Synergids have special cellular thickening at micropylar tip. Write the name and function of this structure

" The synergids have special cellular thicknings at the micropylar tip called "

A: filiform apparauts guides the pollen tube into the synergids R: It is special cellular thickening at microplylar tip to secrete chemotorpic stimulus

Write the IUPAC names of the following structures?

Write IUPAC names of the following structures

Find one word for the The following statements and choose the correct option. (i) Residual, persistent nucellus in seed -A (ii) Microspores arranged in a cluster of four cells - B (iii) Special cellular thickening at the micropylar end of emrbyo sac - C (iv) Development of seeds without fertilization - D

Special cellular thickenings are observed at the micropylar end of the synergids. Identify the option which correctly identifies these structures and their function.