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During the secondary growth in a dicotyl...


During the secondary growth in a dicotyledonous stem, the fusiform initials of vascular cambium give rise to which of the given labelled part?

A

P

B

R

C

Q

D

both a and b

Text Solution

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The correct Answer is:
D
During secondary drowth in a dicot stem, intrafascicular combium and interfascicular cambium get connected to form a complete ring of vascular cambium. The cells of this vascular cambium are of two types, elongated spindle-shaped fusiform initials and shorter isodiametric ray initials. Ray initials give rise to vascular rays or secondary medu8llary rays. Fusiform initials divide to form seconodary phloem on the outer side and secondary xylem on the inner side.
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NCERT FINGERTIPS-ANATOMY OF FLOWERING PLANTS-Anatomy Of Flowering Plants
  1. In dicot stems, cambium present between primary xylem and primary phoe...

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  2. In a mature dicot stem which has undergone seconday growth, youngest l...

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  3. During the secondary growth in a dicotyledonous stem, the fusiform ini...

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  4. Which of the following statements is correct about a woody dicot stem ...

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  5. Identify P,QltRltS and T in the given T.S. of dicot stem showing secon...

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  6. As comprared to spring wood, automn wood has

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  7. In temperate regions, cambium is less active during winter season and ...

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  8. In temperate regions, during spring season, combium is very active and...

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  9. Read the following statementsand selectthe correct option Statement-...

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  10. In old trees, central dark coloured, non-conducting part of secondary ...

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  11. Which of the following statements are correct about heartwood? (i). ...

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  12. Study carefully the following statements and select the incorrect one(...

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  13. Match column I with column II and select the correct option from the g...

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  14. The terms 'wood' and 'bast' respectively refer to

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  15. Which of the following options carrectly shows the sequence of differe...

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  16. Phellogen cuts off derivatives on the inner side to form and on the ou...

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  17. Cork is impervious to water due to the presence of in its cell wall.

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  18. Bark does not include

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  19. The collective term used for phelloderm (secondary cortex), cork cambi...

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  20. Bark dormed early in the season is called as bark and bark formed towa...

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