Colonial animals called moss animals (due to their white encrustations or fuzzy growths) are:
a. phoronids.
b. bryozoans.
c. brachiopods.
d. anemones.
e. hydroids.
B
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Fungi and protists serve an important role in the anaerobic digestion of cellulose in ruminants
Indicate whether the statement is true or false.
A gene may have many alleles, but a person has only two alleles for a gene, because
A) having more than two alleles is always lethal. B) a gene can be altered in many ways, but a person has only two copies of any gene. C) a genotype is haploid because of meiosis. D) having more than two alleles unbalances the chromosomes.
Plastic marine debris was collected from multiple sites in the ocean and examined with electron microscopy and next-generation sequencing. These techniques revealed microbial communities growing on the plastics. Which of the following statements is correct regarding these communities?
A. These communities are very likely to be pure cultures, as plastics have been synthesized precisely because they are resistant to microbial degradation. B. There are no bacteriophage that use these microbes as hosts, as viruses are rare in marine ecosystems. C. The community within the plastic must be very similar to the community in the surrounding ocean waters. D. At least one member of the community must synthesize an enzyme to degrade the hydrocarbon comprising the plastic.
Four of the five structures listed below are
grasshopper mouthparts. Select the exception. a. proboscis b. maxilla c. palps d. mandible e. labrum