Asymmetric cell division in plants is best exemplified by:
Pick C: First mitotic division of microspore. Thinking through PSS- Sec-F-Transport step by step rules out the lookalikes and leaves First mitotic division of microspore. Skip these: A) Formation of guard cells; B) Division in root elongation zone; D) Division of megaspore. For hormones and genes, match the molecule or gene to its real role, not a neighboring pathway.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.