1. pericycle | 2. medullary rays |
3. endodermis | 4. hypodermis |
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1. | cells that mature into secondary xylem towards pith and into secondary phloem towards periphery |
2. | cells that mature into secondary xylem towards periphery and into secondary phloem towards pith |
3. | cells that mature into primary xylem towards pith and into primary phloem towards periphery |
4. | cells that mature into primary xylem towards periphery and into primary phloem towards pith |
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I. | In secondary growth in dicot stems, the amount of secondary phloem produced is more than secondary xylem |
II. | The cambium is generally more active on the outer side than the inner |
1. | Both I and II are true and II explains I |
2. | Both I and II are true but II does not explain I |
3. | I is true but II is false |
4. | Both I and II are false |
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Match each item in Column I with one in Column II and select the correct answer from the codes given:
A. Spring [early] wood | a. Xylary elements with wider cavities |
B. Autumn [late] wood | b. Xylary elements with narrow vessels |
C. Heartwood | c. Central or innermost layers of secondary xylem |
D. Sapwood | d. Peripheral region of the secondary xylem |
A | B | C | D | |
1. | a | b | c | d |
2. | a | b | d | c |
3. | b | a | c | d |
4. | b | a | d | c |
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1. pith meristem | 2. cork cambium |
3. cortex cambium | 4. vascular cambium |