The genus Frankia
A. produces heat resistant endospores and is strictly a marine bacterium.
B. produces heat-resistant endospores.
C. grows in symbiotic association with the roots of some higher plants and fixes nitrogen.
D. is strictly a marine bacterium.
Answer: C
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A vascular bundle
A. contains xylem and phloem. B. is not found in leaves. C. is usually scattered in the stem of a eudicot. D. is on the outer surface of a root. E. is very distinct in the apical meristem.
Which of the following is a defining feature of vertebrate nervous system development?
a. Oraganogenesis b. Ectoderm develops into organs c. Ectoderm and endoderm develop into organs d. Ectoderm, endoderm and mesoderm develop into organs e. Neural crest
Gymnosperms
A. are usually insect pollinated. B. are found above the timberline on mountains. C. are seed-bearing plants. D. have flowers.
How is a stem cell different from a "normal" somatic cell? (Use a liver cell as an example.)
What will be an ideal response?