Identify the main types of bivalves and describe how they differ in their life habits
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Included within the class Bivalvia are the mussels, oysters, clams, and scallops. Mussels and oysters tend to be sessile animals that filter feed on suspended phytoplankton. Clams are bivalves that live in sandy or muddy environments and move about using a hatchet-shaped foot. They feed by sucking in water through an incurrent siphon. Scallops are benthic epifauna and some free-living species swim by clapping their shells.
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Describe the major differences between bryophytes and vascular plants
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In a bacterial species, 20% of the bases in its DNA are C. What percent of the bases are G?
A) 80% B) 40% C) 20% D) 10%
The chemical 5-bromouracil mimics the chemical structure of thymine, making it a(n) (analog/nucleotide/precursor) of thymine.
Fill in the blank(s) with the appropriate word(s).
In the pulmonary circuit, pulmonary ____________________ carry oxygen poor blood to lungs and pulmonary ____________________ return oxygenated blood to the heart
Fill in the blank(s) with correct word