Which Helminth group contains members without a digestive system?

A) Phylum Nematoda
B) Phylum Cestoda
C) Class Cestoda
D) Phylum Trematoda


C) Class Cestoda

Biology & Microbiology

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Cyanobacteria capable of fixing atmospheric N2 always produce heterocysts.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Examine the flux diagrams in Figure 25.6 to address the following questions. What is the difference in the rate of carbon exchange (in gigatons per year of carbon) between photosynthesis and respiration in the marine environment?

What will be an ideal response?

Biology & Microbiology

If you were using cladistics to construct a phylogeny of canines, which of the following would be the most useful outgroup?

a. Leopard b. Domestic dog c. Coyote d. Wolf e. Crocodile

Biology & Microbiology

Which one of the following does NOT apply to RNA? 

A. It is a single strand. B. It contains the base uracil. C. The sugar is deoxyribose. D. It is involved in translation and transcription.

Biology & Microbiology