Which of the following statements about the cortex is true?
a. It secretes a protective layer of cutin.
b. It is at the core of the herbaceous eudicot stem.
c. It is filled with cork cells.
d. It translocates sugar by means of a pressure gradient.
e. It may contain collenchyma and sclerenchyma.
e
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The fossil record reveals that the structure of shoulder joints in birds, which is essential for flight, is an adaptation that
originated in ____.
a. nonflying birds b. ancient bats c. ancestral birds d. nonflying dinosaurs e. flying dinosaurs
The broad-sense heritability of a trait is estimated at 0.8. If the total phenotypic variance is estimated at 32.20, what is the genetic variance?
What will be an ideal response?
Most chemical digestion occurs in the:
a. stomach. b. ileum. c. jejunum. d. duodenum. e. colon.
The mechanism of action of RhoGAM is to (activate/neutralize/prevent) an anti-Rh immune response.
Fill in the blank(s) with the appropriate word(s).