Organisms that make their own organic compounds from inorganic substances are called

A. animals.
B. animorphs.
C. heterotrophs.
D. autotrophs.


D. autotrophs.

Biology & Microbiology

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Prairie is another name for a  

A.  desert. B.  temperate grassland. C.  savanna. D.  taiga. E.  tundra.

Biology & Microbiology

Which tissue type produces melanin?

A. epithelial B. connective C. muscle D. nervous E. endocrine

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What type of cells are joined end-to-end, conduct water and are connected to each other with strips of wall material?

A. tracheids B. vessel members C. sieve cells D. sieve tube members E. companion cells

Biology & Microbiology

Which two phases of mitosis are essentially mirror images of each other?

Biology & Microbiology