Which of the following is a similarity between plant and animal development?
A. Cell migration occurs during both plant and animal development.
B. Both plant and animal development rely on morphogens deposited in the oocyte.
C. The developmental patterns of both plants and animals rely on transcription factors.
D. Both plants and animals have numerous somatic cells that are totipotent.
E. Both plant and animal development use a group of homeotic genes called MADS box genes.
C. The developmental patterns of both plants and animals rely on transcription factors.
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The process illustrated in Figure 5-2 would most likely be used to transport:a
glucose. b. hormones. c. potassium ions. d. carbon dioxide. e. bacteria.
Which one of the following statements about transport of nutrients in phloem is false?
a) Differences in osmotic concentration at the source and sink cause a hydrostatic pressure gradient to be formed. b) Companion cells control the rate and direction of movement of phloem sap. c) A sink may be located anywhere in the plant. d) A sink is that part of the plant where a particular solute is consumed or stored. e) Solute particles can be actively transported into phloem at the source.
A hedgehog has 90 chromosomes in their diploid cells. At the end of meiosis II how many chromosomes and sister chromatid are present in each daughter cell?
A. 45 Chromosomes, 0 Chromatids B. 90 Chromosomes, 90 Chromatids C. 45 Chromosomes, 45 Chromatids D. 90 Chromosomes, 0 Chromatids
Which structure is exclusively reptilian?
a. A b. B c. C d. D e. none of these