Flower is a modified stem evidence

Flower is a modified stem evidence:

Evidences to confirm that flower is a modified shoot:

1. The place of flower buds and shoot buds is similar, that is, they are axillary or terminal in location.

2. In several plants, the flower buds are transformed into vegetative buds or bulbils, example: Agave, Onion, and so on.

3. In several plants, the thalamus lengthens to form a vegetative branch or another flower over the first flower, example: Rose.

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Figure: Evidences to confirm that flower is a modified shoot

4. In Nymphaea (that is, Water Lily), the flowers exhibit all transitional stages among a sepal and petal and among stamen and petal.

5. In Gynandropsis gynandra, thalamus lengthens and exhibits long internodes among the floral organs.

6. In rose, the sepals are identical in morphology to leaves.

7. In Degeneria, the stamens are prolonged similar to leaves and the carpels come out like folded leaves without distinguishing into style and stigma.

8. The anatomy of thalamus, pedicel and stem exhibit close similarities. The vascular supply of various floral appendages looks like the vascular supply of ordinary vegetative leaves.

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