When have many deciduous plants adapted to drop their leaves?
A) when overwatered
B) during summer
C) during droughts
D) whenever daylight cycles shorten
C
Biology & Microbiology
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____ must have been the first eukaryotic cells
a. Archaea b. Bacteria c. Protists d. Fungi e. Microplants
Biology & Microbiology
Nutrient deficient aquatic ecosystems are called ________.
A. hypotrophic B. oligotrophic C. eutrophic D. autotrophic E. epitrophic
Biology & Microbiology
Parapatric speciation occurs most often ____.
A. within in the same home range B. populations inhabiting different areas while maintaining contact along a common border C. within a group of interbreeding populations D. on either side of geographic barriers E. by polyploidy
Biology & Microbiology
The response of plants to touch is known as
A. phototropism. B. thigmotropism. C. gravitropism. D. photoperiodism.
Biology & Microbiology