Which of the following cells transport sugars over long distances?
A) parenchyma cells
B) collenchyma cells
C) sclerenchyma cells
D) tracheids and vessel elements
E) sieve-tube elements
Answer: E
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All of the following lack seed and have vascular tissue EXCEPT
A. Ferns. B. Horsetails (Equisetum). C. Ginkgo. D. Ground pines (Lycopodium).
A recent study of the marine hawksbill turtles' stomach contents revealed that sponges constitute a major portion of their diet. Sponge beds are generally protected from predators by their calcium and silica crystals, but these were found in the turtles' digestive systems. These protective structures are called
A. osculum. B. spicules. C. amoebocytes. D. spongin. E. choanocytes.
If you were an anglerfish, which of the following techniques would you use to capture your prey?
a. You would remain visible in dark water, then use the glowing lure on your head to attract the prey and finally expand your oral cavity and suck your prey. b. You would remain invisible in dark water, then use the glowing lure on your jaw to attract the prey and finally expand your oral cavity and suck your prey. c. You would remain invisible in dark water, then use the glowing lure on your head to attract the prey and finally expand your oral cavity and suck your prey. d. You would remain invisible in dark water, then use the glowing lure on your head to attract the prey and finally expand your whole body and suck your prey.
In what ways is sample size related to statistical testing?
A) By increasing sample size, one increases the reliability of the statistical test and decreases the likelihood of erroneous conclusions from chance fluctuations in the data. B) The larger the sample size is, the more likely you are to introduce errors into your data. C) By increasing sample size, one decreases the reliability of the statistical test and increases the likelihood of erroneous conclusions from chance fluctuations in the data. D) There is no correlation. E) By increasing sample size, one increases the reliability of the statistical test and increases the likelihood of erroneous conclusions from chance fluctuations in the data.