The first tetrapods evolved ____
a. on land
b. after the amphibians
c. in water
d. after the first amniotes
e. from the ray-finned fishes
ANSWER: c
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Which of the following statements is true regarding the vascular cambia of ancient (extinct) lycophytes? Select all correct choices
A. Ancient lycophytes did not possess vascular cambia. B. Ancient lycophytes had vascular cambia that formed only secondary phloem. C. Ancient lycophytes had vascular cambia that formed only secondary xylem. D. Ancient lycophytes had vascular cambia that formed both secondary xylem and secondary phloem.
Which of the following is NOT an example of negative feedback control of homeostasis?
a. childbirth. b. blood pH regulation. c. regulation of heart rate. d. temperature regulation. e. blood oxygen regulation.
The organism shown above is using which of the
following types of reproduction? a. asexual budding b. sexual production of eggs c. hermaphroditic co-fertilization d. a combination of all three e. none of these
Which of these terms applies best to all material in this tissue that is not cellular?
A.) Interstitial fluid B.) Extracellular matrix C.) Mesenchyme D.) Ground substance