The only organisms that perform photosynthesis are ones that produce some form of
A) chlorophyll or bacteriochlorophyll.
B) carotenoids.
C) phycoerythrin.
D) phycocyanin.
Answer: A
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The ratio of net productivity at one trophic level to net productivity at the trophic level below it is known as:
1.Ecological efficiency 2.Harvesting efficiency 3.Assimilation efficiency 4.Production efficiency
________ or functional groups are groups of species in a community that are thought to have similar roles in the community
Fill in the blank(s) with correct word
An insect-pollinated plant would be likely to have
A. small flowers and no odor. B. large flowers and no odor. C. small flowers and a fragrant odor. D. showy petals and fragrant odor.
Which of the following is NOT a feature associated with filtration?
A) nitrocellulose or plastic membrane filters B) sterilization of heat-sensitive materials C) varying thicknesses of membrane filters used D) use of HEPA filters to filter air E) ability of some filters to trap viruses and proteins