Beans, peaches, and potatoes are all vascular plants. What do these plants have in common?
a. Their seeds do not have cotyledons.
b. They do not have vascular tissue.
c. Their seeds are not protected by fruit.
d. They bear flowers and seeds.

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.