Nitrogen is a __________ in plants.
Fill in the blank(s) with the appropriate word(s).
Answer: macronutrient
Biology & Microbiology
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Most of the water exiting from a leaf comes most
directly from a. upper epidermal cells. b. lower epidermal cells. c. mesophyll cells. d. xylem tissue. e. phloem cells.
Biology & Microbiology
The letter “D” from the above figure represents
a. ectoderm. b. endoderm. c. mesoderm. d. neural plate. e. all of these.
Biology & Microbiology
Transfer of random pieces of DNA mediated by phage is known as
A. transformation of competent cells. B. generalized transduction. C. conjugation. D. transposition. E. specialized transduction.
Biology & Microbiology
Which of these is a vitamin A precursor?
a. cobalamin b. pyridoxine c. plasmid d. beta-carotene e. thiamin
Biology & Microbiology