Dystocia refers when a birth is difficult.
A describes a gymnosperm.
B describes any type of plant.
C is too vague to even describe a plant.
D (the correct answer) describes an angiosperm (flowering plant). After double fertilization, angiosperms form a fruit over the ovulary of the plant, where the seeds are located.
Compare: They both are products of DNA. They both are equally important to a living organism. Contrast: Genotype is the genetic makeup, while Phenotype is the physical appearance. Genotype can't be seen but phenotype can.
Pizza - The sun's energy helped make the pizza because the various ingredients required sunlight, either directly, or indirectly. For example, the cheese is made from cow's milk, and the cow's milk comes from a cow who eats grass (presumably), and the grass feeds off of the sun's energy through photosynthesis. Thus, the cheese is indirectly made with sunlight. Also, the grains used to create the flour used to make the dough used sunlight to grow. Finally, the tomato sauce is made from tomatoes, which are a plant that required sunlight to grow.
I only did one example, but I hope you can make another one with the information I provided yourself! Good luck. :)
