The earliest known organism capable of sexual
reproduction is a type of
a. virus.
b. bacterium.
c. alga.
d. animal-like protist.
e. fungus.
C
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The abyssal zone is one of the zones of the pelagic division
Indicate whether the statement is true or false
Describe how the discovery of the structure of DNA is an example of the fact that science is a process that always builds on previous work. Text Section LO2 Key Concept: Watson and Crick, process of science, DNA structure Level: Application of concepts (maybe some advanced critical thinking)
What will be an ideal response?
Libbie Hyman's comprehensive study of invertebrates, beginning in the 1940s, was noteworthy for being one of the few major works at the time to ________
A) use Lamarckian evolution to explain the origins of animal phyla B) use cladistics to resolve invertebrate relationships C) integrate development with adult morphology to understand adaptation D) propose gene regulation as an explanation for development E) explain invertebrate evolution using "macromutations" with large effects
Ponds have pondweeds attached to the bottom, insect larvae that feed on the pondweeds, fish that eat the insects, and birds like great blue herons that eat the fish. In this ecosystem which of the following would have the largest total biomass (all individuals of the category)?
A. large fish B. small fish C. insects D. great blue herons