Question

Give the possible genotypes and ploidy of the reproductive parts listed below if a pine tree with female megasporophylls have a genotype "aa" is cross pollinated by a male plant with cones which have microsporophylls with a genotype "Aa". These plants are usually dioecious.

microspore mother cell -

megaspore-

cells of cotyledon from resulting embryo after fertilization-

cells of the integument-

archegonia cells -

pollen grain cells-

sperm-

seed coat -

megagametophyte -

ovule and integuments-

Do these plants exhibit double fertilization?

Do these plants produce a fruit?

Do these plants have an ovary?