Eutrophication is the addition of ________ to an aquatic ecosystem.
a. nutrients
b. producers
c. water
d. None of these choices
e. oxygen
a
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Transferring Euglena into a dark environment results in the loss of photosynthetic pigment. What conclusion does this support?
A. Euglenoids are obligate photoautotrophs. B. Light triggers heterotrophy. C. Euglenoids are closely related to plants. D. Euglenoids are neither plant-like or animal-like protists. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about Euglena? How does it relate to the question? · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
At the present time, animals are responsible for _____ percent of the pollination of
angiosperms.
a. 10 b. 50 c. 75 d. 90
A root hair is an extension of an endodermal cell
____________________ Indicate whether the statement is true or false.
The sequence of subunits in the DNA "backbone" is
A) -phosphate-sugar-phosphate-sugar-phosphate-sugar-. B) -base-sugar-phosphate-base-sugar-phosphate-. C) -sugar-base-sugar-base-sugar-base-sugar-base-. D) -base-phosphate-sugar-base-phosphate-sugar-. E) -base-phosphate-base-phosphate-base-phosphate-.