Oak trees and many other plant species have years in which they have synchronous production of many progeny by all individuals in a population. This is known as
A. sympatry.
B. crypsis.
C. armorment.
D. masting.
E. None of the choices are correct.
D. masting.
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Which of the following is/are a habitat island?
A. a freshwater pond in a meadow B. a black basalt lava flow in the middle of the desert C. an individual cluster of pines in the middle of a pine forest D. a freshwater pond in a meadow and a black basalt lava flow in the middle of the desert E. a freshwater pond in a meadow, a black basalt lava flow in the middle of the desert, and an individual cluster of pines in the middle of a pine forest
Autotrophs that utilize light as their energy source are
A) chemosynthetic autotrophs. B) photoautotrophs. C) fungi. D) heterotrophs.
Which of the following organisms are unable to photosynthesize?
a) Cyanobacteria b) Euglena c) Diatoms d) Foraminifera e) Dinoflagellates
All of the following are either structures or characteristics of members of the Class Bivalvia of the Phylum Mollusca except
A. a radula. B. a shell. C. gills. D. open circulation. E. the mantle.