Which cells provide flexible support to the growing parts of plants?
A) collenchyma cells
B) sieve-tube elements
C) sclerenchyma cells
D) parenchyma cells
Answer: A
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Which of the following is NOT dependent on the
others as a source of food? a. carnivores b. herbivores c. producers d. detritivores e. decomposers
The DNA molecule of a eukaryotic chromosome has a single replication origin.
a. true b. false
Methane can be produced from agricultural or industrial products by ________.
A. anaerobic respiration B. oxidation of nitrogen gas C. glycolysis D. fermentation
Which statement about decomposers is FALSE?
a. They act with detritivores to break down and recycle organic matter. b. They are microbial heterotrophs. c. They include bacteria but not fungi. d. They use the products of decomposition to supply themselves with energy. e. They are also called saprotrophs