Turgor pressure is the result of:
A. the activity of the contractile vacuole.
B. water accumulation within a cell.
C. the rigidity of the plasma membrane.
D. All of the above answers are correct.
Answer Key: B
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Which of the following is not a form of energy?
a. heat b. diffusion c. sound d. light e. gamma radiation
In the life cycle of plants, what is the difference between a seed and a spore?
A. Seeds are diploid, and can grow directly into a gametophyte. B. Seeds are haploid, and can grow directly into a sporophyte. C. Seeds are diploid, and can grow directly into a sporophyte. D. Seeds are haploid, and can grow directly into a gametophyte. E. None of the answer choices is correct.
The evolution of similar body parts in different lineages is called
a. adaptation. b. morphological divergence. c. vestigial structures. d. morphological convergence. e. heterozygous structures.
Choose the true statement about the role of polyploidization in the evolution of plant genomes.
A. Crop plants rarely show evidence of polyploidization events. B. Genome downsizing following allopolyploidy usually affects the participating hybrids equally. C. Jumping of transposons is most common many generations after a polyploidization event. D. Genome downsizing following allopolyploidy results mainly from duplicate gene loss.