Irregular galaxies<span> get their odd shapes in many ways.
One way </span>irregular galaxies <span>are </span>formed<span> is when </span>galaxies collide/come close to one another, and their gravitational forces interact.<span> Some </span>irregular galaxies<span> were once spiral or elliptical </span>galaxies<span> but were deformed by these uneven external gravitational force.
</span><span>Another source of </span>irregular galaxies<span> may be very young </span>galaxies that have not yet reached a symmetrical state.
Hope that helps
Angiosperms are literally known as "flowering plants" and include all the flowering plants. Gymnosperms are seed-producing plants, such as trees that don't have flowers. So that leaves you with ferns and horsetails. Ferns have spores on them that they use to reproduce with, and they do not have flowers.