Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 36, Problem 9TY
During its development, a tracheid elongates in a direction parallel to the shoot or root axis. Based on this information, what can you say about the orientation of cell-wall cellulose microfibrils and cytoplasmic microtubules in the developing tracheid?
a. The microfibrils will be oriented perpendicularly (at right angles) to the long axis of the developing tracheid, encircling it, but the cytoplasmic microtubules will be oriented parallel to the direction in which the tracheid is elongating.
b. Microfibrils and microtubules will both be oriented perpendicularly (at right angles) to the elongating axis of the tracheid.
c. Microfibrils and microtubules will both be oriented parallel to the direction of tracheid elongation.
d. Microfibrils will be oriented parallel to the direction of tracheid elongation, but microtubules will be perpendicular (at right angles) to both the microfibrils and the elongating tracheid.
e. None of the above is correct.
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The image below represents a flower meristem viewed from above. At the time the image represents, the cells are undifferentiated, although their eventual fates are determined (e.g. carpels, etc.). The rectangles
indicate the regions of the meristem where particular genes (A, B, and C) are expressed. Note that these genes are expressed all around the circumference of the meristem at the location indicated; in other words,
gene A is active in all cells in the rings labeled sepal and petals.
Interpret the figure by filling in the following table: I've numbered each row to help with writing the answer below.
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1.
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2.
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Chapter 36 Solutions
Biology
Ch. 36.1 - Prob. 1CSCh. 36.2 - Prob. 1CSCh. 36.2 - Prob. 1CCCh. 36.2 - Prob. 2CSCh. 36.2 - Prob. 3CSCh. 36.3 - Prob. 1CCCh. 36.3 - Prob. 1EQCh. 36.3 - CoreSKILL Why did Sack and colleagues splint...Ch. 36.3 - Prob. 3EQCh. 36.3 - Cactus leaves are so highly modified for defense...
Ch. 36.3 - Prob. 3CCCh. 36.4 - Prob. 1CCCh. 36 - Where would you look to find the gametophyte...Ch. 36 - What is a radicle? a. an embryonic leaf b. an...Ch. 36 - Prob. 3TYCh. 36 - Prob. 4TYCh. 36 - Prob. 5TYCh. 36 - Prob. 6TYCh. 36 - Prob. 7TYCh. 36 - Prob. 8TYCh. 36 - During its development, a tracheid elongates in a...Ch. 36 - What are examples of woody plants? a. trees b....Ch. 36 - Prob. 1CQCh. 36 - What would be the consequences if leaves were...Ch. 36 - Prob. 3CQCh. 36 - Prob. 1COQCh. 36 - Prob. 2COQ
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