For 10 points, name these embryos that pierce their hard outer coat to germinate and become plants.
These structures contain large numbers of glyoxysomes to produce carbohydrates in the absence of photosynthesis. Phytochromes were discovered in these structures. They're not leaves or buds, but these structures are kept "dormant" by high abscisic acid levels, which drop after a surge in gibberellins. The setting in which these structures form differentiates (*) gymnosperms from angiosperms. These structures contain endosperm and a cotyledon or two. They're formed when an ovule meets some pollen. For 10 points, name these embryos that pierce their hard outer coat to germinate and become plants.
These structures contain large numbers of glyoxysomes to produce carbohydrates in the absence of photosynthesis.
seeds [prompt on embryos; prompt on fruit] &lt;JR&gt;