44. Seeds for desert plants often germinate once abscisic acid is washed away from the seed by water. In this scenario, abscisic acid is acting as a/an (A) hormone that stimulates cell expansion. (B) germination-inhibiting compound. (C) suspensor. (D) hormone to induce the release of sugars from stored starch in the endosperm.

51. You are observing the embryonic development of a new species in your laboratory. This species has indeterminate development. You note a mutation in which one of the blastomeres (early cells) mutates and loses its function. What do you hypothesize would happen to this being? (A) Nothing—the remaining blastomeres would accommodate the formation of the necessary structures of the embryo. (B) Immediate embryo death—the remaining blastomeres could not accommodate the formation of the necessary structures of the embryo. (C) Uncertain future for the embryo—depending on which blastomere was lost, the remaining blastomeres might accommodate the formation of the necessary structures of the embryo. (D) The embryo would certainly lack some features as a result of the lost blastomere.

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