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

Biology & Microbiology

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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

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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?

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Most chemical digestion occurs in the:

a. stomach. b. ileum. c. jejunum. d. duodenum. e. colon.

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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).

Biology & Microbiology