What are proglottids?

a. the anterior end of a tapeworm, which attaches to the host with suckers or hooks
b. enzyme molecules excreted by parasitic worms to digest the host’s tissues
c. a tapeworm segment containing an excretory system and reproductive structures
d. a pair of organs attached to the anterior of a worm that it uses to collect food


c. a tapeworm segment containing an excretory system and reproductive structures

Biology & Microbiology

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The __________ is the pelvic girdle, pectoral girdle, and paired limbs. Fill in the blank(s) with the appropriate word(s)

Biology & Microbiology

The degree of mental retardation in a Down syndrome fetus is predictable. Indicate whether the statement is true or false

Biology & Microbiology

Community A and Community B both have 54 beetle species, but Community A has more total individuals than Community B. If you were to calculate the Shannon diversity index for both communities, what would be the result?

A. Community A and B would have equal values for the Shannon index. B. Community B would have a higher Shannon index value. C. Community A would have a higher Shannon index value. D. Cannot predict the result based on this information.

Biology & Microbiology

Nitially, organisms were classified into only two kingdoms (by Darwin & Haeckel). The individual who developed the five-kingdom system, which is considered traditional today was

A) Carl Woese. B) Louis Pasteur. C) Stephen Hawking. D) Robert Whittaker.

Biology & Microbiology