Which of the following parts of a brown alga do(es)
NOT have a counterpart in land plants?
a. blade
b. stipe
c. float
d. holdfast
e. all of these
Answer: c
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Which of the following best describes the anatomy of a coenocytic organism?
A. The body is made of a large cell with many nuclei. B. The body cells are organized into welldefined tissue layers. C. The body cells are organized into branching filaments. D. The body is made up of several different types of highly specialized cells. E. The body is a hollow ball of flagellated cells.
Purple flower (A) is dominant over white flower (a), and tall stem (B) is dominant over short stem (b). The Punnett square
represents a cross between two dihybrids (AaBb ? AaBb). In the figure above, how many plants would have purple flowers and tall stems?
a. 1 b. 3 c. 5 d. 9 e. 16
A research group claims that they have discovered microscopic fossilized embryos, including some at the blastula stage, but other researchers are skeptical. Finally, one student develops a technique for splitting the embryos in half to reveal the substructure. Cutting open the first blastocyst embryo, the student is very excited. “It is a blastula!" she shouts,"Look, you can see the ____________________ inside!”
A. granulosa cells B. hollow blastocoel C. archenteron D. neural tube Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about a blastula? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The organ of Corti is located in the
a. brain stem. b. inner ear. c. abdominal cavity. d. middle ear. e. semicircular canals.