1) (1 pt) Which is an inaccurate description of a feature of cytoplasmic determinants?
a) These are proteins, made in the cytoplasm and secreted out of cells, that influence
the developmental fate of surrounding cells.
b) Many are contributed from maternal cells and help to direct early stages of
They often playa major role in the first few mitotic divisions.
d) These are often formed after the completion of fertilization.
e) Typically they are unevenly distributed in the cytoplasm of the zygote.
2) (1 pt) Which of the following is a correct order of items that a growing pollen tube will
encounter on its way to an angiosperm female gametophyte?
a) carpel, pistil, ovary, ovule, megagametophyte
stigma, style, ovarian wall, integuments, megagametophyte
stigma, filament, anther, pistil, megagametophyte, integuments
d) ovarian wall, style, stigma, ovule, megagametophyte
e) style, ovary, stigma, integuments, megagametophyte
3) (1 pt) Natural selection is based on all of the following
a) variation exists within populations.