The motile feeding stage of protozoa is called the
A) Sporozoite
B) Food vacuole
C) Cyst
D) Trophozoite
E) Oocyst
D) Trophozoite
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Compare the first forms of photosynthesis to evolve with the form used by green plants today
What will be an ideal response?
An hypothesis currently getting a lot of
attention concerning the origin of biological molecules is that they originated a. in hot springs. b. near volcanoes. c. near hydrothermal oceanic vents. d. in salt lakes. e. in tidal pools.
_____ are angiosperms.
A. Fiddlehead ferns B. Sphagnum mosses C. Fir trees D. Roses
Bottlenose dolphins breathe air but can sleep in the ocean because _____
A) they sleep for only thirty minutes at a time, which is the maximum interval they can cease breathing B) they fill their swim bladder with air to keep their blowholes above the surface of the water while they sleep C) they move to shallow water to sleep, so they do not need to swim to keep their blowholes above the surface of the water D) they alternate which half of their brain is asleep and which half is awake