In which of these animals is a gastrovascular
cavity found?
a. flatworms
b. sea anemones
c. earthworms
d. monkeys
e. more than one of animals has a
gastrovascular cavity
E
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Members of the supergroup Amoebozoa are characterized by:
A. locomotion via pseudopodia B. hard shells composed of calcium carbonate C. plastids acquired through tertiary endosymbiosis D. alveoli beneath the plasma membrane E. the presence of a feeding groove
Atoms share electrons unequally in a(n)_____ bond
Fill in the blank(s) with correct word
Support for evolution has come from fossil evidence. All of the following statements about the fossil records are true except one. Choose the exception
a. Fossils found in adjacent rock layers are more similar to each other than those found in distant layers. b. Many organisms that lived previously were different from today's living organisms. c. All types of organisms have left a fossil record. d. Different organisms were present at different times in Earth's history. e. In general, simpler forms of organisms are found in older rocks; more complex forms in younger rocks.
The diffusion of water across a selectively permeable membrane is
A. facilitated diffusion. B. active transport. C. simple diffusion. D. osmosis. E. phagocytosis.