Question

Discuss cell surface transport under the following subheadings,
1.structure
( I) constituents
(Ii) microvilli
( iii )cillia and sperm tails
( iv) junctions

Answer 1

The sporophytes differentiate specialized reproductive "structures"called sporangia, which are dedicated to the production of spores as constituent particles.
But in human Gamete cell priduces "sperms"
which moves foreward with help of "microvilli" "cillia" and "sperm tail" and meet with egg at "junction"of ovary..

Answer 2

Cell surface transportation or membrane transport is defined as the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes, which are lipid bilayers that contain proteins embedded in the layers between them. The movement of the substance is via the transportation proteins which helps in the transportation of the substance in the layers of the cells.