-to-use Q&A hub, where students post questions and get help from other students and tutors.

Follow the trail of responses and if you have anything to add please sign up or sign in.

You can ask your own question or look at similar Biology questions.

Hi Kay2000, 

The main modification of poison ivy is to secrete oleoresin which contains pentadecylcatechols, which collectively are known as urushiol. 

Urushiol, in the oleoresin causes contact dermatitis in most mammals, blistering the skin and causing inflammation (often seen as a rash), it is particularly potent in the eyes and muscosal tissues. Therefore if consumed it can lead to severe poisoning and even death. 

Similar occurences are known in some squash leaves, but usually far less potent. 

Any questions let me know.

Tom

Footer Graphic