Which adaptation is a key characteristic of annelids that greatly increases their flexibility and mobility?

A) complete digestive tract
B) exoskeleton
C) segmentation
D) three true tissue layers


Ans: C) segmentation

Biology & Microbiology

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Ribotyping

A) bypasses sequencing and sequence alignments. B) exploits unique DNA restriction patterns. C) allows discrimination between species and different strains of a species. D) bypasses sequencing and sequence alignments, exploits unique DNA restriction patterns, and allows discrimination between species and different strains of a species.

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M. xanthus has an alternate motility type, known as ________ motility, because it is exhibited by single cells that leave the group, perhaps scouting for prey and requires a multiprotein motility "machine."

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Four of the five answers listed below are stages of actual nuclear division. Select the exception

a. anaphase b. prophase c. interphase d. telophase e. metaphase

Biology & Microbiology

The grasshopper is a terrestrial animal that uses its ________ in respiration.

A. parapodia B. tracheae C. gills D. body surface E. lungs

Biology & Microbiology