____ are the major producers in the ocean food chain.
A. Benthic organisms
B. Phytoplankton
C. Fungi
D. Water molds
B. Phytoplankton
Biology & Microbiology
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Which of the following components is not associated with the primary cell wall?
A) cellulose microfibrils B) hemicelluloses C) pectins D) glycoproteins E) lignins
Biology & Microbiology
A parent has a genotype of RrYy. What is the probability of this individual producing a gamete with the RY genotype?
a. 1/2 b. 1/4 c. 3/4 d. 1/8 e. 0
Biology & Microbiology
In the ecosystems of the world, fungi act primarily as
A. primary consumers. B. producers. C. decomposers. D. detritovores. E. secondary consumers.
Biology & Microbiology
Flowering plants originated during the
A. Jurassic Period. B. Devonian Period. C. Permian Period. D. Cretaceous Period. E. Tertiary Period.
Biology & Microbiology