Meristem behind the root cap (pro-cambium, ground meristem are primary meristems).
Cell plate during cytokinesis.
Animal cells form cleavage furrow during cytokinesis.
Meiosis
Spermatogonia (2N) in the outer layer (large, dark) mitosis -> primary spermatocytes (2N) further into the lumen.
Meiosis I = secondary spermatocytes (smaller, lighter); meiosis II -> thin spermatids mature into motile sperm in lumen,
though probably do not see many sperm in a slide.
Oogonia enlarge into primary follicles which contain a primary oocyte (2N) enclosed by follicle cells.
Meiosis I -> secondary oocyte (1N, in a mature Graafian follicle) + polar body;
(Q#3 says primary, should be secondary; also says 3000K primary, 300 ovulated)
Theca cells secrete follicular fluid.
Meiosis II is not completed until the secondary oocyte is penetrated by a sperm;