You and your biology lab class take a field trip to a marine aquarium. Your guide is a marine biologist who studies squids. She explains to your class how squids are able to blend into their environment. She points out that squids have pouches of pigments embedded in their epithelium. The pouches are called  

A.  trochophores.
B.  spermatophores.
C.  lophophores.
D.  chromatophores.
E.  phytophores.


D.  chromatophores.

Biology & Microbiology

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Which term refers to the specialized male gametophyte of seed plants, such as gymnosperms?

a. pollen grain b. strobilus c. sporopollenin d. ovule

Biology & Microbiology

An example of microbial ________ is the ability of Vampirococcus to attach to the outer membrane of its prey and then secrete degradative enzymes that result in the release of the prey's cytoplasmic contents.

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

Biology & Microbiology

Bacterial shape is determined by

a. tubulin and actin b. cell membrane c. cytoskeleton d. s-layers e. outer membrane

Biology & Microbiology

All of the following are important bunyavirus diseases, except

A) Korean hemorrhagic fever B) Severe acute respiratory syndrome (SARS) C) California encephalitis D) Rift Valley fever E) Hantavirus

Biology & Microbiology