What type of front forms when the surface position of the front does not move

A stationary front occurs.

There are two types of fronts, stationary and occluded fronts.

Stationary means fixed, and given that, the most logical answer to your answer is STATIONARY FRONTS knowing that the front mentioned in your question doesn't move.

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answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.