Question

Do all angiosperms and gymnosperms show secondary growth?

Answer 1

Answer:

here is ur answer

Explananation:

angiosperms -While secondary vascular tissues are truly lacking in some angiosperm taxa, many angiosperms  do in fact undergo secondary growth, which may be limited to vascular bundles or develop from a continuous cambium, or occur only in the root.

gymnosperms-Secondary growth occurs in most seed plants, but monocots usually lack secondary growth. If they do have secondary growth, it differs from the typical pattern of other seed plants. The formation of secondary vascular tissues from the cambium is a characteristic feature of dicotyledons and gymnosperms.

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Answer 2

Stem secondary growth is due to the activity of the vascular cambium meristem and cork meristem. ... Secondary growth is a feature of gymnosperms and most dicot plants (dicot woody plants). Only a few monocot plants show secondary growth and none pteridophytes (ferns and the likes).