Question
Describe the modification of stem in:
- Chrysanthemum.
- Eichhornia.
- Jasmine.
✓
Answer
- In Chrysanthemum: the lateral branches arise from the basal and underground part of the main stem, grow horizontally below the soil and emerge obliquely above the soil to give rise to leafy shoots.
- In Eichhornia: the lateral branches of the stem have short internodes and each node bears a rosette of leaves and a tuft of roots.
- In Jasmine: a slender lateral branch arises from the base of the main stem, grows aerially/ erect for sometime and then arches downwards to touch the ground; the part buried under the soil produces adventitious roots and new shoots at the nodes.
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