Answer:
Plaque builds up in the artery and makes it hard for blood to flow through, causing less and less blood to flow to the heart, as well as blood clots. The heart muscles become deprived of oxygen.
Explanation:
Answer:A
female gametophyte that has developed within a sporangium that has dispersed with the aid of additional protective sporophyte tissue layers
Explanation: An Ovule is made up of three parts: The integument, forming its outer layer, the nucellus (or remnant of the megasporangium), and the female gametophyte (formed from a haploid megaspore) in its center.
It is the structure that gives rise to and contains the female reproductive cells in seed plants.