Differentiate between annual, biennial, and perennial plants
What will be an ideal response?
Annual plants have a life cycle that spans one year, or one growing season. Their growth is indeterminate. Biennials have a two-year life cycle, flowers are produced the second year. Perennials live for many years, and typically produce flowers during many years of their life span. Perennials include both herbaceous and woody plants.
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The area in which there is a spark discharge in the accompanying figure represents ____
a. sunlight energy in the environment. b. heat energy in the environment. c. electrical energy in the environment. d. ionizing radiation in the environment. e. the explosion of the hydrogen gas to release energy for the reactions.
Endocarditis is often a consequence of bacteria attached to the heart valves. These microbes are not eliminated by circulating lymphocytes because
A. lymphocytes do not circulate through the heart valves to detect the presence of microbes. B. Gram-positive microbes don't have an exotoxin surface molecule to trigger an immune response. C. these microbes become covered in platelets and fibrin which is not recognized as foreign by the immune system. D. lymphocytes cannot engulf microbes attached to tissue.
What modified plant part would include a white potato as an example?
A) stem B) root C) leaf D) flower
Of the following, the social trend that would cause the fastest population increase is ________
A) more older men getting married B) decreasing age of first pregnancy C) lower nutritional values D) declining fecundity