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Plants having little or no secondary growth are
Option: 1
Conifers
Option: 2
Deciduous angiosperms
Option: 3
Grasses
Option: 4
Cycads
Answers (1)
Secondary Growth -
- The growth that occurs along the main axis is called the primary growth. It occurs via the activity of the primary meristem.
- In most of the monocots and some herbaceous dicots, there is only primary growth.
- In the majority of angiosperms and gymnosperms, there is an increase in the girth of the stems and roots. Such growth in called the secondary growth.
- Secondary growth occurs through the activity of lateral meristem or secondary meristem.
- Secondary growth occurs in two patterns:
- Intrastellar secondary growth: It occurs through vascular cambium. It involves the formation of wood (secondary xylem) and secondary phloem.
- Extrastellar secondary growth: It occurs through the activity of cork cambium. It involves the formation of periderm.
A majority of the monocots do not show secondary growth.
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