In land plants, ________ transports water and minerals from the soil, and ________ transports food created from photosynthesis.
a. xylem; phloem
b. xylem; spores
c. phloem; xylem
d. phloem; gametes
a. xylem; phloem
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Which of the following statements in TRUE?
A. Many active genes are found in euchromatin, because proteins involved in transcription can easily access these regions of DNA. B. Euchromatin, found in interphase cells, is readily visible and easily viewed. C. A region of DNA is either heterochromatin or euchromatin, it cannot go back and forth between the two forms. D. When DNA is being replicated, the chromosomes are composed chiefly of heterochromatin. E. All choices are correct.
The frequency of antibiotic-resistant bacteria tends to go down when the bacterial population is no longer being exposed to the antibiotic
This implies that bacterial antibiotic resistance mechanisms have a significant ________ to the bacterial population. Fill in the blank(s) with correct word
The introduction of a foreign species into an area where it is not native is called:a
parasitization. b. infestation. c. fragmentation. d. biotic pollution. e. commercial harvest
Morphogenesis is characterized by
A. cells becoming specialized in structure and function. B. cell division and growth in size. C. body parts being shaped and patterned into a specific form. D. All of the choices are correct. E. None of the choices are correct.