All living things need carbon. How does most carbon enter the living portion of an ecosystem?
A. Atmospheric CO2 taken in by photosynthesis
B. Elemental carbon taken in by plant roots
C. Elemental carbon taken in by plant leaves
D. Atmospheric CO2 taken in by soil bacteria
Answer: A
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A. carbohydrate B. protein C. DNA D. lipid
An animal cell placed in a hypertonic solution will swell and perhaps burst
Indicate whether the statement is true or false.
In order for pollination to occur the pollen must land on the ________
a. stigma b. petal c. fruit d. anther e. carpel
Movement of soluble organic material through sieve tube members occurs through ____
a. translocation b. active transport c. cohesion-tension d. transpiration e. facilitated transport