I was doing an Earth Day Quiz on Google Search Engine and went across that option under "What do you look for in a partner?"
I want to know: What does “A complex system of glands” mean?
I think that the quiz is asking you to match how you find a partner with how different animals attract a mate. For example, Peacocks attract peahens with their brightly colored feathers. If you tend to be initially attracted to someone because of how they look or their style of dress, this would be what you would choose.
I think "a complex system of glands" is a reference to animals that release pheromones. If you tend to be initially attracted to someone because of "chemistry" once you get close to them, you would choose a complex system of glands".
So glands are organs in the human body, we have a lot of them and they're connected in a pretty complex way.
So when you say "I'm looking for someone with a complex system of glands", it's like saying "I'm looking for someone with two lungs and a stomach", you're saying you have no standards and will date anybody.
I think this is pertaining to a person with a unique personality. Knowing "complex" by definition, it would connotes to complicated, someone/something that is hard to understand and that there should be some chemistry to between them to get along. I, also wanted to know what it really means. I came across with this in Google. Kinda bad, it was not described in a simpler way.
Glands are there to produce hormones (either happy or angry or sad). "Complex system of glands" probably means he/she has mood swings and/or is hard to predict.
Glandular system = system comprised of glands
The adjective, glandular, can be turned into an of-phrase, where the noun form of the adjective is used:
System of glands = system comprised of glands