Classify the following as either Sexual or Asexual Reproduction. Give the specific type if Asexual.

a) A small piece of a cactus breaks off the plant, falls to the ground, and begins to grow.

b) Pollen from a male poplar tree fertilizes sex cells on a female poplar tree.

c) Two earthworms each produce sperm and eggs and fertilize each other.

d) A flatworm is cut in half and grows into two flatworms.