Which of the following best compares the roles of the reproductive structures found in an angiosperm?
A)The male stamens hold the pollen, the female pistil holds the ovule, and the petals attract pollinators.
B)The female anthers holds the eggs, the male anthers contain pollen, and the petals provide nutrients for the growing embryo.
C)The male anthers hold the pollen tube, the female ovule holds the egg, and the petals grow around the seed to form a fruit.
D)The female stamens hold the ovules, the male pistil forms the pollen tube, and the petals provide nectar to pollinators.

A) The male stamens hold the pollen, the female pistil holds the ovule, and the petals attract pollinators.

Stamens (male reproductive parts of a flower) collectively forms the male reproductive organ (androecium) in a flower whereas pistil (the female reproductive part of a flower) forms the female reproductive organ called gynoecium.

Stamen consists two parts that are anther (that produces pollens, male reproductive cells) and a stalk like structure called filament, which supports/ holds pollen producing anther.
The female pistil holds the ovule that is enclosed by ovary in flowering plants (angiosperms) and the petals in a flower attract pollinators.

Thus, option A) is the right answer.

The answer to this will be from your lab notes/procedure. it would be best to ask another student who participated in the lab as we do not know what was done, what enzyme or if the temperature is celsius or fahrenheit. if i were to guess though i'd say the rate stopped due to enzyme denturing at high temperature

B. absorbs violet lightto get absorb sunlight for photosyntesis