Pronunciation: [tˈe͡ɪks ˌʌp ˈɒn] (IPA) 
The spelling of the phrase "takes up on" follows the rules of English phonetics. "Takes" is spelled with the /t/ consonant sound followed by the /eɪ/ diphthong, while "up" is spelled with the /ʌ/ vowel sound followed by the /p/ consonant sound. Lastly, "on" is spelled with the /ɒn/ vowel sound. Together, the phrase "takes up on" has a stress on the second syllable of "takes" and the first syllable of "up".
The phrase "takes up on" is a phrasal verb that can be broken down into two separate components: "takes up" and "on."
Firstly, "takes up" is an idiomatic expression that means to start doing or pursuing something, or to occupy or fill a certain amount of space or time. It implies that someone engages in an activity or endeavor, or devotes their attention or energy to something. For example, one might say, "She takes up painting as a hobby" or "He takes up a lot of space in the room."
Secondly, "on" is a preposition that indicates a point in time or space, as well as a direction or position. In this context, it suggests that someone is accepting or adopting a challenge, task, or responsibility. It can also convey offering assistance or support to someone. For instance, "She takes on a new project at work" or "He takes on the role of team captain."
Therefore, when combined, "takes up on" can mean to accept or embrace a challenge, task, or responsibility, or to offer help or support to someone. It implies actively engaging in a certain endeavor or accepting a task willingly. For example, "She takes up on the opportunity to lead the project" or "He takes up on his friend's request for assistance."
