Actinomycetes are usually found in ________ habitats.
A. freshwater
B. marine
C. medical
D. soil
Answer: D
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Fruits that develop from a flower with many separate ovaries are referred to as:
a. accessory fruits. b. aggregate fruits. c. dry fruits. d. multiple fruits. e. simple fruits
Sea cucumbers will ____ when environmental conditions deteriorate
a. eject their digestive tract, respiratory structures, and gonads b. crawl to an area with more favorable conditions c. form a resistant spore d. float to the surface and then later drop to a more favorable location e. crawl deep into the ocean mud on the bottom
In plant cells, ________ may contain organic nutrients, pigments, and poisons
A) mitochondria B) chloroplasts C) lysosomes D) central vacuoles
What kind of interaction occurs when two cardinals (birds of the same species) are trying to build a nest in the same tree?
a. intraspecific competition b. mutualism c. fundamental competition d. interspecific competition