The specialized structure that stores pigments, water, inorganic ions and maintains turgor pressure is the
A. vacuole.
B. peroxisomes.
C. Golgi apparatus.
D. vesicles.
E. lysosomes.
Answer: A
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Gemmae function for
(a) sexual reproduction. (b) water retention. (c) anchorage of a liverwort thallus to the substrate. (d) asexual reproduction.
A botanist is studying the effects of different oomycete species on potato plants. He exposes one set of plants to an oomycete species having several avirulence (AVR) proteins
He exposes another set of plants to an oomycete species having a single AVR protein. What do you expect will be the results of his experiment? A. Mortality will be higher in plants exposed to the several-AVR oomycete species. B. Mortality will be higher in plants exposed to the single-AVR oomycete species. C. Mortality rates will be the same in both plant sets.
Which of the following is defined as genetic change in a population from generation to generation?
A. heredity B. phenotype C. evolution D. genotype E. mitosis
How is the carnivorous plant lifestyle suited for an existence in bogs?
A) Bogs contain many soil-based proteins, which are a good source of nitrogen. B) The lack of nitrogen in bogs selects for the carnivorous plant lifestyle of ingesting and digesting animals for nitrogen. C) Bogs are naturally high in nitrogen, which favors the carnivorous plant lifestyle. D) Bogs contain rich populations of nitrogen-fixing bacteria, which provide nitrogen to the plants.